Code 0x904 Install | I Remote Desktop Connection Error

If standard RDP remains broken, consider using alternative remote access tools like AnyViewer or the Microsoft Remote Desktop app from the Microsoft Store, which can sometimes bypass legacy protocol errors.

How to Fix Remote Desktop Connection Error Code 0x904 The (often accompanied by extended error code 0x7) is a common issue in Windows 10, 11, and Windows Server environments. It typically signifies a failure to establish a secure TLS tunnel, often due to expired RDP certificates , unstable network connections , or firewall misconfigurations . 1. Renew Expired RDP Certificates

Execute: Rename-Item -path "C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys" -NewName "MachineKeys_old" . i remote desktop connection error code 0x904 install

Access the VM via the Azure Portal and select Run command > RunPowerShellScript .

Go to "Allow an app through Windows Firewall" and ensure both Remote Desktop and Remote Desktop (WebSocket) are checked for Private and Public networks. If standard RDP remains broken, consider using alternative

Ensure your VPN provides sufficient bandwidth and isn't dropping packets.

Reboot the server. This forces the system to recreate the necessary key folders. 3. Verify Firewall and Security Settings Go to "Allow an app through Windows Firewall"

Use PowerShell to ensure port 3389 is open: Test-NetConnection [server_name] -Port 3389 . 4. Network and VPN Stability

Windows will automatically generate a new, valid self-signed certificate upon restart. 2. Fix Certificate Corruption (Azure VMs)