Remote Desktop Connection Error Code 0x904 Extended Error Code 0x7 |link| -

The is a common Windows error that occurs when a Remote Desktop Protocol (RDP) connection fails during the handshake or secure tunnel establishment phase. This error typically signals a combination of network instability, expired or corrupted RDP transport certificates, or strict security configuration mismatches (such as Network Level Authentication) between the client and the remote host.

Right-click it, select , and ensure the NETWORK SERVICE account has full "Read" and "Write" permissions.

By methodically working through these solutions, you can resolve the frustrating 0x904 / extended error 0x7 and restore reliable remote access. The is a common Windows error that occurs

Mismatched encryption settings between Windows 11 and older Windows Server builds frequently cause this handshake crash. Adjusting Group Policies on the host computer forces a stable protocol negotiation.

To avoid seeing 0x904 / 0x7 again:

If the profile is correct, the specific RDP rule may be disabled in Windows Defender Firewall.

Unlike general credential validation failures, error 0x904 with extended code 0x7 highlights broken multi-transport routing, severe network packet loss, misconfigured Network Level Authentication (NLA), or corrupted secure sockets/certificates on the host server. Technical Breakdown of the Error By methodically working through these solutions, you can

Look for the certificate issued to the computer's hostname and check its .

First, confirm that the network path between the two devices is functioning. To avoid seeing 0x904 / 0x7 again: If

: On virtual machines (such as Azure VMs), the system's RSA MachineKeys directory can become corrupt, preventing the RDP service from reading or creating necessary private keys.