I've recently finished an Exchange 2007 > 2013 migration. We are on CU9 with two multi-role CAS/Mailbox servers and a third Mailbox-only server. I've migrated public folders successfully and users can access them in Outlook 2013. However, they are always prompted ONCE during each Outlook launch for their username and password when accessing the public folders for the first time. The repeatable steps are:
1) Log in to PC
2) Open Outlook
3) Click Folders > Public Folders
4) Prompt for username/password appears
5) Enter username/password (either as domain\username or with e-mail/UPN - any combination works)
6) Access public folders
I have no idea why the prompt is coming up. You can click "remember password" option and it won't come back until you restart Outlook. It doesn't appear to be an authentication issue, Outlook just isn't automatically passing credentials for some reason.
Any ideas?
Paul Hite - MCSE, MCITP