Updating the address book outlook
In that case, it is recommended to recreate your mail profile.When you have Cached Exchange Mode enabled, Outlook by will by default cache the main Global Address List as well.
In Outlook 2013 and Outlook 2016, you’ll find that this option is no longer available as full details are also used to build the Contact Card.
In this guide, the relevant timings are explained and instructions are given in how you can directly force an update and resync, which can be very handy when troubleshooting or when you work in an Exchange environment which sees a lot of user mailbox mutations.
This means that in the worst possible scenario, an update to the Address Book won’t become available to the user until 48 hours after the change.
This can cause the “Updating Address Book” status appearing for a long time.
Outlook is helping you complete other activities and does not allow the address book update to interfere.