Why can't I change the normal template for microsoft word 2016 for mac?
This worked for me:

You may wish to update your Normal template as well.  To do so:


Open the Normal.dotm template (Note: You MUST navigate to the Normal template using the File menu in Word, and choose "Open".  Don't try it from the Finder or you will make a copy of Normal each time.)
Close all other documents (this is important...if you don't, Word holds a hidden instance of the old version open).
Change the paper size.
Add and remove a space from the text (to force Word to save the document)
Save the Normal template.  (If Word prompts you for a file name, you did not open the file correctly and you now have a copy that is not a template.  Cancel out and start again...)
Close Word.


Should be good when you re-open.