I can not have all possible reasons we found in mind and I can’t also not always do the whole ‘searching work’. Often it’s helpfull for users to know about what she/he can seach in forum. After some tries she/he can come back with a summary and we have a better starting point.
And I think… this was the thread what I had in mind: CTD on launch caused by ucrtbase.dll with Exception code c0000005 - #45 by Bekotino