System Requirements for HTML Access

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

Browsers on the client system

Browser	Version
Chrome	81, 83
Internet Explorer	11
Safari	12, 13
Firefox	76, 77
Microsoft Edge Note: Supported only on Windows clients.	44, 81, 83
VMware Workspace ONE Web	The latest version in the Apple App Store (iOS devices) or Google Play Store (Android devices).

Note:

• On an Android device, Chrome does not support the Windows key, multiple monitors, copy and paste to the system, file transfer, printing, H.264 decoding, credential cleanup, and an external mouse. The Del, Ctrl+A, Ctrl+C, Ctrl+V, Ctrl+X, Ctrl+Y, Ctrl+Z key combinations do not work on the software keyboard.
• On a mobile device, Safari does not support an external mouse, the Windows key, multiple monitors, copy and paste to the system, file transfer, printing, H.264 decoding, and credential cleanup.

Client operating systems

Operating System	Version
Windows	10 (32-bit and 64-bit)
macOS	10.15.x (Catalina) 10.14.x (Mojave) 10.13.x (High Sierra)
iOS	10 or later
Android	7 or later

Remote desktops

HTML Access supports all the desktop operating systems that Horizon Agent supports.

Pool settings

HTML Access requires certain pool settings.

• 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 use 3D applications, or if end users use a MacBook with Retina Display or a Google Chromebook Pixel, see Setting the Screen Resolution.

Connection Server

Install the HTML Access component in Connection Server. For more information, see Preparing Connection Server.

Third-party firewalls

Add rules to allow the following traffic:

• For servers, allow inbound traffic to TCP port 8443.
• For virtual desktop machines, allow inbound traffic (from servers) to TCP port 22443.

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

Display protocols

VMware Blast

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