Updating address book outlook
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.
The quickest and most thorough method is to simply rename the If you are still having issues with your OAB afterwards or if the files aren’t being recreated after a manual update, it is very likely that your OAB issues are rooted deeper in your mail profile.
In that case, it is recommended to recreate your mail profile.
There are various Registry settings available to control or modify the update and download behavior of the Offline Address Book in Outlook.