If you are unable to uninstall your antivirus or security software via your Control Panel, you have the option of using the uninstallers released by the antivirus companies to uninstall their own security software. Alternatively you can also try AppRemover to uninstall your security software.
However, there is now also available a AntiVirus Uninstaller Tools Pack 2011 which includes official uninstallers released by the antivirus companies.
It is a free package of official utilities released by the respective companies, to remove various antivirus programs. The pack includes tools to remove over 30 antivirus, anti-spam, anti-spyware software and firewalls viz avast!, AVG, Avira, BitDefender, BullGuard, CA, Comodo, Dr Web, eScan, Eset, F-Prot, F-Secure, G Data, K7, Kaspersky, Max, Malwarebytes, McAfee, MSE, Norman, Norton, nProtect, Outpost, Panda, PC Tools, Prevx, QuickHeal, RadialPoint, SpamFighter, Sunbelt, SUPERAntiSpyware, Trend Micro, Vexira, Vipre, VirusBuster, Webroot, OneCare, Zondex and ZoneAlarm.
In the left panel click on English to select English language UI. Click on the software you want to uninstall and then click on OPEN. The folder containing its uninstaller will open. Run the tool to uninstall the program.
AntiVirus Uninstaller Tools Pack download
You can download it from its home page.