I recently encountered a sign-in problem with 3.3. I posted about it here. I uninstalled 3.3 and reverted to 3.2.2.
However, I decided to upgrade again for a different reason and have immediately encountered a similar, but slightly different problem.
I am currently logged in to my organizational AGOL account--so things are working there. However, if I try to log into any of the portals we manage (which are quite a few) or even another organizational account, I get the following. I am at an impasse because if I need to publish to or access data from other Portals, I am effectively locked out. I do not have this issue on earlier versions of ArcGIS Pro, so there is nothing wrong with the portals or webadaptors or anything along those lines. It is 3.3.
