If your Windows 10 I actually recommend dropping the virus scanner entirely.
I've discovered a hilarious new bug in Avira and Avast, both got silently hosed by Creators update for the former, and fall creaters for the latter. Both appeared to be running, but couldn't actually scan and needed a reinstall. On both machines I hadn't noticed. Viruses just aren't really something that is preventable by antivirus anymore. All virus scanners really do anymore is slow down your disk access, and Intel is already seeing to that, so why have an additional virus scanner?
Even better, you can just reset Windows 10 and keep all your programs and settings and files, but dump the virus.
He who stumbles around in darkness with a stick is blind. But he who... sticks out in darkness... is... fluorescent! - Brother Silence