A possibility to consider, with a lot of "if's" involved. If your original product was pre-installed by the manufacturer of your computer, and if you didn't activate your new subscription before uninstalling the old one, see the "Important Note" in the document, which contains the download for the MCPR tool. I question whether the above, would manifest itself, with a "failed" error.
Another "if". If your failure error is unrelated to the above, I'm sure Grif will see your post and know why. He's our resident McAfee expert. The McAfee Support forum is in the process of being upgraded, and is supposed to be back up tomorrow. No doubt there would be some information to be had there. With that said, I'm sure Grif will be able to help, once he sees your post.
Best of luck..
I've been happily using McAfee for at least 8 yrs -- no problem installing-- runs fine.
I have a new McAfee Anti Virus Plus 2010 ("protects up to 3 PC's"), and tried to install it 4 different times. It looked for old programs, cleared them out, and then installed itself-- but.....Each time the install finished it came up as "Failed". I downloaded and ran the suggested McAfee utility (from their website) and it cleared my IP stack and DNS cache ("to resolve issues which may be caused by malicious software or incorrect configuration") Everything was cleared-- I tried to reinstall McAfee and again, got the "Failed" messages.
So I went back to my McAfeee 2009 -- it installed just FINE and is running just FINE.
Why can't I install McAfee 2010???