Rather than waiting 24 hours for Outlook to update the Offline Address Book on its own, you can force an update via the Send/Receive menu button.
You can disable the option “Download changes since last Send/Receive” to make sure you get a complete fresh copy of the OAB but this could take longer to download.
They are stored in the following location: which itself holds subfolders with named after Account GUIDs.They do for my colleague sitting next to me, so I don’t think it is a server misconfiguration or something like that.Is there any way I can force a manual update of the Offline Address Book (OAB) in Outlook or reset it completely otherwise?When you have multiple Exchange accounts configured, you’ll find a folder for each account that you have.
In Outlook 2010 and previous, it is recommended to leave the option “Full Details” enabled.
In Outlook 2013 and Outlook 2016, you’ll find that this option is no longer available as full details are also used to build the Contact Card.