I hope you are typing the product key in upper case.....! If not please key in the product key in upper case & then try to activate your McAfee subscription. Good luck
McAfee Technical Support
Hi Rakesh, thank you for answering, but that's not the problem, I did it in upper case and it's not working! It's not working on the other computer either...
Try contacting technical support chat through http://service.mcafee.com/LocaleSelect.aspx?lc=1033&sg=TS&pt=1&st=CHAT , they will be able to help you in activating your programs.
That's exactly what I did and now my problem is solved.