VMware Horizon 8 2306 | 6 JUL 2023

Check for additions and updates to these release notes.

With VMware Horizon 8, IT departments can run remote desktops and applications in the data center and deliver these desktops and applications to employees. End users gain a familiar, personalized environment that they can access from any number of devices anywhere throughout the enterprise or from home. Administrators gain centralized control, efficiency, and security by having desktop data in the data center.

NOTE: There is a known issue with Cloud Pod Architecture working for federations containing mixed Horizon 8 versions after upgrading at least one pod to Horizon 8 2306. The issue applies only when pods remain at mixed versions. For more details, see KB 96153.

What's New

VMware Horizon 8 version 2306 includes the following new features and enhancements.

IMPORTANT: Horizon 8 2306 is not supported with vSphere 6.5 or vSphere 6.7, which are both past the end of General Support.  Horizon 8 2306 Instant Clones are incompatible with vSphere 6.5 and vSphere 6.7 so you must upgrade to vSphere 7.0 or later before upgrading to Horizon 8 2306 if you are using Instant Clones.

WARNING: This Microsoft security update (KB5014754) will impact customers using certificate-based authentication such as smartcards. If you have applied this update to your Windows OS and if you have not mapped certificates to one of the strong mapping types described in the Microsoft KB, then users will be denied authentication when the full enforcement mode is activated by Microsoft, currently planned for November 2025. To address this issue the Horizon 8 2306 release allows administrators to configure certificate mappings to one of the strong types from the Horizon console. If you are using certificate-based authentication, then we recommend that you upgrade to this release to configure certificate mappings. See VMware KB 91595 for details.

  • Horizon Console

    • Horizon 8 includes a new role called Horizon Cloud Service that provides a limited set of privileges to administrators to activate subscription licenses and monitor Horizon 8 components from the Cloud Control Plane via the Edge Gateway service.

    • You can configure global agent restriction settings to prevent users from connecting to certain Windows agent versions and also provide an appropriate warning message to users.

    • Administrators can configure certificate mappings from the Horizon console. This addresses the impact of Microsoft security update (KB5014754—Certificate-based authentication changes on Windows domain controllers) on customers using Certificate-Based Authentication such as Smart Cards. See VMware KB 91595 for details.

    • After the Horizon 8 license expires and the 30-day grace period is over, end users can continue to work with existing desktops, remote applications, and virtual machines. Administrators will be unable to add new pools or farms, expand existing pools and farms, or schedule/reschedule a new push image for desktops and farms.

    • You can now hide the license subscription banner in Horizon Console though the expiry notice and warnings will still be displayed.

  • Virtual Desktops and Applications

    • Support for hardware-accelerated AV1 encoding has been extended to NVIDIA GPUs.

    • Instant clone smart provisioning now defaults to Mode B (clones created without Parent VMs). Mode A is selected only when using a vTPM device on ESXi hosts with versions older than 7.0 update 3f. Administrators can still set the provisioning mode by setting pae-ProvisionScheme attribute in ADAM database as described in KB 81026.

    • If you are using a vVol-enabled platform for full clones, then instant clones can co-exist on the same platform without any concerns. Instant clone workflows are not impacted in any way on a vVol-enabled platform. 

    • For customers who are using persistent disks with dedicated linked clones in Horizon 7.x, the persistent disk feature is now available with dedicated instant clones. Persistent disks are used to preserve user profiles when the instant clones are refreshed. Refer to this migration guidance KB 93091 on how you can move your persistent disks from your Horizon 7.x environment to Horizon 8.

    • Instant clone provisioning will check for available memory in addition to vGPU capacity when provisioning vGPU-enabled virtual machines. Earlier, only availability of vGPU was considered when placing instant clone VMs on hosts. This resulted in insufficient resources error when memory resources on a particular host were exhausted even though other hosts in the cluster had enough memory. This feature can be enabled by setting the pae-HostRamThresholdForVgpuPool value in ADAM database. See KB 93092 for details.

    • Administrators can now enable Instant Clone debug mode from Horizon console instead of by setting Configuration Parameters in the vCenter. With debug mode, administrators can analyze failed internal virtual machines before these virtual machines are deleted. This feature will also display the path of the internal virtual machines making it easier to locate them in vCenter and troubleshoot errors.

  • Horizon Connection Server

    • Horizon 8 no longer supports Microsoft Systems Center Operations Manager for monitoring Connection Server.

    • When using Cloud Pod Architecture, administrators can now configure Global Entitlements to distribute session load across available resources based on their current utilization. For more information, see Cloud Pod Architecture in Horizon 8.

    • A Horizon administrator can configure a timeout after which Single Sign-On (SSO) credentials will be discarded. This can be configured to affect internal and/or external connections. When SSO credentials are discarded after the timeout, Desktop and Application sessions will remain open and connected. Launching a new Desktop or a new application from a different RDS Farm will require authentication directly to the Windows Guest Operating System.  See Horizon Administration for details.

    • You can set the Connection Server enforcement state from clients with the same or a higher certificate checking mode. Horizon Clients 2306 and higher support this setting.

    • Security configuration setting balancedHost can now accept a list for those with more than one load balancer. The syntax is exactly the same as portalHost.

    • This release of Horizon Connection Server includes Apache Tomcat 8.5.89.

  • Horizon Agent for Windows

    • The Horizon Agent Installer has a checkbox to automatically restart the system on successful completion.

    • This release adds HEVC 4:4:4 support for Intel HW Encoding.

    • Horizon now supports Windows 11 as a Guest OS when running on VMware Cloud on AWS.

    • This release has added the FIDO2 Redirection feature for Windows Client and Agent, which enables users to take advantage of local endpoint FIDO2 components in the remote desktop or remote application. New GPO settings for this feature are Allow FIDO2 Authenticator Access which determines whether applications in remote desktops can access the endpoint's FIDO2 authenticators and FIDO2 Allow List which allows you to specify applications that can access endpoint's FIDO2 authenticators.

    • The group policy Block Thumbnail Representation When Minimized determines whether hovering over the thumbnail of a remote desktop will show remote desktop content when its window is minimized.

    • You can filter thousands of printers by column by activating the LBP Enabled option. You can also locate a specific printer by typing the printer name or partial name.

    • The group policy Config the LBP Parallel Mode improves the printer mapping experience when users have massive LBP printers.

    • Media Optimization for Microsoft Teams offers simulcast support, which enables multiple video call streams at the same time in meetings, allowing better experience with low network quality. (Windows, Mac, and Linux clients).

  • Horizon Agent for Linux

    • This release adds support for the following Linux distributions:

      • Red Hat Enterprise Linux (RHEL) Workstation 8.8 and 9.2

      • Red Hat Enterprise Linux (RHEL) Server 8.8 and 9.2

      • Rocky Linux 8.8 and 9.2

      • Debian 11.6 and 11.7

    • This release drops support for the following Linux distributions:

      • RHEL Workstation 8.4

      • RHEL Server 8.4

    • This release adds support for VMware Horizon Recording. This feature allows administrators to record desktop and application sessions to monitor user behavior for Linux remote desktops and applications.

    • VMware Integrated Printing now supports the ability to add a watermark to printed jobs. Administrators can enable this feature using the printSvc.watermarkEnabled property in /etc/vmware/config.

    • Administrators can store the VMwareBlastServer CA-signed certificate and private key in a BCFKS keystore. Two new configuration options in /etc/vmware/viewagent-custom.conf, SSLCertName and SSLKeyName, can be used to customize the names of the certificate and private key.

  • Horizon Client

    • For client certificates, Horizon 8 administrators can set the Connection Server enforcement state for Windows Client sessions and specify the minimum desired security setting to restrict client connections.

    • The Unlock a Desktop With True SSO and Workspace ONE feature is now supported on Horizon Mac and Linux clients.

  • Horizon RESTful APIs

    • New REST APIs for Application pool, Application icon, Virtual Center summary statistics, UserOrGroupsSummary, Datastore usage, Session statistics, Machines etcetera are available along with existing API updates to create robust automations. For more details, refer to API documentation.

Horizon 8 API

For the latest set of Horizon 8 APIs, see the VMware Horizon API and navigate to the current release in the drop down.  Click on the Documentation tab for more details and examples on how to use the API.

Horizon Cloud Connector and Horizon Edge

Applicable to customers with VMware Horizon Universal Subscription, Horizon Enterprise Plus Subscription, Horizon Standard Plus Subscription, Horizon Apps Universal Subscription, or Horizon Apps Standard Subscription. 

The Horizon Cloud Connector virtual appliance is a required component for connecting VMware Horizon 8 to Horizon Control Plane current-gen for subscription licensing enablement and additional Horizon Cloud SaaS services.  The Horizon Edge is a required component for connecting VMware Horizon 8 to Horizon Control Plane next-gen for subscription licensing enablement and additional Horizon Cloud SaaS services.

Horizon 8 Deployed on Public Cloud SDDCs

For a list of VMware Horizon 8 features supported on Azure VMware Solution (AVS), see VMware Knowledge Base article 80850.

For a list of VMware Horizon 8 features supported on VMware Cloud on AWS, see VMware Knowledge Base article 58539.

For a list of VMware Horizon 8 features supported on Google Cloud VMware Engine, see VMware Knowledge Base article 81922.

For a list of VMware Horizon 8 features supported on Oracle Cloud VMware Solution, see VMware Knowledge Base article 88202.

Before You Begin

  • Microsoft Internet Explorer no longer supported for Horizon Console from Horizon 2111 onwards

    As Horizon Console is migrating to VMware clarity widgets which do not support Internet Explorer, we have removed Internet Explorer from the list of supported browsers for Horizon Console.

  • VMware Virtualization Pack for Skype for Business is no longer supported in this release. When using this release of Horizon Client with Horizon Agent 2212 or earlier, VMware Virtualization Pack for Skype for Business will continue to run in fallback mode.

  • Important note about installing VMware Tools

    If you plan to install a version of VMware Tools downloaded from VMware Product Downloads, rather than the default version provided with vSphere, make sure that the VMware Tools version is supported. To determine which VMware Tools versions are supported, go to the VMware Product Interoperability Matrix. (Supported versions: 11.1.0, 11.0.6, 10.3.22, 10.3.21). There are also performance issues with the 11.x versions of VMware Tools. For more information, see VMware Knowledge Base article 78434.

  • Downgrading Connection Server instances is not supported. To revert to a previous version after an upgrade, restore from backup. For more information, see Create a Replicated Group After Reverting Connection Server to a Snapshot.

  • VMware Horizon 8 uses only TLSv1.1 and TLSv1.2. TLSv1.1 is disabled by default. In FIPS mode, it uses only TLSv1.2. You might not be able to connect to vSphere unless you apply vSphere patches.

  • It is possible that the ordering of cipher suites can be enforced by Connection Server. For more information, see Horizon Security.

  • Connection Server must be able to communicate on port 32111 with other Connection Servers in the same pod. If this traffic is blocked during installation or upgrade, installation will not succeed.

  • TLS handshakes on port 443 must complete within 10 seconds, or within 100 seconds if smart card authentication is enabled. In previous releases of VMware Horizon, TLS handshakes on port 443 were allowed 100 seconds to complete in all situations. You can adjust the time for TLS handshakes on port 443 by setting the configuration property handshakeLifetime. Optionally, the client that is responsible for an over-running TLS handshake can be automatically added to a blacklist. New connections from blacklisted clients are delayed for a configurable period before being processed so that connections from other clients take priority. You can enable this feature by setting the configuration property secureHandshakeDelay. For more information about setting configuration properties, see Horizon Security.

  • If you have FIPS mode enabled, you cannot mix Horizon 7.10.3 pods and any Horizon 8.x pods in a single CPA federation.  In addition, you cannot upgrade the original Horizon 7.10.3 version directly to a Horizon 8.x pod.  You will first need to upgrade to a patched 7.10.3. Contact VMware Customer Connect on how to obtain the patch.

  • When you deploy an instant clone as a RDS host, do not reboot the RDS host directly from within the Windows Server OS. Instead, refresh the instant clone VM using the push image workflow.

  • In VMware Horizon 8, internal validation checks determine if the instant clone and internal template have valid IP addresses and a network connection. If a virtual machine has a NIC that cannot be assigned an IP address during provisioning, instant-clone provisioning fails.

    The forwarding rules for HTTP requests received by Connection Server instances have changed at this release. If you have defined custom frontMapping entries in locked.properties, you should remove them before upgrading. If you wish to disallow administrator connections to certain Connection Server instances, then instead of defining custom frontMapping entries, add this entry to locked.properties:

    frontServiceWhitelist = tunnel|ajp:broker|ajp:portal|ajp:misc|moved:*|file:docroot

  • In VMware Horizon 8, the viewDBChk tool will not have access to vCenter credentials and will prompt for this information when needed.

  • Microsoft Windows Server requires a dynamic range of ports to be open between all Connection Servers in the VMware Horizon 8 environment. These ports are required by Microsoft Windows for the normal operation of Remote Procedure Call (RPC) and Active Directory replication. For more information about the dynamic range of ports, see the Microsoft Windows Server documentation.

  • Screen DMA is disabled by default in virtual machines that are created in vSphere 6.0 and later. VMware Horizon 8 requires screen DMA to be enabled. If screen DMA is disabled, users see a black screen when they connect to the remote desktop. When VMware Horizon 8 provisions a desktop pool, it automatically enables screen DMA for all vCenter Server-managed virtual machines in the pool. However, if Horizon Agent is installed in a virtual machine in unmanaged mode (VDM_VC_MANAGED_AGENT=0), screen DMA is not enabled. For information about manually enabling screen DMA, see VMware Knowledge Base (KB) article 2144475.

  • To use View Storage Accelerator in a vSphere environment, a desktop virtual machine must be 512GB or smaller. View Storage Accelerator is disabled on virtual machines that are larger than 512GB. Virtual machine size is defined by the total VMDK capacity. For example, one VMDK file might be 512GB or a set of VMDK files might total 512GB. This requirement also applies to virtual machines that were created in an earlier vSphere release and upgraded to vSphere 5.5.

  • The Global Policy, Multimedia redirection (MMR), defaults to Deny. To use MMR, you must open Horizon Console, edit Global Policies, and explicitly set this value to Allow. To control access to MMR, you can enable or disable the Multimedia redirection (MMR) policy globally or for an individual pool or user. Multimedia Redirection (MMR) data is sent across the network without application-based encryption and might contain sensitive data, depending on the content being redirected. To ensure that this data cannot be monitored on the network, use MMR only on a secure network.

  • The USB Redirection setup option in the Horizon Agent installer is deselected by default. You must select this option to install the USB redirection feature. For guidance on using USB redirection securely, see Deploying USB Devices in a Secure VMware Horizon Environment.

  • For information on security considerations and disallowing inter-virtual machine transparent page sharing, see VMware KB article 2080735.

  • If a PCoIP Secure Gateway (PSG) has been deployed for PCoIP connections, zero client firmware must be version 4.0 or later.

  • RC4, SSLv3, TLSv1.0 and TLSv1.1 are disabled by default in VMware Horizon 8 components, in accordance with RFC 7465, "Prohibiting RC4 Cipher Suites," RFC 7568, "Deprecating Secure Sockets Layer Version 3.0," PCI-DSS 3.1, "Payment Card Industry (PCI) Data Security Standard", and SP800-52r1, "Guidelines for the Selection, Configuration, and Use of Transport Layer Security (TLS) Implementations." If you need to re-enable RC4, SSLv3, TLSv1.0 or TLSv1.1 on a Connection Server or Horizon Agent machine, see Older Protocols and Ciphers Disabled in View.

  • VMware Horizon 8 uses version m86 of Microsoft WebRTC source code.


Check the VMware Product Interoperability Matrix before upgrading your Horizon deployment. Note the following guidance:

  • You can only upgrade to a version with a release date later than your current deployment. This may be confusing if you are upgrading from an ESB maintenance release.  For example, Horizon 7.13.3 was released after Horizon 8 version 2212, so you cannot upgrade from Horizon 7.13.3 to Horizon 2212.  You can only upgrade to a version that is released after the Horizon 7.13.3 release date, such as Horizon 2303.

  • When upgrading from a non-ESB version to an ESB version, the target ESB version must  be later that your current non-ESB release. For example, you cannot upgrade from Horizon 8 2203 (non-ESB) to Horizon 8 2111.1 (ESB) even though 2111.1 was released after 2203 (or you will lose features).  You can only upgrade to Horizon 8 2212 or later versions.

Compatibility Notes

The table below contains specific compatibility information as well as links to information located elsewhere.


Compatibility Information or Link

Horizon Client

Horizon Client with Windows 10 and 11


Horizon Agent

Horizon Agent with Windows 10 and 11 - guest operating systems on single-user machines and RDS hosts


Horizon Agent with OSs other than Windows 10 and 11 - guest operating systems on single-user machines and RDS hosts


Horizon with Windows 10 - update or upgrade requirements


Horizon Agent with Linux guest operating systems

System Requirements for Horizon Agent for Linux


Horizon Server

Horizon with Operating Systems, MSFT Active Directory Domain Functional Levels, and Events Databases


Horizon Software Interoperability

Horizon 8 2306 interoperability with VMware products

VMware Product Interoperability Matrix - Horizon 8 2306

Horizon 8 2306 with third-party products

VMware Product Interoperability Matrix - Horizon 8 2306 - 3rd Party

Horizon Hardware Compatibility

Horizon with third-party peripherals

VMware Validated Peripherals

Horizon with NVIDIA GPU cards


Resolved Issues

The list below indicates major issue(s) resolved in this release. The number provided before each resolved issue refers to the VMware internal issues tracking system.

  • 2852439: When administrators try to access the Horizon Console without closing the browser or opening a new session in another tab or reloading the page after leaving the interface idle on the Login Page for an extended period of time (longer than the value for Global Settings Timeout), they are not able to log in even with correct credentials.

  • 3235880: Unnecessary localization of NetBIOS domain names on Connection Server Console UI resulted in 'AM' and 'PM' being translated into Japanese or Chinese when those languages were selected in the browser. The text is no longer localized and now displays as 'AM' and 'PM' in the browser.

  • 3236141: On pools with Multi-User Assignments enabled, changing the 'Access Group' directory of the pool results in removing random user entitlements from machines.

  • 3236149: When the load-index reported by most of the agents was less than the default load-index-threshold of 75, it was not possible to accommodate only the least-loaded RDS hosts in the first bucket. The load-index-threshold is now 20, meaning that the least-loaded Server will be added to first bucket. This guarantees that load distribution will occur fairly among the least-loaded Servers.

  • 3236198: An incorrect or unknown value displayed for the monitor resolution in the Horizon Admin UI when selecting a snapshot for a pool. Monitor resolutions now match the values documented in "Estimating Memory Requirements for Virtual Machine Desktops" in the Horizon Overview and Deployment Planning guide.

Known Issues

The numbers included before the known issues refer to the issues logged in the VMware internal issue tracking system.

Horizon Connection Server

  • HZN-583: Changes to Horizon Connection Server in 2023 create an incompatibility with Workspace ONE Access if the Secure Tunnel External URL is changed from its default value.

    Workaround: Add a portalHost entry to locked.properties on each connection server, containing the full computer name as reported by the System application.

  • 3183262: The default value of security configuration setting allowUnexpectedHost has changed from true to false. This means that connections using the name or IP address of a proxy, gateway or load balancer that is not defined in locked.properties will fail, even if checkOrigin and enableCORS are both set to false.

    Workaround: Configure balancedHost and portalHost entries appropriately. See VMware KB 85801 for more information.

  • 3154957: Customers connecting their Horizon 8 pods to the Horizon Cloud next-gen control plane to consume the Horizon SaaS Subscription licensing (Universal License and Plus License) see an incorrect license expiration date in the Horizon Console.

    Workaround: Ignore the License Expiration field in Horizon Console and refer to the customer connect portal for the actual expiration date. See https://kb.vmware.com/s/article/91037 for details.

  • 3073725: Number of issues reported for ESXi Hosts in the dashboard summary may not match with number of issues reported in the dedicated ESXi Host issues section in the dashboard.

    If NVIDIA GRID vGPU support detects a mismatch with the supported vGPUs for the given host, the issue count should be incremented but the count may not display in the UI.

    Workaround: View the warnings in Dashboard > System Health > View  > vSphere > ESX Hosts.

  • 3117780: The Edit vCenter model cannot be closed using the OK button when no changes are made.

    Workaround: Use the Cancel button to close the model.

  • 3076811: Admin console doesn’t open with localhost(loopback address) in IPv6.

    Workaround: Use the fully Qualified domain name instead of localhost in the URL to open the admin console. For example, if the fully qualified domain name is (test-machine-1.hzeipv6.local) then the URL to open the admin console would be: https://test-machine-1.hzeipv6.local/admin/

  • 2712612: Substituting cluster certificates causes True SSO configuration to fail.

    Workaround: Contact your VMware representative for assistance with this. The issue will be fixed in an upcoming release.

  • 3020358: Horizon Connection Server fails to validate the server certificate of a vCenter instance, preventing a successful connection. This can happen even if an older version of Horizon can connect successfully using the same certificate. In the Connection Server debug log, you will see an exception similar to this:

    2022-08-14T08:59:19.762-04:00 DEBUG (207C-17B4) <ajp-nio-> [Connection4] [EXCEPTION] Connection to the vCenter Server https://SITE-VCENTER.DOMAIN.FOREST:443/sdk failed.: javax.xml.ws.WebServiceException: Could not send Message. com.vmware.vdi.logger.Logger.debug(Logger.java:44)

    javax.xml.ws.WebServiceException: Could not send Message.....

    This is caused by javax.net.ssl.SSLHandshakeException: SSLHandshakeException invoking https://SITE-VCENTER.DOMAIN.FOREST:443/sdk: Certificates do not conform to algorithm constraints

    Workaround: Follow the steps in https://kb.vmware.com/kb/89331

  • 3004222: View API consumers like the MP4H Adapter invoke MachineDetailsView. This API fails intermittently with user data not found error.

    Workaround: None

  • 1778303: When you restart or reset a virtual machine for which an end user session exists in a desktop pool from vCenter Server or from the Windows Operating System menu, the virtual machine restarts but the status of the virtual machine might appear in the “Already Used” state in Horizon Console.

    This problem can occur for the following pool types:

    • Instant-clone desktop pools.

    • Full-clone floating desktop pools with "Delete on log Off" enabled.

    Workaround: Use Horizon Client to restart or reset the virtual machine in the instant-clone desktop pool. If the virtual machine is already in the “Already Used” state, remove the virtual machine. This action automatically creates a new virtual machine based on the pool provisioning settings.

  • 1817536: If you provision instant clones on local datastores, the corresponding hosts cannot be put into maintenance mode. This occurs because the internal VMs and the instant clones are stored on local datastores so they cannot be migrated.

    Workaround: Delete the instant-clone desktop pool. This will delete the related VMs and enable the corresponding hosts to enter maintenance mode.

  • 1548405: Universal Windows Platform (UWP) applications are not supported as published applications on Windows Server 2016 and Windows Server 2019 RDS hosts.

  • 1605667: For True SSO, the connectivity status between the Connection Server instance and the enrollment server is displayed only on the System Health Status dashboard for the connection server that you are using to access Horizon Console. For example, if you are using https://server1.example.com/admin for Horizon Console, the connectivity status to the enrollment server is collected only for the server1.example.com connection server. You might see one or both of the following messages:

    • The primary enrollment server cannot be contacted to manage sessions on this connection server.

    • The secondary enrollment server cannot be contacted to manage sessions on this connection server.

    It is mandatory to configure one enrollment server as primary. Configuring a secondary enrollment server is optional. If you have only one enrollment server, you will see only the first message (on error). If you have both a primary and a secondary enrollment server and both have connectivity issues, you will see both messages.

  • 1850273: When you set up True SSO in an environment with CAs and SubCAs with different templates set up on each of them, you are allowed to configure True SSO with a combination of templates from a CA or SubCA with another CA or SubCA. As a result, the dashboard might display the status of True SSO as green. However, it fails when you try to use True SSO.

  • 1864310: In Horizon Help Desk Tool, the pod name does not appear if the session is a local session or a session running in the local pod.

    Workaround: Set up the Cloud Pod Architecture environment to view pod names in Horizon Help Desk Tool.

  • 1880134: The Workspace ONE mode setting is not reflected in the replica server from Workspace ONE.

    Workaround: Configure the Workspace ONE mode in Connection Server.

  • 1880355: In a Cloud Pod Architecture environment, pre-launched application sessions from global application entitlements are not shown in Inventory > Search Sessions in Horizon Console.

    Workaround: Log in to the Horizon Console user interface for a Connection Server instance in the hosting pod and select Monitoring > Events to view pre-launched session information.

  • 1569435: For Intel vDGA, only the Haswell and Broadwell series of Intel integrated GPUs are supported. Broadwell integrated GPUs are supported only on vSphere 6 Update 1b and later. Haswell integrated GPUs are supported on vSphere 5.5 and later. The GPU must be enabled in the BIOS before it can be recognized by ESXi. For more information, see the documentation for your specific ESXi host. Intel recommends leaving the graphics memory settings in the BIOS set to their default values. If you choose to change the settings, keep the aperture setting at its default (256M).

  • 1946086, 1936954: For vCenter Server 6.0 U3 or later, including vCenter Server 6.5, internal parent VMs migrate to another host during failure. This migration causes an issue because unnecessary parent VMs reside on the destination host.

    Workaround: Manually remove these parent VMs. For more information, see the Windows Desktops and Applications in Horizon document.

  • 1951074, 1936743: To reduce the possibility of memory exhaustion, vGPU profiles with 512 MB or less of frame buffer support only one virtual display head on a Windows 10 guest operating system.

    The following vGPU profiles have 512 Mbytes or less of frame buffer:

    • Tesla M6-0B, M6-0Q

    • Tesla M10-0B, M10-0Q

    • Tesla M60-0B, M60-0Q

    • GRID K100, K120Q

    • GRID K200, K220Q

    Workaround: Use a profile that supports more than one virtual display head and has at least one GB of frame buffer.

  • 1952105, 1928484: Virtual desktops and published desktops and application pools fail to launch if they have the client restriction feature enabled and are entitled to a domain that is configured with a one-way AD trust.

    Workaround: None.

  • 1961900: After an upgrade, the bookmarks do not appear in Workspace ONE.

    Workaround: Add the bookmarks from the catalog in Workspace ONE again.

  • 2020365, 2018588: After you disconnect and reconnect the network cable and click "Disconnect and Log Off" on the client machine, the remote desktop does not disconnect and log off.

    Workaround: Manually close the window of the remote desktop and disconnect from the remote session.

  • 2024833: When you create full clones with the Sysprep customization method, customization and domain joining sometimes fails on Windows 10 guest operating systems.

    Workaround: This occurs because of a Microsoft Windows issue. To resolve this issue, follow the steps in this Microsoft help article: Sysprep fails after you remove or update Microsoft Store apps that include built-in Windows images.

  • 2085284, 2001591: When you use Safari version 10.1.1 as the Web browser to log in to Horizon Console with a Fully Qualified Domain Name, user interface issues such as the bottom panels appearing blank can occur.

    Workaround: Safari version 10.1.1 is not a supported Web browser version for Horizon Console. Use a Safari version earlier than version 10.1.1 or version 11.0.2 and later to log in to Horizon Console.

  • 2074958, 2067873: The following user interface issues occur in Horizon Help Desk Tool for global Linux sessions in a Cloud Pod Architecture deployment:

    • An internal error occurred message appears, the Skype for Business status is not displayed, and the operating system version displays as “-” when you click the session details on the Details tab.

    • A “failed to get Remote Assistance ticket” message appears when you click Remote Assistance.

    • An internal error occurred message appears when you click the Applications tab.

    Workaround: None. Horizon Help Desk does not support the following user interface features for Linux desktops: Skype for Business status, Remote Assistance, Applications tab, and the session idle status.

  • 2104955, 2104953: Horizon Console does not update the space reclamation information for a vCenter Server on vSphere version 6.7 that uses the VMFS6 with the automatic UNMAP feature.

    Workaround: None.

  • 2085281, 2000267: Login to Horizon Console fails if you use the IP address to login to Horizon Console on a Firefox, Google Chrome, Microsoft Edge, Firefox, or Safari Web browser.

    Workaround: Use the Fully Qualified Domain Name (FQDN) to login to Horizon Console. For more information on using FQDN to log in to Web applications, see the Horizon Security document.

  • 2091333: After an upgrade to vSphere 6.7, you cannot use the custom specification created with a vSphere version earlier than 6.7.

    Workaround: After an upgrade to vSphere 6.7, create a new custom specification and use this specification for pool provisioning.

  • 2093129, 2069708: Horizon Help Desk Tool displays the logon time for both the brokering pod and the hosting pod but does not display the logon time for a pod that is neither the brokering pod nor the hosting pod. Horizon Help Desk Tool displays the logon time after a few minutes for the hosting pod if the brokering pod is a remote pod.

    Workaround: If Horizon Help Desk Tool does not display the logon time for the hosting pod, close the page that displays session details, wait 7-8 minutes and navigate to the Details tab to view the session details again.

  • 2111978, 2073141: VMware Identity Manager sometimes fails to launch desktops. When you save SAML configuration details for the first time in VMware Identity Manager with SAML enabled on Connection Server, desktops do not start.

    Workaround: Save the profile again and perform a sync operation on the new profile. The sync operation can occur every hour or day, as set by the administrator.

  • 2126853: Horizon Single Sign On fails when the scope of the trust authentication setting is set to “Selective Authentication".

    Workaround: Use one of the following workarounds to resolve this issue.

    • Use domain-wide authentication.

    • Continue to use the “Selective Authentication” security setting, but explicitly grant each Horizon Connection Server host (local system) accounts the "Allowed to Authenticate" permission on all the domain controllers of the computer objects (resource computers) that reside in the trusting domain or forest. For information on how to grant the "Allowed to Authenticate" permission, see the Microsoft article "Grant the Allowed to Authenticate permission on computers in the trusting domain or forest."

  • 2146919: With the Cloud Pod Architecture feature, in certain circumstances RDS licensing servers issue multiple permanent licenses to the same client in a mixed-mode licensing environment.

    Workaround: None. This problem is a third-party issue and is in line with the way Microsoft RDS license servers issue licenses.

  • 1629622: Attempts to connect to the HTML Access portal or one of the administration consoles using an IP address or CNAME fails for most browsers without additional configuration. In the majority of these cases, an error is reported but sometimes a blank error message is displayed.

    Workaround: To resolve this issue, see “Origin Checking” in the Horizon 8 Security document.

  • 2217199: If the same user exists in both Connection Server pods that need to be paired in a Cloud Pod Architecture environment, Horizon Console displays the value for “Source Pods” as 2 and sources the user from both pods. An administrator can edit the user from both pods, which might cause inconsistencies in user configuration during hybrid logon. Additionally, hybrid logon for the user cannot be disabled.

    Workaround: You must delete the user from both pods and then recreate the user and configure the user for hybrid logon.

  • 2222221: Core-dump error messages are generated while adding Virtual Volumes datastores on nested ESXi or nested virtual ESXi.

    Workaround: None.

  • 2277110: When you add a vCenter Server to Connection Server using an existing PowerShell script, the following error message appears:

    Failed to add vc instance: No enum constant com.vmware.vdi.commonutils.Thumbprint.Algorithm.SHA-1

    This issue occurs because the certificateEncoding property that indicates a certificate override for self-signed certificates is added in Horizon 7 version 7.8. Therefore, earlier versions of VMware PowerCLI scripts that have an incorrect value of SHA-1 fail.

    Workaround: Update the PowerShell scripts to use the property value DER_BASE64_PEM instead of SHA-1. For example, set $certificate_override.sslCertThumbprintAlgorithm = 'DER_BASE64_PEM'.

  • 2356156: When a Universal Windows Platform (UWP) application is upgraded, the path containing the version changes, and the application is unreachable by the original path. The app status is Unavailable in Horizon Console and a user cannot launch the app.

    Workaround: Update the app path in Horizon Console after an upgrade and verify the app status is Available. Alternatively, do not upgrade the app.

  • 2330942: When device filtering is configured for the client drive redirection feature and a user uses the RDP display protocol to connect, device filtering does not work.

    Workaround: When device filtering is configured for client drive redirection, configure Connection Server so that RDP connections are not allowed.

  • 2300801: The True SSO desktop unlock feature is supported in PCoIP and Blast protocols, but not in Remote Desktop Protocol (RDP).

  • 2358355, 2353567: In Horizon Console, the user or group summary fails to load due to domain trust issues in the following cases:

    • When users and groups belong to a one-way trust domain and the logged in administrator has the necessary permissions from a one-way trust domain.

    • When users and groups belong to a two-way trust domain and the logged in administrator has the necessary permissions from a two-way trust domain.

    • When users and groups belong to a one-way or two-way trust domain and the logged in administrator is from the child domain and has the necessary permissions.

    Workaround: None.

  • 2363188, 2354034: In Horizon Console, some events might not be listed because the Connection Server time is set incorrectly with respect to the Connection Server time zone.

    Workaround: None.

  • 2366007, 2339388: You can recover an instant-clone virtual machine with an active session in Horizon Console.

    Workaround: None.

  • 2516216, 2514333: The Pre-launch and Use Home Site options do not work well together for global application entitlements. When you create a global application entitlement, if you enable both the Pre-launch and Use Home Site options, the pre-launched session might not be created from the home site. This problem occurs because the same session is used to start subsequent applications, and those sessions are not started from the home site.

    Workaround: None.

  • 2510477, 2500272: The following error message can appear while installing or uninstalling Connection Server:

    "Error opening installation log file. Verify that the specified location exists and is writable."

    This error occurs due to a third-party Microsoft error. For details see this Microsoft help article.

    Workaround: Restart the virtual machine on which the Connection Server is installed.

  • 2686004, 2672069: The CSRF feature for Horizon HTML Access introduced in Horizon 2006 does not support the combination of a pre-login message configured on Connection Server with SAML authentication through Unified Access Gateway.

    Workaround: If you use this combination of features and Horizon version, disable this pre-login message on Connection Server. A pre-login message should instead be configured on the SAML IdP, so that it is presented to the user before the user enters their credentials.

  • 2986303: Certificates signed using SHA-1 are no longer supported in FIPS mode.

    Workaround: See Older Protocols and Ciphers Disabled in VMware Horizon in the Horizon Security guide.

Horizon Cloud Connector / Horizon Edge

  • 2295015: When you use the HTML5-based vSphere Web client to deploy the Horizon Cloud Connector / Horizon Edge virtual appliance OVA file, the following error occurs: “Invalid value 'false' specified for property proxySsl. Failed to deploy OVF package.”

    Workaround: Use the vSphere Web Client to deploy the Horizon Cloud Connector / Horizon Edge virtual appliance OVA file.

  • 2360709, 2360707: When starting Horizon Cloud Connector / Horizon Edge, you encounter the message "[FAILED] Failed to start Wait for Network to be Configured. See 'systemctl status systemd-networkd-wait-online.service' for details."

    This message is displayed incorrectly and does not indicate an actual problem with the network. You can disregard the message and continue to use Horizon Cloud Connector / Horizon Edge as usual.

Horizon Agent for Linux

This section describes issues that might occur with Horizon Agent for Linux or when you configure a Linux desktop.

  • 2969881: NVIDIA GRID 14.0 GPU with P100 vGPU profile is not supported for Linux desktops.

    Workaround: Use NVIDIA GRID 14.1 GPU instead.

  • 2213769: Sometimes the Collaboration window might not appear after you connect to a remote desktop and click the Collaboration UI icon.

    Workaround: Resize the desktop window or reconnect to the remote desktop.

  • 1823753: The Linux agent's keyboard layout and locale do not synchronize with the client if the Keyboard Input Method System is set to fcitx.

    Workaround: Set the Keyboard Input Method System to iBus.

  • 2326969: When a client user authenticating with smart card redirection connects to an Ubuntu 18.04 desktop and removes or reinserts the smart card before entering the PIN, the desktop does not appear to recognize the change. The desktop will only detect a change in the smart card's state after the user closes the prompt asking for the PIN.

    Workaround: At the prompt, enter the smart card PIN and click OK. Or click Cancel to dismiss the prompt without entering a PIN.

  • 2322548: When a client user connects to an Ubuntu 18.04 desktop, "Error 2306: No suitable token available" appears on the login screen. This error message indicates that a smart card has been removed from the client system.

    Workaround: The user can log in to the desktop by entering the user password or reinserting the smart card.

  • 2322562: On Ubuntu 18.04, the desktop screensaver does not lock as expected when the user removes a smart card from the client system. By default, the desktop screensaver does not lock even after the client user removes the smart card used to authenticate into the desktop.

    Workaround: Configure pkcs11_eventmgr to specify the correct screensaver behavior in response to smart card events.

  • 1850274: If you configure two monitors with different resolutions, and the resolution of the primary screen is lower than that of the secondary screen, you might not be able to move the mouse or drag application windows to certain areas of the screen.

    Workaround: Make sure that the primary monitor's resolution is at least as large as the secondary monitor's.

  • 2258947: When you use a smart card on a RHEL 7.x desktop and enable the option to lock the screen upon removal of the card, the screen might lock immediately after you log in with the smart card. This is a known issue with RHEL 7.x.

    Workaround: To access the desktop, unlock the screen after logging in with the smart card.

  • 2398096: If a client user minimizes the window of a Linux published application using the Minimize command and then selects the Maximize command, the window is restored to its previous size instead of changing to full-screen mode as expected.

    Workaround: To change to full-screen mode, select the Maximize command again.

  • 2483646: Linux published applications do not support using the window taskbar to divide the work area in a multiple-monitor display. For example, suppose a client user has two monitors arranged side by side. If the user moves the taskbar to the right side of the left monitor's screen or the left side of the right monitor's screen, the work area is divided into two parts. However, if the user then maximizes the application window, the window is displayed incorrectly in relation to the taskbar.

  • 2502364: When connecting to a Linux published application from Horizon Client for Mac, the application window is displayed with square corners instead of rounded corners.

  • 2536164: If a client user leaves a nonmodal dialog box open in a Linux published application and then makes active a native application on the client system, part of the dialog box will appear to be missing when the user returns to the published application.

  • 2538998: If the client user minimizes a Linux published application window or brings another application in front of the published application window, the taskbar fails to display the thumbnail preview of the published application window. Hovering over the published application icon in the taskbar displays a blank thumbnail instead of the contents of the published application window.

  • 2539011: Linux published applications do not support the Aero Snap feature on Windows client systems. Users connecting to a Linux published application from Horizon Client for Windows do not have the capability to snap or fix windows to the edges of the computer screen using the keyboard or mouse.

  • 2539030: Linux published applications do not support the jump list feature on Windows client systems. If a user connects to a Linux published application from Horizon Client for Windows and right-clicks the taskbar icon for the application, no jump list is displayed.

  • 2539088: Due to a limitation in the work area, Linux published application windows cannot be moved partially off the edge of the client's screen or work area. If the user attempts to move a published application window past the edge of the screen, the window will bounce back inside the screen's boundaries.

  • 2540474: If the client user opens a modal dialog box from a Linux published application, that dialog box might not appear in front of native windows.

  • 2541343: When connecting to a published application from a Windows client system, there are some differences between the context menus of the Windows taskbar and the application window's title bar. Shift + right-clicking the application icon in the Windows taskbar displays a menu with the items: Restore, Move, Size, Minimize, Maximize, Close. Right-clicking the application window's title bar displays a menu with the items: Minimize, Maximize, Move, Resize, Close.

  • 2397650: Published applications do not support the Move and Size context commands for the taskbar on Windows client systems. When a user Shift + right-clicks the published application icon in the Windows taskbar, Move and Size appear in the menu but neither command has any effect if selected.

  • 2541928: Published applications do not support the Size command from the application window's context menu. When a user right-clicks the title bar of the application window, Size appears in the menu of commands but has no effect if selected.

  • 2557790: When a user opens multiple session windows for the same published application on a Windows client system, the Cascade all windows command has no effect.

  • 2567292: If a Windows client user with a dual monitor configuration maximizes a published application in the lower-resolution monitor's work area, the Windows taskbar turns black.

  • 2568171: After publishing a LibreOffice application as an application pool, duplicate LibreOffice icons might appear in Horizon Client.

    Workaround: From the Connection Server, manually assign the icon for the LibreOffice application.

  • 2569231: Linux published applications do not support the Multi-Session Mode option in the application pool settings in Horizon Console.

  • 2536161: When connected to a Linux published application, if the user opens a dialog box related to user account controls (such as when editing firewall settings), the desktop will not show.

  • 2523872: Horizon Agent for Linux does not support session stealing between published desktops and published applications. For example, if a user has opened a published desktop session and then attempts to open an application session based on the same farm, the desktop session remains active and the application session is not established. Likewise, if the user has opened an application session and then attempts to open a published desktop session based on the same farm, the application session remains active and the desktop session is not established.

  • 2662387: If a user types an entry into the Session Collaboration invitation text box and moves the cursor away from the text box, the original entry is cleared.

  • 2684670: If a client user with a multi-monitor system opens a published application in seamless window mode, display problems might occur when moving the application window between monitors.

    Workaround: Shift + right-click the application icon in the client's task bar and select Maximize to enlarge and refresh the window display.

  • 2684687: Display problems might occur when a client user opens published applications in seamless window mode on a multi-monitor system where some monitors have portrait orientation and other monitors have landscape orientation. If the user maximizes the application windows in all the monitors, the task bar appears black in the landscape monitors.

  • 2668258, 2576341: When client users copy content containing images in rich text format and then paste the content into an application on a remote Linux desktop, the images might be missing from the pasted content. This issue is caused by a limitation in certain third-party applications such as OpenOffice or LibreOffice, not by Horizon Agent for Linux.

    Workaround: Use a clipboard manager to retrieve the missing content from the clipboard.

  • 2786998: When a user prints a document using the Printer Redirection feature from LibreOffice or Firefox, the document's headers and footers are missing from the output.

    Workaround: Use a different office application or browser to print the document.

  • 2787001: When a user prints a document in landscape orientation using the Printer Redirection feature, the print job sometimes fails.

    Workaround: None

  • 2745267: Horizon Agent for Linux only recognizes valid characters in printer names. The agent replaces invalid characters in the printer name with underscores and truncates the name if its length exceeds 128 bytes.

    Workaround: None

  • 2748100: The page margins and offsets in print jobs redirected from a remote desktop do not match the page margins and offsets in print jobs printed locally from the client system. This inconsistency is caused by different implementations of page scaling on the agent and client.

    Workaround: Turn off the page scaling option by setting it to 100% or None, on both the remote desktop and the client system.

  • 2741260: When print jobs are redirected from the remote desktop to a Windows client, N-up layouts do not print correctly. These layouts always output as left to right, and top to bottom.

    Workaround: None

  • 3051022: The Enter Ctrl + Alt + Del control in Horizon Client does not take effect when connected to a RHEL 7.9 desktop with MATE desktop environment.

    Workaround: Use the default keyboard shortcut for logging out of a MATE desktop. Or, define a custom keyboard shortcut for logging out.

  • 3158384: A small blank recording (2-3 kb) is sometimes created when a blast session running on Linux agent is being recorded by the Horizon Recording solution.

    Workaround: None. There is no adverse effect on the functionality except that a small recording can be seen in the recordings page for some of the sessions during a fresh logon.

Horizon Agent

  • 2975449: When a Microsoft Teams user selects background blur image for their video call or meeting, that setting does not persist after user disconnects/logs off from the desktop or restarts the Teams service inside the desktop.

    Workaround: User needs to remember to preselect Background blur when they log in or restart Teams.

  • 2980199: Default audio device cannot be set successfully when microphone privacy is disabled for first logged in user.

    Workaround: Disconnect the remote session or change the default audio device on client side; this triggers the device to change in the remote session.

  • 1993397: If a collaborator joins a multi-monitor session and enables relative mouse mode on their client, it is possible for the mouse to move to a secondary monitor that the collaborator cannot see.

    Workaround: Move the mouse back on to the screen. Alternatively, don't use relative mouse mode in a multi-monitor session.

  • 2776478, 2708700: When the URL Content Redirection feature is configured, Horizon Client presents an alert message that asks you to change your default web browser to VMware Horizon URL Filter for using third-party apps, not including the Chrome and Microsoft Edge (Chromium) browsers. You must click Yes to use the URL Content Redirection feature. In macOS 11 (Big Sur), even when you click Yes to the alert message, the VMware Horizon URL Filter user interface is not shown in the default web browser of the general option, which means you cannot change the default web browser from another browser to VMware Horizon URL Filter manually, and you must connect to the server again. In macOS 10, the user interface is shown in the default web browser of the general option. The URL Content Redirection extensions for the Chrome and Microsoft Edge (Chromium) browsers are not influenced by macOS 11.

    Workaround: None. This problem is a third-party issue.

  • 1799790: A warning message about applications in use appears when you uninstall Horizon Agent on Windows Server 2016.

    Workaround: Click “Ignore” in the dialog box that appears when you use Windows Add or Remove Programs to uninstall Horizon Agent. If you uninstall Horizon Agent from the command line, use the command msiexec /x /qn {GUID of Agent} instead of the command msiexec /x {GUID of Agent}.

  • 1874531, 1699275: When you uninstall the Horizon Agent, the mouse speed becomes slow and jerky. Uninstalling Horizon Agent also uninstalls the vmkbd.sys driver.

    Workaround: Repair VMware Tools on the Horizon Agent virtual machine.

  • 1993397: If a collaborator joins a multi-monitor session and enables relative mouse mode on their client, it is possible for the mouse to move to a secondary monitor that the collaborator cannot see.

    Workaround: Move the mouse back on to the screen. Alternatively, don't use relative mouse mode in a multi-monitor session.

  • 2003328: If you use Chrome with URL Content Redirection, and you set ".*.google.*" for the https protocol in filtering rules and you set Google as your home page in Chrome, redirection to google.com occurs each time you open a new tab.

    Workaround: Change the home page or the filtering rules.

  • 2022449, 2022448: When setting up a collaborative session, adding a collaborator by the email address from a two-way trusted domain fails.

    Workaround: Add the collaborator by using domain\user.

  • 2390130: After you connect to a remote desktop that has the Real-Time Audio-Video feature enabled, you might see the following message: "Your PC needs to be restarted to finish setting up this device: devicename (VDI)."

    Workaround: You can ignore this message as the device is usable in the remote desktop. Alternatively, you can turn off the Windows Settings notifications to prevent the message from being displayed.

  • 2417249: Users cannot use a serial printer with the serial port redirection feature when Horizon Agent is installed in an RDS host if the agent group policy setting COM Port Isolation Mode is set to Full Isolation (the default setting). This problem affects both Windows and Linux clients. This problem does not occur for virtual desktops.

    Workaround: Edit the COM Port Isolation Mode group policy setting, change the mode to Isolation Disabled, and restart Horizon Agent. For more information, see Configuring Serial Port Redirection Group Policy Settings in the Horizon Remote Desktop Features and GPOs document.

  • 2512363, 2401690: sysprep fails for full clones with Windows 10 1903, Windows 10 1909 guest OS with error:

    SYSPRP Sysprep_Clean_Validate_Opk: Audit mode can't be turned on if there is an active scenario.; hr = 0x800F0975

    Workaround: Apply these instructions on the golden image and then provision the desktop.

  • 2481953: When you update the OS from Windows 1809 to 1903, you might see a black screen on Horizon Agent.

    Workaround: Apply the procedure in this KB article on the OS image. If Horizon Agent is installed on an RDS host, and the Printer Name for RDSH Agents group policy setting for the VMware Integrated Printing feature is configured to use the client machine name as a suffix, the client machine name supports only English-language characters. If the client machine name contains characters in a non-English language, the VMware Integrated Printing feature does not work in published desktops and published applications.

  • 2591431, 2588938: Windows 10 2004 remote desktops respond very slowly when VBS is enabled.

    Workaround: None

  • 2590496, 2588784: Updating the None guest customization to any other guest customization on a desktop pool causes existing virtual machines to go into an unreachable state after a reboot or power cycle operation.

    Workaround: In Horizon Console Desktop Pool settings, set the guest customization to None, then reboot the existing unreachable agent VMs.

  • 2593663, 2589371: With VMware Horizon desktops using Nvidia GRID, Windows 10 build 2004, PCoIP protocol, and in multi-monitor mode, some areas of the desktop might appear black and need to be manually refreshed.

    Workaround: Use Blast protocol if available, or continue using Windows 10 build 1909.

  • 2590453, 2585527: Switching the agent desktop from window mode to multi-monitor mode with 4x4k monitors can sometimes take a few seconds.

    Workaround: None.

  • 2574035: When you run the Horizon Agent installer from a web browser download directory, the installer fails to complete installation.

    Workaround: Download the installer to a non-download directory, such as the desktop, and run it from there for a successful installation.

  • 2539025, 2357111: HTML5 Multimedia Redirection does not work with an Edge browser in an IPv6 environment.

    Workaround: None.

  • 2682571, 2672155: Remote desktops and published applications configured in Horizon 8 do not sync when using Workspace One Access Connector

    Workaround: Revert to Workspace One version 19.03.0 and perform the sync operation again.

  • 2770035, 2744714: HTML5 Multimedia Redirection does not work with https://www.glamour.com/video.

    Workaround: None.

  • 2776478, 2708700: When the URL Content Redirection feature is configured, Horizon Client presents an alert message that asks you to change your default web browser to VMware Horizon URL Filter for using third-party apps, not including the Chrome and Microsoft Edge (Chromium) browsers. You must click Yes to use the URL Content Redirection feature. In macOS 11 (Big Sur), even when you click Yes to the alert message, the VMware Horizon URL Filter user interface is not shown in the default web browser of the general option, which means you cannot change the default web browser from another browser to VMware Horizon URL Filter manually, and you must connect to the server again. In macOS 10, the user interface is shown in the default web browser of the general option. The URL Content Redirection extensions for the Chrome and Microsoft Edge (Chromium) browsers are not influenced by macOS 11.

    Workaround: None. This problem is a third-party issue.

  • 2783745: If you disable the IE browser URL Plugin, enable the Edge browser URL Content Redirection extension, and input a URL in the IE mode of the Edge address bar, Edge stops responding.

    Workaround: None.

  • 3025092: Smart Card Authentication and Redirection does not work for AWS WorkSpaces when using WorkSpaces Streaming Protocol (WSP).

    Workaround: Use AWS PCoIP instead of WSP with WorkSpaces. Amazon WorkSpaces Core does not use WSP and is not affected.

Horizon Client

This section describes problems that end users might encounter when using Horizon Client or HTML Access to connect to remote desktops and applications. For problems that occur only in a specific Horizon Client platform, see the Horizon Client release notes on the VMware Horizon Documentation page.

  • 3235572: Horizon Client crashes with "VMware Horizon View unrecoverable error" dialog when connecting to remote desktop.

    Workaround: None. You must upgrade the Horizon Client version to the 2306 or later release.

  • 2384662: Most keyboard shortcuts supported by the Google Chrome browser do not work on pages redirected using Browser Redirection.

    Workaround: None.

  • If you use Skype for Business inside a non-persistent desktop, you might reach the Skype for Business limit of 16 device certificates. When this limit is reached and Skype for Business attempts a new logon, a new certificate will be issued and the oldest assigned certificate will be revoked.

    Workaround: None.

  • 1996301: Sometimes an audio call does not start correctly from Skype to Skype for Business. The call status is "Connecting call..." on the Skype for Business client.

    Workaround: Set the English IME on the client device and set the non-English IME on the remote desktop.

  • 1704144: When you connect to a Linux desktop, some keyboard inputs do not work. For example, if you are using a non-English IME on both the client device and the remote desktop, some non-English keys are not displayed correctly.

    Workaround: None.

  • 1850278: Unicode keyboard input does not work correctly with HTML Access when connected to Linux desktops.

    Workaround: None.

  • 1711664: When you use the Ambir Image Scan Pro 490i to perform a scan on a remote desktop or application, the dialog box always displays “Scanning…” and does not complete.

    Workaround: Perform a scan on the client. The client scan calibrates the scanner. After the calibrate operation is finished, save the calibration file and deploy it in ProgramData\AmbirTechnology\ImageScanPro490i.

  • 1865373, 1863461: If a VDI desktop is in a remote location and experiencing high network latency, then a recursive unlock using smart card authentication might not work.

    Workaround: Unlock the desktop manually.

  • 2761441, 2739372: HDR support for full screen mode is limited to a scenario where the selected monitor is the primary monitor.

    Workaround: None.


VMware Horizon 8 documentation is in the VMware Horizon Documentation Center.


For Horizon 8, both the user interface and the documentation are available in English, Japanese, French, German, Simplified Chinese, Traditional Chinese, Korean, and Spanish.

To switch to a different language, click the language icon in the UI and select your preferred language.

Support Contact Information

To receive support, access VMware Customer Connect. To learn more about the support policies, see Support Policies.

For information on filing a support request in Customer Connect and via Cloud Services Portal, see the VMware knowledge base article at https://kb.vmware.com/s/article/2006985.

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