Remove Add-in from Office 2016 for Mac After installing an add-in (.xla) which worked once, I'm trying to remove it so I can install an updated version.

So far I've:


deleted the .xla
removed the check box in Tools > Add-ins
removed it from the list
Quit Excel completely
reopened Excel.


I get an error that Excel can't find the plugin, it's back in the Add-ons list, and the Add-ins toolbar is still there with the Add-ins buttons.

Did all the same stuff again, this time with a reboot thrown in. No change.

Where is it storing this? 
I looked through the plists in the Excel bundle, but couldn't find any references.
You have to do this through "My Add-Ins"

In the Insert Menu, select Add-Ins and then the submenu "My Add-Ins"



Click the 3 dots in the upper right hand corner of the Add-In you wish to remove.  Then click "Remove".