Global address book not updating when accounts are disabled
It also insulates users from network latency and connectivity issues while they are using Outlook.
When you have Cached Exchange Mode enabled, Outlook by will by default cache the main Global Address List as well.
After you disable a mailbox in Office 365, users will still be able to see the mailbox name in the Global Address Book (GAL) when using Outlook 2013 or the Outlook Web App, which can cause confusion.
If you have a disabled mailbox or mailboxes in Office 365 that you need to hide from the (GAL), you can easily do so with Better Cloud, either for individual mailboxes or in bulk.
If you decide to deploy Cached Exchange Mode, learn how to Configure Cached Exchange Mode.
If you’re an administrator, this article tells you about Cached Exchange Mode and Online Mode and helps you decide when to deploy each.
Then under the attribute editor browse down to Show In Address Book as seen below. Then simply remove the entries ( all of them ) that you see by highlighting and selecting remove. The next time your GAL rebuilds these accounts will be removed. If you are impatient like me you can drop into power shell and run these commands to update it immediately.
Summary: Learn about the two Exchange connectivity modes that you can use for Outlook 2013 deployments—Cached Exchange Mode and Online Mode.
Audience: IT Professionals Decide which connectivity mode, Cached Exchange Mode or Online Mode, is appropriate for your environment.
When you configure an Outlook 2013 account to use Cached Exchange Mode, Outlook 2013 works from a local copy of a user's Microsoft Exchange mailbox that is stored in an offline data file (file) on the user's computer, together with the Offline Address Book (OAB).
But this is a small office already had a subscription to Norton Internet Security and wants to use up the remainder of that subscription before I switch them to a Business Endpoint Protection suite.