Thanks a lot Flakmonkey

This is another of those darned things one would not have guessed in a million years. Avast apparently has automated action as default and consequently I was not aware that it had quarantined stuff without asking my permission. I just can't believe it. How can a program be programmed in a way that it does stuff like that by default

When software developers treat the users as idiots this kind of bs happens.
Actually it was me who was an idiot, not checking Avast for automated actions... Never trust any program not to treat you as an idiot