Using the Windows Activation troubleshooter - Microsoft Support
https://support.microsoft.com/en-us/windows/using-the-windows-activation-troubleshooter-d717cdff-cf19-9770-7198-40119c2a696c
WebActivation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. If you're unable to activate Windows 11, the Activation troubleshooter could help. To use the troubleshooter, select Start > Settings > System > Activation , and then select Troubleshoot .
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