I have problem with my Avast Free Antivirus 7.0.1474. The real time shield/web shield is off, i tried to on and fix but nothings happen. i also reboot and try to quick scan with malwarebytes pro but no luck same result.
Go to settings at the top op the Avast window. Choose Troubleshooting menu at bottom of list and reset to the factory settings. This solved the problem for me.