AVG (software) - Problems

Problems

  • When uninstalling AVG version 7 or 8 in Windows XP/Vista and attempting to install other anti-virus programs such as Kaspersky Anti-Virus or Norton AntiVirus, the latter programs will not install. Instead, they show an "incompatible software installed" error even if the uninstalled software has been removed using the control panel. This happens because software that updates and changes can add registry entries that were not added when the product was originally installed (therefore the uninstaller is unaware of the registry keys).
  • A signature update dated November 9, 2008, crippled some computers, as it allowed the software to treat "user32.dll", a major component of Windows XP/Vista, as a trojan and advised users to delete it. Users who deleted the file in question were put on a continuous reboot loop. The problem was rectified a few days later with a new signature database and further safeguards were added to the product (270.9.0/1778).
  • When users tried to install the Windows 95/98/NT 4/2000/ME 3d maze screensaver on XP/Vista/7, AVG would treat the screensaver as a high level threat and advised users to move to vault, this problem was fixed in an update in AVG 2012
  • Towards the end of July 2009, a software update caused the program to inform users that iTunes was infected with a non-existent virus, Small.BOG. If users followed the recommended instructions, it would remove critical DLL files and corrupt the iTunes installation.
  • An update of AVG 2011 resulted in Windows 7 64-bit systems being caught up in a continuous reboot loop. The update has now been removed.
  • After installing AVG or other seemingly irrevelant software, Chrome/IE browser's homepage is changed to isearch.avg.com. The change is difficult to revert, especially with Chrome even if the software is removed from the system.

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