General: Uninstalling a third-party antivirus software

When and why a third-party antivirus software should be uninstalled?

If you want to install Avast antivirus software on your computer, please ensure that there is no other third-party antivirus software already installed, including expired or trial versions.

Having multiple antivirus programs installed on the same computer commonly results in conflicts, including false positive detections, performance degradation and system instability. Therefore it is strongly recommended to uninstall all other previously installed antivirus applications before installing Avast on your computer.

How to uninstall a third-party antivirus software?

Please click below the link associated with the currently installed antivirus software and follow the instructions on vendor's website to proceed with the uninstallation:

Typical uninstallation from the Control Panel in Windows can be insufficient in some cases. Some records may still remain in the system and prevent Avast from being correctly installed. Most vendors offer special removal tools to uninstall their antivirus software completely from the system. If there is mentioned an option to use removal tool in the instructions linked above, we recommend to use it for proceeding with the uninstallation.


All available Avast antivirus solutions

All available third-party antivirus solutions

Operating systems:

Microsoft Windows 8.1 / Pro / Enterprise
Microsoft Windows 8 / Pro / Enterprise
Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate
Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate
Microsoft Windows XP Home / Professional / Media Center Edition

Microsoft Windows Small Business Server 2011
Microsoft Windows Server 2008 (Any Edition, incl. Small Business Server, except Server Core)
Microsoft Windows Server 2003 (Any Edition, incl. Small Business Server)

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