Hi - we are using Rackspace hosted exchange, and for the last few weeks we've had this problem that we cant resolve. For some reason, for a couple different email addresses, on a couple different computers, we are constantly getting pop-ups in Outlook 2016 and 2010 looking for a password for the email accounts. The accounts are and have been set to autodiscover when setting up the email address and this hasn't been an issue for years prior to a few weeks ago. I've created new passwords, created new profiles, removed and added cached mode, but nothing seems to be working, and Rackspace has no answers. Any help would be appreciated.