Outlook hangs updating address book
I have found that the users that have issues see "OAB URL: Public Folder" when running the Test E-mail Auto Configuration tool, which seems to be the cause - they are not receiving the HTTPS link as the OAB URL.
In Exchange, under Client Access Offline Address Book Distribution, there is only one OAB location set, and that is pointing to our internal and external https paths to distribute the OAB. Why are these users affected by this error receiving "OAB URL: Public Folder"?
However, such software or professional Outlook add-ins are not reliable and can lead to improper functioning of the Outlook.
The Outlook is designed to archive Inbox emails to reduce the mailbox size.
If you don’t have any contacts in the folder then maybe you forgot to choose the folder when you created your export, or you didn’t choose the folder when you were importing your pst-file to the upgraded Outlook.
If for some reason after all of this you still have nothing happening then you may need to rebuild the contacts folder in Outlook.
The users that were not able to sync their address books were all on the same database.
That mailbox database was pointing to an Offline Address Book that was not serving the OAB over HTTPS, it was Public Folder only.
Visit Stack Exchange Other Outlook 2013 users do not have issues downloading the address book.
I've found a Microsoft article about it, but it appears to be user-directed rather than admin-directed.If you don’t have access to the original pst-file then maybe at some point you synced your contacts with your phone?