I really hope I get some help with this... This has been going on for months now.. basically ever since setting up the server.
So I have a client who has Exchange 2013 running on Windows Server 2012 datacenter edition. He has about 5 computers desktops and laptops running windows 7 or 8. All have Outlook 2013. All email accounts are Exchange based email accounts. He has one computer that for some reason is giving this "Windows Security Microsoft Outlook Connecting to 'email address' " then gives the username and password and the box under it that you can check off that says "Remember my credentials". Right now, it is taking one of the exchange accounts and repeatedly asking for the username and password for it. The password is correct and everything else is correct. The other computers that he has Outlook configured on are working fine and not giving this annoying error message. If I click okay, it still comes up and if I click cancel, it still comes up. If I start Outlook in safe mode, guess what? Message still comes up. Also, email flow still works despite this stupid message. I can send and receive no problem. The other thing I notice is that it happens on whichever exchange account I added last and stays with that one... So if I delete the last one that I added to my Outlook, the message then presents itself corresponding to the second exchange account within the client's Outlook. How do I get rid of this annoying message?? Is there a way to even disable the damn thing maybe in the registry or something?! I need to get rid of this message!! Any help would be greatly appreciated.