Slmgr Official

To mitigate these risks, Microsoft requires administrative privileges for any slmgr operation that modifies license state. Additionally, enterprise environments often restrict script execution via Group Policy (disabling cscript.exe or wscript.exe ) or deploy endpoint detection rules that alert on suspicious slmgr commands (e.g., multiple /rearm attempts).

If you are using an evaluation version of Windows (like Windows Server), you can reset the "grace period" timer: To mitigate these risks

cscript slmgr.vbs [MachineName] [User] [Password] [Option] To mitigate these risks