Even though Outlook is the last in the chain, it is often the first level where the troubleshooting takes place as usually this is where the request is coming from.And since this website’s main focus is on Outlook, it makes sense to start with Outlook as well ;-).
In August 2013, The Department of the Navy established its first-ever, fully synchronized USN/USMC GAL.
The DON NMCI GAL allows USN/USMC personnel to quickly locate contact information to send emails.
Prompt before for full download As the OAB can be quite large in some environments, it could be wise to be prompted when Outlook wants to download the full OAB.
This allows you to abort the update process when you are for instance on a slow or expensive connection.
Full OAB download threshold To modify the threshold at which Outlook will download the full OAB rather than the incremental update, you can set the following Registry value Key: As the value, set at which relative size a full OAB download should take place rather than an incremental update.