Error code 0xC000000D is a Windows status code associated with an invalid parameter or argument. In the Remote Desktop failure described here, it appeared with the message “The token that was passed to the function is invalid.” The code identifies an error condition; by itself, it does not explain the root cause or indicate that an attack occurred.
For defenders, this code can help correlate user reports with Windows logs and troubleshooting data. When it occurs during a Remote Desktop connection, administrators should check the affected Windows version, update status, account privileges, and relevant security settings, then test whether the failure is reproducible. Such errors can signal an availability or compatibility problem, which may interrupt support and administration workflows. They should be investigated without treating a failed connection alone as evidence of compromise.