We are developing an Outlook add-in using the JavaScript API. Our add-in works well inside native Outlook 2016, and when browsing to outlook.office365.com using Chrome or other web browsers.
Trying to launch the add-in while browsing to the Outlook website using Internet Explorer fails to load it (We are getting the "Add-in Error" yellow notification at the top).
This does not happen on all of our computers. Currently, it happens consistently on one, and last week it happened on another computer, but have since stopped happening. Just to make it clear - on most computers, using IE, the add-in runs just fine.
I tried slimming down our add-in, trying to figure out what piece of our code is giving us the hard time. I have ended up with the most simple add-in possible, and it still won't launch on that single computer's IE. You can see this simple add-in here. This add-in links to the office.js and adds a simple text in a div in the initialize callback. It works just fine everywhere else, except that single computer.
My computer is running IE version 11.483.15063.0, Update Versions 11.0.44, if that makes any difference.
Has anyone else encountered this problem? What might cause it?