I have two servers. One is Exchange 2010 and the other is Exchange 2013.
Three of our users had mailboxes on Exchange 2013 for the last few weeks with no problems. They used Outlook 2013 and Outlook 2010. After moving the rest of our ~25 users to Exchange 2013 the users with Outlook 2010 began to be prompted for their password constantly.
They try entering it and it immediately reappears.
The odd thing is it shows connected and they are able to send and receive emails correctly.
I've tested our exchange connectivity using www.testexchangeconnectivity.com and all is well there.
I'm not really sure what's going on.
Any help is appreciated.
Luke
Thanks, Luke Pickard