I have this weird problem with avast, free version. All settings stock, only file shield installed. When downloading and opening eicar test file avast does not show any message/warning. When right clicking to do a on demand scan it detects it's immediately. Apparently real time protection does not detect anything. What the hell can cause this? Any recommendations? I already did a reinstall and it did not fix is. I dunno how I can fix this.. Edit: weird 5 minutes after executing eicar.exe avast finally pop-ups with a message saying it deleted it. So massive delay between executing and responding it seems.