https://bugs.winehq.org/show_bug.cgi?id=56830
--- Comment #3 from Sven Grewe svengrewe@posteo.de --- I can only guess but the EXE would do some pre-install magic if I remove Mono too early and don't have .Net Fx 3.5. It would then get other (down-)loading windows popped up and also complain similarly to what I can see in Win10 without .Net Fx 3.5