NextCloud

h1. System Address Book Access Change in Nextcloud 27

In Nextcloud version 27, a significant update has been introduced regarding the system address book. It is now accessible to all Nextcloud users, providing a more unified experience.

Nextcloud's system address book is a read-only directory that contains contact information for all users within the instance. It facilitates easy communication and collaboration across the platform.

A key aspect of this change is that disabled users are now automatically removed from the system address book. This ensures that the address book remains up-to-date and reflects the current user base.

For users who wish to disable access to the system address book, Nextcloud offers a simple solution. By using the app configuration value "system_addressbook_exposed," you can control this feature to align with your organization's preferences.

To disable access to the system address book for all users, you can execute the following command:

<pre>

sudo -u www-data php /var/www/html/nextcloud/occ config:app:set dav system_addressbook_exposed --value="no"

</pre>

It's important to note that while this change affects access to the system address book, it does not impact Federated sharing, allowing you to maintain seamless collaboration with external Nextcloud instances.

These updates aim to enhance the usability and security of your Nextcloud experience, and we hope they prove beneficial for your organization's needs.