Remote Desktop Connection Error Code 0x904 Extended Error Code 0x7 Jun 2026

Rename-Item -path "C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys" -NewName "MachineKeys_old" the server from the portal. www.remoteaccesspcdesktop.com 4. Configure Firewall & Antivirus

A: Event ID 226 ( RDPClient_SSL State transition error, Error code 0x8000FFFF ) appearing alongside 0x904 indicates a catastrophic failure in the SSL/TLS handshake state machine, usually caused by cipher incompatibility or certificate corruption. Use Solution 6 to reset the SSL policy. Use Solution 6 to reset the SSL policy

This is the most common culprit in modern environments (Windows 10, 11, and Server 2016/2022/2025). When a Windows 11 client attempts to connect to an older server (or vice versa), the TLS (Transport Layer Security) versions or specific cryptographic cipher suites do not align. For example, a detailed look in the server’s Event Viewer under these circumstances shows the error: "An unknown connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The TLS connection request has failed". For example, a detailed look in the server’s