Updating the lync 2016 address book
When you have Cached Exchange Mode enabled, Outlook by will by default cache the main Global Address List as well.
This is called the Offline Address Book and is being generated on the Exchange server.
If the update mechanism appears to be broken for you, it could be because of a corruption in your OAB or in your mail profile.
In that case, you can completely reset it by deleting the files making up the OAB or by recreating your mail profile.
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.
We have run a sync operation through a batch file but this only works for the length of the current log on session on the company network.
Visit Stack Exchange I have a user that has external contacts that she has added to Outlook and communicates with through Lync.
All of these contacts have numbers and email addresses.
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?