Answer by surfasb for How can I downgrade Windows 7 Ultimate to Home Premium?
You cannot downgrade editions. You need to re-install the operating system using the correct edition, then you can use that key.You can go up in editions using anytime upgrade.Edit:Bonus Chatter:The...
View ArticleHow can I downgrade Windows 7 Ultimate to Home Premium?
How can I downgrade from Windows 7 Ultimate to Home Premium without reinstalling Windows? I want to use a Home Premium key and uninstall the Ultimate features. How can I do this?
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