I had McAfee Security which recently expired. I purchased a copy of Total Protection 2010 from Best Buy and installed. When I am prompted for the product key I am being told it is an invalid key. I am running Windows XP, tried uninstalling all McAfee and Reinstalling Total Protection. Same thing Any help would be appreciated?
You should also use the MCPR removal tool found at the top of this page under Useful Links. Sometimes the normal uninstall under Add/Remove programs does not completely uninstall the software completely. Reinstall your software and follow the registration procedure again.