NTSTATUS 0xC00A0015 (STATUS_CTX_WINSTATION_NOT

Status / error code:

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Constant name:

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Operating System:

Description:

The target Remote Desktop Services session no longer exists on this host.

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STATUS_CTX_LICENSE_EXPIRED	STATUS_CTX_WINSTATION_NAME_COLLISION

STATUS_CTX_WINSTATION_NOT_FOUND

The operation targeted a session that the host cannot find

STATUS_CTX_WINSTATION_NOT_FOUND identifies a missing Remote Desktop Services session. A session ID can disappear after logoff, reconnect to another host, broker redirection, or server restart; a cached ID is not a durable identity for later administration.

This differs from access denied. The server is saying that it has no matching session to authorize or control, so adding permissions cannot make the stale target reappear.

Useful evidence

Enumerate sessions on the target RD Session Host immediately before the operation and log the host name as well as the session ID.
Correlate the user, session state, logoff/disconnect events, and any broker redirection decision to determine whether the session ended or moved.
Make management automation tolerate a missing session as a normal race when logoff, disconnect, or failover may happen concurrently.

References

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