Convert MSDN Windows 7 Enterprise installation to Ultimate

Posted by stimms on Super User See other posts from Super User or by stimms
Published on 2009-09-16T18:15:19Z Indexed on 2011/06/30 0:24 UTC
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When reinstalling Windows 7, does the language, version, architecture (64-bit or 32-bit) or source (OEM, retail, or MSDN) matter?

Unthinkingly I installed Windows 7 Enterprise on my development box at work rather than the Ultimate version. Now windows is complaining that it is unable to activate because it can't contact a KMS (Key Management Service) which my company doesn't have.

Is there any way to change this install such that it believes it is Windows 7 Ultimate and will take an ultimate key? I have MSDN so the licensing is not an issue.

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