Outlook 2016 cached mode gal not updating
By caching the user's mailbox and the OAB locally with Cached Exchange Mode, Outlook no longer depends on continuous network connectivity for access to user information.
While connected, Outlook continuously updates users’ mailboxes so that the mailboxes are kept up-to-date.
Items from an Exchange account are stored in the Outlook cache.
If this cache becomes corrupted, it may cause synchronization problems with the Exchange server.
The user can select Cached Exchange Mode or Online Mode during account setup or by changing the account settings.
You can also deploy one mode or the other by using the Office Customization Tool (OCT) or Group Policy. But we can point you in the right direction if you want to learn how to turn on Cached Exchange Mode in Outlook 2013 or change how much email to keep offline.
To solve this problem, you can empty the cache in Outlook so that Outlook can download all the items from your Exchange account again.
Caution: The following procedure deletes any information that is not synchronized with the Exchange server, including your contacts' mail certificate.
These operations include: Delayed delivery options are client side in cached mode and server side in online mode.
Emptying the cache replaces the contents of the folder with the latest items from the Exchange server.
Before emptying the cache, you may want to ensure that your Outlook information is backed up.
Virtualized or Remote Desktop Services (RDS) (Terminal Services) environments that run Outlook 2013 and on which disk size or disk input/output (I/O) limitations prevent running Cached Exchange Mode at the scale you want.
If users work with a large mailbox, you can reduce the size of the local data file by using Cached Exchange Mode with the sync slider enabled.Cached Exchange Mode was introduced in Outlook 2003 to give users a seamless online and offline Outlook experience.