Issue with AVG 7.5, 8.0, 8.5 even on a fresh install of windows, upgrading to SP3 has license activation problems:
Here the issue is with AVG Free deactivating during an XP Sp3 upgrade. And upon reinstallation, the computer has issues ever fixing the problem. No matter what you do, the program will always return errors.
1 ] Trying to delete all the files manually proves no fruit. C:\Program Files\AVG is a hard little twerp to get rid of. CTRL-ATL-DEL should bring up the Process Montior, and anything with AVG in the process name also does not want to quit. Many forums on the internet seem to have this problem with no solution.
2 ] A good thing to do first is run the uninstaller that comes up when you start up. (Don’t quit Spybot, Ad-Aware..this can lead to problems[in the tray next to clock])
3 ] Then what you want to do is uninstall [START > CONTROL PANEL > ADD/REMOVE APPLICATIONS] Ad-Aware, Spybot Search&Destroy, or any other spyware/virus apps. Ones specifically dedicated to controlling files on your operating system like those are known to cause problems here. Personally, AVG needs to get on the bandwagon with better licensing, and installer application which is definitely crippled (though the software is grande)
4 ] Restart your computer.
5 ] Check for any processes related to those applications you just uninstalled. [CTRL-ALT-DELETE key sequence, then choose PROCESSES tab] and kill/end any that you see.
6 ] Again, uninstall AVG, and choose to remove user settings and anything in the vault. Restart/Uninstall until you get a successful uninstall with no errors. (more than 3 times, and there is something else wrong with your system.)
7 ] Upon successful uninstall, reinstall AVG [ download : AVG Free 8.5 http://download.cnet.com/AVG-Anti-Virus-Free-Edition/3000-2239_4-10320142.html?tag=mncol ] and several times with restarts if needed.