Here is the question regarding ArcGIS Pro 1.0.2 log in. I could not log in to ArcGIS Pro to start the ArcGIS pro application.
Behavior is following;
Start ArcGIS Pro then attached "errormessage.jpg" displays. Check on "Sign in to ArcGIS Online" then click OK. Then same "errormessage.jpg" displays and I have never log in to ArcGIS Pro. I tested on several Japanese Windows 7 64bit PC(which meets ArcGIS Pro requirements both hardware and software) but same result. I can log in to ArcGIS Online Organization page. Also I could log in to ArcGIS Pro at home so this is not related licenses. I am suspecting some network related issue on work environment but no idea. I was wondering some of the user might experiencing same behavior and hopefully know the work around.