I recently did a clean install of Windows 7 on my machine. My key is for Windows 7 Professional, but I mistakenly installed Home Premium onto the machine. I've spent a day installing my various bits of software and settings, so I'd like to upgrade the system to Professional without having to reinstall, ideally. When I look at Anytime Upgrade options, it expects me to have to purchase an upgrade key. As the system stands, it has no key and has not been activated.

Is there any way I can use my Professional key to perform an upgrade to Professional without a full reinstall?



Just use the Anytime Upgrade, when it asks for a key, use your retail key.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.