Good afternoon auros,
If you may not be aware that the WebRep/AOS (Avast Online Security) currently have issues as of late. Disabling/uninstalling AOS won’t affect your computer security, because the Avast! Web Shield in the avast program will protect you from web threats and etc. We all have to wait for a permanent fix from the Avast! Team to fix this issue.
As for now, you can disable/uninstall the AOS. If you want to uninstall AOS via add/remove. Do this following! Go to add/remove>right click Avast> Click on change>uncheck browser protection. After that restart.