Exchange global address list not updating
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.
Is there any way I can force a manual update of the Offline Address Book (OAB) in Outlook or reset it completely otherwise?
In general, Outlook will automatically update the Offline Address Book (OAB) for Exchange accounts once every 24 hours.
For me, new colleagues are not showing up and the contact pictures aren’t displaying either.
They do for my colleague sitting next to me, so I don’t think it is a server misconfiguration or something like that.
Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment by Microsoft.Check whether Outlook and the computer can access the Offline Address Book file on the server.This action is typically done by Outlook in the background.When it didn’t or when you want to make sure you do have the latest OAB available, you could manually trigger an update from within Outlook as well.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.
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It also happens when you force a download of the Offline Address Book in Outlook.