I have a licensed copy of McAfee. I have been getting a warning - your computer is at risk.
I tried McAfee Virtual Technician, but it could not resolve the issue.
Then I unstalled McAfee and ran MCPR utility.
However, I am not able to install McAfee now. I get the message - you must restart your computer before installing McAfee products.
I have restarted more than 2 times, still I am unable to install.
Well you have two choices. Contact Technical Support and have them deal with it. It's free by phone or online chat and linked under Useful Links at the top of this page or you can try the rather long and laborious registry cleanup which may or may not allow a fresh installation to occur.
I'm tending to favour the Technical Support choice...if I were you.
Please go to Start> All Programs> Start up.
You will find a file containing Mcreboot in the name. Delete the file and try running the installation.
If you are unable to delete or the issue persists even after that then try to install McAfee in a new User account. You can delete the new user account after installation.
If that even doesn't work, please let know... Have few other work arounds.