You are not able to activate the Windows 10 license with Windows 11 product key and you will need the license for the Windows 10.
In case you had Windows 10, and it was activated then if you upgrade to Windows 11 and it remains activated, then you may use the Windows 10 license to activate Windows 11 (in case of upgrade only) and normally it won't ask for product key and will just activate it from the server.
Windows 10 Pro: Activate using Windows 11 Pro license key, but stay on Windows 10?
Brandon Turner
1
Reputation point
We recently had a device that we've installed Window 10 Pro onto, but we need a license to activate it. If we purchased a Windows 11 Pro Downgrade license key, would that force us onto Windows 11, or would we remain on Windows 10? I tried looking this up, but couldn't find any info on this specific issue.
Many thanks,
1 answer
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Reza-Ameri 16,961 Reputation points
2022-09-15T16:31:25.023+00:00