Remote Desktop Connection Error Code 0x904 Extended Error Code 0x7 ((hot)) Full -

Temporarily set to RDP and disable Network Level Authentication (NLA) to test for encryption compatibility.

The RDP client established a TCP connection, but during session negotiation or encryption handshake, the remote server’s network stack or RDP service sent a TCP RST (reset) packet, and the local client’s network buffer management entered an invalid state. Temporarily set to RDP and disable Network Level

. It is frequently linked to unstable network conditions, expired security certificates, or compatibility bugs in newer Windows versions (like Windows 11). Most Common Causes Unstable Network/VPN It is frequently linked to unstable network conditions,

If the above fails, you can manually reset the RDP security provider via the Registry. Corporate firewalls (like Zscaler, Blue Coat, or FortiGate)

: Enforce the policies by running gpupdate /force in a terminal window, then reboot the endpoint.

Corporate firewalls (like Zscaler, Blue Coat, or FortiGate) performing SSL inspection can modify the RDP-over-HTTPS traffic. They replace the RD Gateway’s certificate with their own, breaking the RDP protocol’s strict expectations.

Set it to and choose RDP (or Negotiate if RDP fails). Apply changes and restart the computer. 4. Check for Network Issues If the above do not work, consider the network environment.