I understood that MCPR Removal Tool removed all vestiges of McAfee but some users have reported that some registry entries remained afterwards.
Make sure you are using the latest version from HERE.
Reboot afterwards and run it a second time if necessary.
The only other solution would be to go into the registry editor and remove entries manually.
Go to Start/Run and enter regedit and click OK.
A page should open with the top left hand corner looking like this:
If for some reason it's expanded, collapse it and then highlight My Computer (Computer in Vista/Windows 7).
Go to File tab and click "Export" and send all of the registry to your desktop. This is in case something goes wrong. It can then be rebuilt by simply right-clicking that desktop item and selecting Merge.
Now click the Edit tab and then "Find". Enter "McAfee" (minus the "") then click "Find next" (or hit the enter key).
Whatever is found, right-click and delete.
Hit your F3 key for the next instance and keep going until all entries are gone.
If one says it can't be deleted this is where it gets complicated. You have to then find which key on the left column pertains to it and right-click/Properties/Permissions and give yourself permission.
Ok. crystal clear Thank you.
You're welcome and good luck ;-)