If you are still struggling with removal using conventional ways, try booting your Windows into "Safe mode with networking" and try to uninstall Avira there or manual removal finding the files and registries manually and deleting them also works.
If you are still struggling with removal using conventional ways, try booting your Windows into "Safe mode with networking" and try to uninstall Avira there or manual removal finding the files and registries manually and deleting them also works.