I've uninstalled my last anti-virus software (AVG) and turned Windows Defender off. I have no other anti-virus software on my system, but Avast (free edition) refuses to leave Passive Mode. There is a notification saying, "More antiviruses on one PC can cause performance and security issues. For that reason our real time shields are now off. To fix this issue, please uninstall colliding antivirus programs manually." And when I go into settings/general/troubleshooting, the box you check to activate/deactivate passive mode is blacked out so that I cannot interact with it.
What do I do? Thanks in advance!