Hello,
For reasons I cannot phantom, my ArcGIS Pro which worked perfectly prior, now fails during launching.

Portal for ArcGIS is our ArcGIS Pro license management platform.

Connected to our Portal for ArcGIS

After the above is where the problem begins. I click sign in and it continues with the initializing process then it just disappears. The application does not launch. Nothing else happens. This happens over and over again.

The license is definitely being accessed however.


Its baffling because I didn't have this problem before. I've gone through discussions on GeoNet to see if anyone else has encountered this problem. I found nothing. Has anyone got a clue?
Lara