Automatically Re-open Excel Files on Reboot or Login
Mac Excel doesn't support native Mac application behaviours such as Sudden Termination and User Interface Preservation.
In practice what this means, is that whenever you log off, reboot, or hard reboot, Excel will not open the files which you were previously editing, but will pop up an open file dialog (or worse, a popup stating that Excel was improperly shut down; and this popup consumes 100% cpu until Excel is clicked on).
Mac users are not usually subjected to these very Windows-like practices.
The usual Mac experience with shutting down, logging off, or re-booting, is that when you log on again your entire Mac user environment - including all documents and windows you had open previously - is restored.
The only exception to this in my own experience is Excel (I don't know about Word as I don't use it).
So, my Mac kinda feels like the 1990s, here.
Please Microsoft, implement core Mac application behaviours and save us from Excel popups and having to re-open our files every time we shut down or log off and back on.
Lisa Hazard commented
Still a problem in late 2019...