Outlook 2016 global address list not updating cached mode
This cannot be done through Outlook Web Access (OWA) or Outlook Mobile Access (OMA) -- it must be initially accessed through a traditional Outlook client.
Once this is completed, the user is able to now log in to that account via OWA and the Exchange admin can use his / her Outlook's File - Inbox command to view the mailbox.
A benefit of manually deleting the oab-file is that before they are being re-downloaded, you are working with the Online Address Book.
Exchange 2013 only supports Outlook 2007 (post SP3 and cumulative update), and Outlook 2010 must be at SP1 with cumulative update.
When the value is set to 0, Outlook will use 16 to prevent a “divide by 0” error.
I believe by default the GAL refresh is (approximately) every 12 hours or so.In my experience, you do not have to log in to the network as that user, nor do you have to open their mailbox for the first time in Microsoft Outlook.