I found out yesterday that the last day my (daily scheduled) Avira scan completed successfully was the 12th. (I have it scheduled at a time when I'm normally out, so there are no interfering activities, so I didn't notice a problem immediately.) I attempted to run it manually, and every single time I get an error message around 14% of the standard local drives scan (quick scan works fine). Today, sure enough, the scheduled scan failed again. I run Win 8.1 pretty smoothly, and nothing has changed in my settings since the 12th. Any insights?