Default offline address list not updating

If these attributes are present, then the AD Objects that are Mail-Enabled or Mailbox-Enabled will appear in the GAL – and ultimately the Offline Address Book.You can see the list of attributes that will be put into the GAL using When Outlook users are running in cached mode, they rely on the Offline Address Book (OAB) to provide them with access to one or more addresses (that are always available when they are connected directly to Exchange) The OAB is rebuilt and downloaded on a default schedule as shown below.In general, Outlook will automatically update the Offline Address Book (OAB) for Exchange accounts once every 24 hours.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.Because of this, a new user may not be visible in the address book, or changes to a user’s name, address, etc.The default configuration for Exchange 2010 has the Address Book will update every 24 hours at 5am.In order to reflect any changes or updates made to the Global Address List, you can force Outlook to download a new copy of the GAL.

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For me, new colleagues are not showing up and the contact pictures aren’t displaying either.

Quite often all Administrators, even Exchange Administrators simply refer to the users they see in the Address section of Outlook casually as the GAL for ease of reference, but really more often than not, you are looking at the OAB.

However sometimes in large complex organisations we have a situation where a new joiner joins and their colleagues want to email them immediately, but they don’t appear in Outlook for them so they call the Helpdesk “Why isn’t Joe Bloggs in the GAL??

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.

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