Outlook global address book not updating
I have an exchange 2010 environment, and clients running outlook 2007 with cached exchange mode turned on.
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.
Use the Update-Global Address List cmdlet to update the recipients included ina global address list (GAL).
For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax (https://technet.microsoft.com/library/bb123552.aspx).
You need to be assigned permissions before you can run this cmdlet.