To uninstall Avast Security via the menu bar, follow the detailed steps in the Preferred section. To uninstall Avast Security via the setup file, follow the detailed steps in the Alternative section.
Deleting or moving Avast Security to the Trash does not uninstall the program.
Uninstallation instructions
- Click the Avast Menu bar
icon and select Open Avast from the context menu. 
- Click Avast Security in the Menu bar on the top-left of the screen and select Uninstall Avast.
- Click Uninstall.
- Select additional security products to uninstall and click Continue.
- If prompted, use your Touch ID or enter your administrator User Name and Password and click OK to grant permission for the uninstallation.
- Click Quit.
- Download the Avast Security for Mac setup file by clicking the button below and save it to a familiar location on your Mac. Download Avast Security
- Double-click the downloaded setup file
avast_security_online.dmgand select Uninstall Avast.
- Click Uninstall.
- Select additional security products to uninstall and click Continue.
- If prompted, use your Touch ID or enter your administrator User Name and Password and click OK to grant permission for the uninstallation.
- Click Quit.
After any open applications are closed, the uninstallation is complete and Avast Security is removed from your Mac.
- Avast Security 13.x for Mac
- Avast Security Pro 13.x for Mac
- Apple macOS 10.14.x (Mojave)
- Apple macOS 10.13.x (High Sierra)
- Apple macOS 10.12.x (Sierra)
- Apple Mac OS X 10.11.x (El Capitan)
- Apple Mac OS X 10.10.x (Yosemite)