Running two anti virus products on the same computer can cause system instability, degraded performance and maybe the inability to identify a virus correctly. I have even heard of a case where someone managed to install as many as 3 anti virus on his computer and yet no problems. I would say he is just plain lucky and one day the anti virus will conflict and give so much trouble that he will not be able to recover Windows from the crash. It is very important that any previously installed anti virus software is uninstalled from your system before proceeding with the installation of the next anti virus that you would like to install.

The standard method of uninstalling an anti virus is from Add or Remove Programs but sometimes the uninstaller process would hang and you will not be able to remove the anti virus from your system. When this happen, you can try using the removal tool provided by the anti virus company to remove the installed anti virus. I always have a list of uninstallers for anti virus software on my USB flash drive. Here I am sharing with you guys my list and perhaps it could help you uninstall an anti virus program that you are having trouble uninstalling..

Most of the uninstallers below are very straight forward. Just download, run the file and click a button to proceed with the uninstaller. Some is a little more complicated and requires more steps which I have noted.

1. Avast Download avast! Uninstall Utility

2. AVG Download AVG Remover 32-bit | 64-bit

3. Avira Download Avira RegCleaner

4. BitDefender Download BitDefender Uninstall Tool 32-bit | 64-bit

5. Computer AssociatesDownload CA SupportBridge for 2008 | 2009 products

6. ESET Download NOD32Removal

7. F-Secure Download F-Secure Removal Tool

8. Kaspersky Download Kaspersky Anti-Virus Remover

9. McAfee Download McAfee Consumer Product Removal Tool

10. Windows Live OneCare Download Windows Live OneCare Cleanup Tool

11. Norton / Symantec Download Norton Removal Tool

12. G DATA Download G DATA AV-Cleaner

13. Panda Security Download Panda Security Uninstaller

14. Trend Micro Download Trend Micro Diagnostic Toolkit 32-bit | 64-bit

15. AppRemover Download AppRemover