Reboot the VM. The system will recreate the folder and the necessary keys upon startup. 3. Advanced Firewall & Anti-Virus Exceptions
The most common cause for error 0x904 is an expired self-signed certificate that the Remote Desktop Service uses for encryption.
Troubleshooting Remote Desktop Connection Error Code 0x904 Remote Desktop Protocol (RDP) is essential for modern IT management, but encountering (often accompanied by extended error code 0x7) can bring productivity to a halt. This error typically signifies a failure to establish a secure Transport Layer Security (TLS) tunnel, often due to certificate issues, firewall blocks, or network instability. i remote desktop connection error code 0x904 better
Run Test-NetConnection [ServerIP] -Port 3389 in PowerShell to confirm the port is reachable. 4. Workarounds for Windows 11 Compatibility
Go to "Allow an app through Windows Firewall," click Change settings , and ensure both Remote Desktop and Remote Desktop (WebSocket) are checked for Private and Public networks. Reboot the VM
Go to the Azure Portal, select your VM, and choose .
Windows will automatically generate a new, valid self-signed certificate. 2. Resolution for Azure Virtual Machines (VMs) Advanced Firewall & Anti-Virus Exceptions The most common
Log into the affected host locally or through an alternative remote tool.
If encryption mismatches are suspected, you can force the server to use a specific security layer via the Group Policy Object (GPO). Unable to RDP into some Windows Servers - Error code: 0x904