MS Word for Mac (latest version) - resetting normal.dotm

From this thread in Apple Exchange, the folder's location has changed for Office for Mac 2016. It's now located in

~/Library/Group Containers/UBF8T346G9.Office/User Content/Templates

For Office for Mac 2011 or if you upgraded from this edition to 2016, browse to this location

~/Library/Application Support/Microsoft/Office/User Templates/My Templates

In Windows, I can delete the file normal.dotm to reset it. So you should try doing so in your Mac. You need first to close Word before deleting.

For those who wind up here looking for how to find the Normal.dotm file on a Mac, (OSX 10.13.3 and Word v16.10, US English) I found it here:

cd ~/Library/Group\ Containers/UBF8T346G9.Office/User\ Content.localized/Templates.localized/
rm Normal.dotm
rm normal.dotm.bak

And as the instructions here say, deleting or moving the corrupted Normal.dotm fixes the problem, by auto-creating a new template when Word next runs.