Remote Desktop Connection Error Code 0x904 Extended Error Code 0x7 //top\\ 99%

In the Microsoft Remote Desktop Protocol (RDP) stack, indicates that a lower-layer communication or initialization protocol was forcefully terminated. The Extended Error Code 0x7 narrows this down, specifying that the termination occurred during the pre-connection negotiation phase—specifically during the TLS/SSL handshake or Network Level Authentication (NLA) verification.

or the built-in Windows Firewall can block the connection, especially after a Windows 11 upgrade. Whitelist the App Windows Security Firewall & network protection Allow an app through firewall Remote Desktop is checked for both Private and Public networks. Manual Exception C:\Windows\System32\mstsc.exe as an exception in your third-party antivirus. 3. Stabilize the Network Connection

If there is a mismatch in encryption ciphers between the client and the host, the connection may drop immediately. In the Microsoft Remote Desktop Protocol (RDP) stack,

Log into the host locally, open the Certificates MMC snap-in ( certlm.msc ), and navigate to Remote Desktop > Certificates . If the certificate is expired, delete it and restart the Remote Desktop Services ( termserv ) to force Windows to generate a new one.

The single most common cause for this error on standalone or enterprise Windows Servers is an . Windows generates these automatically, but they can silently expire or fail to renew, causing immediate connection rejections. Whitelist the App Windows Security Firewall & network

Restart the service to generate a new one: Open Command Prompt as Admin and run: net stop termservice then net start termservice .

If using the Microsoft Remote Desktop app from the Microsoft Store, check for available updates. Stabilize the Network Connection If there is a

> Who is trying to connect?

: Network Level Authentication blocking the connection credential exchange.