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I need to get a laptop with Vista Home Premium onto a domain, which requires Business or Ultimate. The computer, with Home Premium, is already registered for the free Windows 7 upgrade. If I upgrade the Vista version now via Microsoft's 'anytime upgrades', will the Windows 7 upgrade allow me to maintain the same class of service, or will it be a home version, forcing me to buy another upgrade?

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up vote 4 down vote accepted

Unfortunately, you will only get Windows 7 Home Premium edition out of the free upgrade.

You will then need to do the anytime upgrade to Windows 7 Professional to be able to join it to a domain.

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Hmm yeah, the free upgrade is tied to the OEM key that you got with the laptop. So... if you were to buy a Vista-Vista upgrade, you would get a separate key (which would then not be eligible for the free upgrade). – Kez Aug 21 '09 at 19:17
Dell does have an W7 upgradeable version of Vista Home Pre., so I'm not out of luck, just out an extra $41. – Justin Love Aug 21 '09 at 19:44

You need Windows Vista Business in order to upgrade to Windows 7 Professional. See the following list for all paths:

* Windows Vista Home Premium -> Windows 7 Home Premium
* Windows Vista Business     -> Windows 7 Professional
* Windows Vista Ultimate     -> Windows 7 Ultimate
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