May be:
Search: Search results for 'ucrtbase.dll' - Microsoft Flight Simulator Forums
one of the first results:
Thus… may be you should check as first what our @Hester40MT mentioned … before you start re-install - orgies or other things 
May be:
Search: Search results for 'ucrtbase.dll' - Microsoft Flight Simulator Forums
one of the first results:
Thus… may be you should check as first what our @Hester40MT mentioned … before you start re-install - orgies or other things