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lowWindowslearn_purview · Sep 12, 2026
The activation server determined the specific product key has been blocked. - Microsoft Q&A
A user is experiencing issues with their Windows activation, receiving a message that the copy of Windows is not genuine. This issue may be due to product key restrictions or activation server blocks.
“After several month away I return home and begin using my computers like I always have in the past and after about 30 minutes the screen goes black and then gives me a window telling me this copy of windows is not genuine which is pure BS. I try the computer in my man-cave and begin working on my files and after abou…”
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endpoint_security
Audience
end_user
Environment
on_premises
Classification confidence: 85%
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