I’ve been getting the generic Not enough memory error message in Excel for Mac 2016 (version 15.28). I finally figured out what’s triggering it. I changed the current sheet’s gridline color! Sounds like a software bug to me.
I hope Microsoft can fix this annoying software bug soon!
Of course, if Microsoft had not made the printed gridlines so thick and ugly in Excel 2016, I wouldn’t be messing with the gridline color in the first place. But that’s another topic.