Powerpoint can't close a file
With Powerpoint quit, go to
~/Library/Saved Application State/com.microsoft.Powerpoint.savedState/
&amp; delete the folder &amp;/or contents.

Quick way to get there, if you're not sure…


From Finder, hit  Cmd ⌘   N  for New Window
Hit  Cmd ⌘   Shift ⇧   G  for Go…
Paste ~/Library/Saved Application State/com.microsoft.Powerpoint.savedState/ including the tilde ~
Delete the files you find in there, data.data, window_1.plist etc, everything, or delete the entire powerpoint.savedState folder itself.


Launch Powerpoint again.