Hello.
Thank you for giving your question.
To provide the most precise guidance, could you please specify which Windows Update (KB number) or Remote Desktop app version was installed just prior to this issue occurring? You can find this in Settings > Windows Update > Update history.
In the meantime, please find the recommended resolutions below:
- Cache Clearance
Before proceeding with a downgrade, it is highly recommended to clear the client's local metadata, as "No Workspaces" freezes are frequently caused by corrupted cached discovery files.
Clear App Cache:
Navigate to: %LOCALAPPDATA%\Packages\Microsoft.RemoteDesktop_8wekyb3d8bbwe\LocalState (for the Store version) or %LOCALAPPDATA%\rdclientwp (for the MSI version).
Delete the contents of these folders. Note: You will need to re-subscribe to your workspaces afterward.
Toggle UDP: Recent patches have occasionally broken the RDP-over-UDP transport.
Open Group Policy Editor (gpedit.msc).
Go to: Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Connection Client.
Set "Turn Off UDP On Client" to Enabled.
- Downgrading the Software
Depending on which version of the client you are using, the rollback method differs significantly.
Option A: Remote Desktop Client (MSI / MSRDC)
If you are using the standalone installer (typically for Azure Virtual Desktop or enterprise environments), you can manually install a previous release.
Uninstall the current version via Control Panel > Programs and Features.
Download a verified previous version (e.g., version 1.2.5623 or earlier) from the official Microsoft documentation:
Option B: Roll Back a Windows Update
If the issue was triggered by a Windows OS patch (Patch Tuesday March 2026), you can remove it:
Go to Settings > Windows Update > Update history > Uninstall updates.
Locate the most recent Security Update or Cumulative Update and click Uninstall.
After restarting, "Pause updates" for 7 days to prevent the immediate re-installation of the faulty patch.
If you prefer not to downgrade, many users find that launching the client with the /v: parameter via a shortcut or CMD directly to a specific host bypasses the "Workspaces" discovery hang entirely: mstsc.exe /v:your.server.address
If you find my answer useful, please mark it as the "Accepted Answer" so other members can find the solution easily. Your help in supporting the community is much appreciated!
Best regards,
Scott Nguyen