Microsoft RDP Client for Mac connection to GCCH

Hello Matthew !

Thank you for posting on Microsoft Learn.

When using the Microsoft RDP client for Mac to connect to a Windows VDI in Azure GCC High, you're likely encountering authentication issues because the Mac RDP client defaults to Azure Commercial endpoints for login/authentication.

Azure GCC High is a separate sovereign cloud, and it uses different login endpoints, token authorities, and resource IDs compared to Azure Commercial.

The Microsoft RDP client for Mac currently does not support GCC High login endpoints natively like it does for Azure Commercial.

The client attempts to authenticate using login.microsoftonline.com instead of the GCC High endpoint login.microsoftonline.us.

As a workaround try to use Web Feed with Pre-authenticated Workspace

If you're using WVD or AVD:

Try to get an RDP file directly from the admin or from the web client (https://rdweb.wvd.azure.us/arm/webclient/index.html) after authenticating manually in a GCC High browser session.

Open that .rdp file with the Mac client without relying on workspace feed authentication.

Or you can use Windows RDP Client in a VM or Bootcamp :

• Use a Windows VM (locally or in Azure) to connect using the Windows Remote Desktop Client, which does support GCC High.
• Alternatively, run Parallels or Bootcamp with Windows to use the official RDP client.

Another alternative, if AVD is in use, try connecting via browser at: https://rdweb.wvd.azure.us/arm/webclient/index.html

This works for GCC High and doesn’t rely on the native Mac RDP client.