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ERROR_CTX_WINSTATION_ALREADY_EXISTS
ERROR_CTX_WINSTATION_ALREADY_EXISTS means a session or listener with the requested name already exists on the host. This is normally a naming collision during RDS configuration or automation, not an authentication failure.
What to check
- List current sessions/listeners and identify the object that already owns the name.
- Check whether a previous configuration attempt completed only partially.
- Use a unique listener or session name in deployment scripts; do not remove an existing session merely because its name collides.
qwinsta /server:rd-session-hostMicrosoft: Remote Desktop Services system error codes
Microsoft: qwinsta / query session
Microsoft: Remote Desktop Services command reference
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