Ban small red umbrella (Avira AntiVir) pop-up ads

Enter "Gpedit.msc" in the run, then expand Windows settings → security settings → software restriction policies → other rules, right-click in the right window and select New path rule. Then browse to this file:

X:aviraantivir Desktopavnotify.exe

The security level defaults to "not allowed." And this file "X:aviraantivir Desktopavnotify.dll" also deal with the same. This is the latest version of the small red umbrella two file path. The old version of the word, the path is similar to find Avnotify.exe and avnotify.dll forbid off on the line.