Access the remote server locally or via an alternative method.
Sometimes security software like or Bitdefender starts blocking RDP unexpectedly. i remote desktop connection error code 0x904 install
: Log in locally (or via another remote tool) and open the Certificates manager ( certlm.msc ). Under Remote Desktop > Certificates , you find the expired one, delete it, and restart the Remote Desktop Services. Windows then automatically generates a fresh, valid certificate. Access the remote server locally or via an
Even if RDP is "enabled," your firewall might still be blocking specific traffic types needed for the connection. Under Remote Desktop > Certificates , you find
Log into the affected server locally or via an alternative remote tool. certlm.msc
: If the server is dropping requests, you can increase the MaxOutstandingConnections in the registry at HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server . Troubleshooting the "Dodgy" Connection
Access the VM via the Azure Portal and select Run command > RunPowerShellScript .