When opening a specific map document in ArcMap and prompted to login to ArcGIS Online some users are getting the following error:
Once you click ok, you just get a empty mxd open. I can open it with my ArcGIS Online credentials but with another users ArcGIS Online details it doesn't work. We have tested this with a few different credentials on the same computer and some work and some do not. All users have ArcMap 10.7 and Creator level ArcGIS Online accounts. Any advice on what could be causing this?