Click on and temporarily uncheck Require computers to use Network Level Authentication (NLA) to connect to see if this resolves the barrier. 2. Configure Windows Defender Firewall
The most frequent cause for specific servers failing while others work. Windows generates self-signed certificates that don't always auto-renew.
Error code 0x904 is not a hardware failure or a simple network glitch. It’s a , and fixing it requires targeted changes to CredSSP, Group Policy, or the RDP security layer.
Right-click the right pane, select , and name it fClientDisableUDP . Double-click it, change the Value data to 1 , and click OK . Alternative: Consider a VPN or Modern RDP Alternatives i remote desktop connection error code 0x904 better
Click on Select users that can remotely access this PC within the same menu. Verify your specific user account is explicitly listed.
Recent updates have introduced hostname resolution bugs.
Once you have resolved the error, a few preventative configurations can stop it from returning: Click on and temporarily uncheck Require computers to
: Unstable local connections drop RDP handshakes. Use Ethernet if possible.
Sometimes error 0x904 happens because your previous session is trapped in a "ghost" or disconnected state on the host machine, refusing to let your new connection take over.
Follow these troubleshooting steps in order, moving from the simplest fixes to more advanced network configurations. 1. Verify Remote Desktop Settings on the Host PC Right-click the right pane, select , and name
Type in the Windows start menu search bar and open it. Select Windows Credentials . Scroll down to the Generic Credentials section.
Before tweaking network settings, ensure the target computer is actually configured to accept remote connections.