Hello,
Yes, it is possible to activate Windows 10 Enterprise using Azure AD join and E5 license even if the machine does not have any firmware embedded activation key.
Windows Enterprise E3 and E5 are available as online services through subscriptions. No keys and reboots are required to deploy Windows Enterprise in your organization.
This article describes how to deploy Windows Enterprise E3 or E5 licenses with subscription activation or Enterprise E3 in CSP and Microsoft Entra ID:
https://learn.microsoft.com/en-us/windows/deployment/deploy-enterprise-licenses?pivots=windows-11REF: https://learn.microsoft.com/en-us/windows/deployment/windows-subscription-activation?pivots=windows-11
Best Regards,
Hania Lian
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