Hey LabOps,
Been looking for answers myself, so you're not alone.
I'm dealing with the PC machines (Win7x64 SP1) by creating a master image and deploying using MS WDS.
After capturing our master image, I would test the system I created the master image on to ensure the Adobe CC apps were running fine.....and it was.
Moved forward to deploy, and found after deploying, the same "sign-in" message box anytime you launched any Adobe app regardless of user including local administrator.
Going to keep an eye on this thread.