Green Pixelation in When Resizing RDP Window in Windows App

Try this:

1. Verify Driver Compatibility
•    Only use Microsoft-published AMD drivers for NVv4/NV8as v4 VMs.
•    Recommended versions: 20.Q4-1 or 21.Q2-1 for Windows builds up to 1909.
•    Avoid installing drivers from AMD’s public site—use the AMD GPU Driver Extension or manually install the .inf files from the extension package.
2. Disable WDDM Graphics Redirection
•    Go to Group Policy: 
•    Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment
o    Set “Use WDDM graphics display driver for Remote Desktop Connections” to Disabled.
o    This forces RDP to use legacy rendering, which may eliminate pixelation.
3. Force GPU Rendering Settings
•    Enable GPU acceleration via Group Policy or Intune: 
o    Set “Use hardware graphics adapters for all Remote Desktop Services sessions” to Enabled.
o    Also enable H.264/AVC or HEVC/H.265 encoding if supported.
4. Try Fixed Resolution
•    Instead of dynamic resizing, set a fixed resolution for the RDP session.
•    You can do this via .rdp file or Windows App settings.
5. Use Web Client or Remote Desktop Client
•    If the issue persists in the Windows App, try accessing the VM via the AVD Web Client or Remote Desktop Client for Windows. These may handle resizing differently.