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

This comprehensive technical guide outlines the best, proven troubleshooting steps to resolve the error across Windows 10, Windows 11, and Windows Server environments. Direct Comparison of Quick Fixes

: Antivirus software or Windows Defender Firewall may be blocking the connection on either the source or destination.

If you are using an Azure Virtual Machine, a corrupt certificate store may prevent RDP from creating new certificates : Use the Azure Portal's Run Command feature to execute a PowerShell script: This comprehensive technical guide outlines the best, proven

On the client computer, navigate to Applications and Services Logs -> Microsoft -> Windows -> TerminalServices-ClientActiveXCore -> Operational . Look for Event ID 1026 (RDP Client ActiveX disconnection) or Event ID 226 (RDPClient_SSL state transition error). These logs provide low-level clues about handshake failures.

Set to Enabled → Choose "RDP" (not SSL/TLS) Look for Event ID 1026 (RDP Client ActiveX

: Ensure both Remote Desktop and Remote Desktop (WebSocket) are allowed for both Private and Public networks.

An identified bug where the native client drops connections made via hostnames rather than raw IP addresses. Comprehensive Troubleshooting Matrix An identified bug where the native client drops

occurs when an RDP client fails to negotiate a secure transport-level connection with a remote host.

On the (your machine):

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Back up your registry first.