I have an Excel macro that call a new instance of Word and creates a new
document, does some things in the doc, then closes the doc without saving
changes and sets the doc and Word app objects to nothing using
doc.Close SaveChanges:=wdDoNotSaveChanges
appWD.Quit
Set doc = Nothing
Set appWD = Nothing

I used the macro this morning repeatedly - perhaps 30 times in succession.
(Each time had to be an individual call - there was no way to loop this.)
After doing all that, I did not check to see if there were any open
instances of Word left (there were none during testing, so I didn't think I
should have to) or other issues. Then I tried to open a Word document with
an AutoOpen macro, and Word crashed. Subsequent attempts produced further
crashes. I wound up eventually having to rebuild Normal to get things
moving again.

Question: Could just repeatedly accessing the Word app have caused this?
Is there a better way to avoid these issues in the future?

Ed