I've never personally seen issue with ucrtbase.dll , is this the only event that you see in the Event Viewer when the software crash ? Do you see any other event complaining about different dll's ?
With quick google search about that dll , it seems the issue might have something to do with Windows update
You can try like what mentioned there; however, for ANSYS software, I would recommend to just check any pending Windows update and make sure you install all of them.
Also, go to this directory C:Program FilesANSYS IncANSYS Studentv191prereq , then run every executable one-by-one with 'run as administrator' .
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