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ERROR_CTX_INVALID_PD
ERROR_CTX_INVALID_PD indicates that Remote Desktop Services rejected the configured protocol driver. This is normally a host-side configuration or component problem, not a user credential failure.
What to check
- Check the first TerminalServices and System event that appeared before this code; it often identifies the driver or listener that failed to initialize.
- Verify that the Remote Desktop Services role and its supported components are installed consistently on the host.
- Do not copy driver files from another server; repair the supported Windows installation or revert the configuration change that introduced the mismatch.
Get-Service TermService, SessionEnv, UmRdpService
Microsoft: Remote Desktop Services system error codes
Microsoft: Troubleshoot Remote Desktop disconnected errors
Microsoft: Remote Desktop Services overview
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