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How do I tell what Microsoft OS corresponds to a key

Fresh3 days ago
Mar 15, 2026959 views
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Problem

I have an old computer whose hard drive is wiped. The Microsoft product key is on the back, but there is no reference to which OS it is. I know it must be some flavor of XP -- is there any way to find out which one?

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Fix for: How do I tell what Microsoft OS corresponds to a key

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According to this article : Product IDs Microsoft uses various Product IDs to identify variants of the Windows platform. A Windows product ID (currently, as of XP/2003/Vista) has the following format: xxxxx-yyy-zzzzzzz-zzzzz The xxxxx section is the…

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