Use the Update-Offline Address Book cmdlet to update the offline address books (OABs) used by Microsoft Outlook clients.
For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.
This morning I was asked to update the Global Address List and Offline Address Book in an Exchange environment.
You could wait for Exchange to do it automatically (the default schedule is once a day) but what when you want to force the update to take place right now?
When it didn’t or when you want to make sure you do have the latest OAB available, you could manually trigger an update from within Outlook as well.
If the update mechanism appears to be broken for you, it could be because of a corruption in your OAB or in your mail profile.
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I might have a problem with my Offline Address Book in Outlook.
You can disable the option “Download changes since last Send/Receive” to make sure you get a complete fresh copy of the OAB but this could take longer to download.
The other day I was troubleshooting an issue where users were not able to download the Offline Address Book (OAB).
This situation however is extremely rare since the default maintenance time on Exchange is at AM and updates and downloads are usually performed during working hours.
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.
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.