Exchange Server 2019 Distribution groups not updating in Offline Address Book

Question

Hello,

We have created few distribution groups, but users are unable to find those groups in address book. Like to know what could be the issue

Thanks

Answer 1

Hi @IT Engineer,

Welcome to post in our Q&A forum!

There could be several reasons why the distribution groups are not showing up in the address book. Here are some possible causes and solutions:

1. Time delay: It can take up to 48 hours for the changes to reflect in the address book. Please login Outlook Web App (OWA) to check if it takes effect.
2. Offline Address Book (OAB) not updated: The OAB is a local copy of the address book that Outlook uses. If the OAB is not updated, it may not show the latest changes. You can force an update of the OAB with your outlook client.
3. Distribution group hidden from address lists: If the distribution group is hidden from address lists, it will not show up in the address book. You can unhide the group by running the following command in Exchange Management Shell:

Set-DistributionGroup -Identity <name-of-group> -HiddenFromAddressListsEnabled $false

1. Default OAB not configured correctly: If the default OAB is not configured correctly, it may not show the distribution groups. You can try updating the default OAB in Exchang management console.

Hope the above can help you!

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