Hey, same problem here, I created another thread but moved here to keep all the info in one place. I'm running Windows 10 with Avast program version: 20.6.2420 (build 20.6.5495.588) and Virus definitions version: 200818-0. I already tried running the Avira cleanup tool suggested here, I also did the whole safe cleanup and offline reinstall procedure, yet I still get the same problem turning on the pc or restarting it. Sometimes it'll be the behavior shield being turned off, other times the ransomware one. Any suggestions? Is it just the last version of Avast? I also ran a full scan to check for any malware turning off the shields, but it found nothing.