Forum Discussion
Green Pixelation in When Resizing RDP Window in Windows App
I'm experiencing an issue with Azure Virtual Desktop running on a Standard NV8as v4 VM. When I resize the RDP window using the Windows App, the session displays green pixelation artifacts, especially during or immediately after the window size change. The VM uses the AMD Radeon Instinct MI25 GPU, and I've tried updating and uninstalling the GPU driver, as well as installing the AmdGpuDriverWindows Extension but the issue persists.
1 Reply
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.
