Under certain circumstances, it may happen that the manual uninstallation of Avira Antivirus does not work on Mac OS Sierra. Though the uninstaller displays a quick finishing of the uninstallation, the Avira software still remains installed.
- Open Applications in Finder.
- "Drag&Drop" the Avira application to Trash.
- The uninstallation process starts and Avira Antivirus for Mac will be uninstalled correctly.