Hello @Fused Technology Solutions
Adding an answer for the benefit of community users, also, in case you still see this issue on any of the VMs
First, let's make sure that the user account you're using to log in has been assigned to the correct application group. You can confirm this by running the following command in PowerShell
Example
Get-AzRoleAssignment -ResourceGroupName testRG -SignInName ******@contoso.com
This command will return the role assignments for the user, which should include the Desktop Application Group that you've created.
Ref: https://learn.microsoft.com/en-us/powershell/module/az.resources/get-azroleassignment?view=azps-10.4.1
If the user is assigned to the correct group, then let's check if the user is signing in with the correct credentials. Double-check the username and password to ensure that they are correct. You can also try resetting the user's password to see if that resolves the issue.
If the web client is being used, confirm that there are no cached credentials issues. You can try clearing the browser cache and cookies or try using a different browser to see if that resolves the issue.
If the issue persists, it's possible that there may be an issue with the Azure Virtual Desktop service. You can check the Azure status page to see if there are any known issues affecting the service. If there are no known issues, you can try reaching out to Microsoft support again for further assistance.
I hope this helps! Let me know if you have any other questions or concerns.