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How to Upgrade Windows Vista Ultimate to Windows 7 Enterprise
Microsoft does not officially support this, however, you can change the following registry keys to make the Windows 7 Enterprise installer believe it is updating a Windows is Business / Enterprise. 1) Go to start run type “regedit” and hit enter2) Navigate to HKEY_LOCAL_MACHINE->Software->Microsoft->Windows NT->CurrentEdition3) Right click on EditionID and change from Ultimate to Enterprise4)…