Windows Enterprise activation error after Microsoft 365 E3 license upgrade

Windows 11

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Dec 10, 2024
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We have an issue with a computer connected to Azure AD, after a user account had their licence upgraded to Microsoft 365 E3 from Office 365 E3, Windows upgraded itself to Windows 11 Enterprise from Pro, and now it has failed activation.Please help us troubleshoot why Windows has failed activation.Troubleshoot says make sure you are connected to the Internet, but the device obviously is.

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