I'm trying to display Office Add-in errors for Visio 2016.
In the General section of the details pane, select Show add-in user interface errors, and then click OK
From an Excel guide - because nothing specific to Visio can be found - (here), it supposedly can be enabled like so
However, in Visio 2016 there is no such setting.
I tried setting the “VSTO_SUPPRESSDISPLAYALERTS” environment variable to 0 as in this guide (here), but still no COM add-in error alerts or messages appear.
Another guide (here) explains how to troubleshoot Add-in errors, but not display error alert messages.
How to display detailed Visio 2016 COM Add-in error messages similar to this one below?