With HTML Access the client system does not require any software other than a supported browser. The View deployment must meet certain software requirements.

Note: Starting with version 7.0, View Agent is renamed Horizon Agent.
Browser on client systems
Browser Version
Chrome 57, 58
Internet Explorer 11
Safari 9, 10
Safari on mobile device iOS 9, iOS 10
Firefox 52, 53
Microsoft Edge 38, 40
Client operating systems
Operating System Version
Windows 7 SP1 (32- and 64-bit)
Windows 8.x (32- and 64-bit)
Windows 10 (32- and 64-bit)
Mac OS X 10.11 (El Capitan)
macOS 10.12.x (Sierra)
iOS 9
iOS 10
Chrome OS 28.x and later
Remote desktops
HTML Access requires Horizon Agent 7.0 or later, and supports all the desktop operating systems that Horizon 7.0 supports. For more information, see the topic "Supported Operating Systems for Horizon Agent" in version 7.0 or later of View Installation.
Pool settings
HTML Access requires the following pool settings, in Horizon Administrator:
  • The Max resolution of any one monitor setting must be 1920x1200 or higher so that the remote desktop has at least 17.63 MB of video RAM.

    If you plan to use 3D applications or if end users will use a Macbook with Retina Display or a Google Chromebook Pixel, see Screen Resolution.

  • The HTML Access setting must be enabled.

Configuration instructions are provided in Prepare Desktops, Pools, and Farms for HTML Access.

Connection Server
Connection Server with the HTML Access option must be installed on the server.

When you install the HTML Access component, the VMware Horizon View Connection Server (Blast-In) rule is enabled in the Windows Firewall, so that the firewall is automatically configured to allow inbound traffic to TCP port 8443.

Security Server
The same version as Connection Server must be installed on the security server.

If client systems connect from outside the corporate firewall, VMware recommends that you use a security server. With a security server, client systems will not require a VPN connection.

Note: A single security server can support up to 800 simultaneous connections to Web clients.
Third-party firewalls
Add rules to allow the following traffic:
  • Servers (including security servers, Connection Server instances, and replica servers): inbound traffic to TCP port 8443.
  • Remote desktop virtual machines: inbound traffic (from servers) to TCP port 22443.
Display protocol for Horizon
VMware Blast

When you use a Web browser to access a remote desktop, the VMware Blast protocol is used rather than PCoIP or Microsoft RDP. VMware Blast uses HTTPS (HTTP over SSL/TLS).