: This is not a standard flag for the Windows shutdown command. It likely refers to a user-defined comment or a specific context in a third-party automation script. In a standard command like shutdown /s /t 3600 /c "exclusive" , the text "exclusive" would simply appear as a notification message to any logged-on users. Key Technical Effects
Key elements interpreted
shutdown /t 3600 without /s does nothing. The timer requires an operation flag. shutdown s t 3600 exclusive