Create a global adressbook

Hello everyone,

Is there a way to create a global address book? It is important that you have a common address book for all users. Currently we have a shared address book. Which happens to double all customer data, during a synchronization.

I’m grateful for every tip or idea

Yours sincerely

Janni MTX

Of course, just add a network addressbook (CardDAV) to you email client. I’m using Thunderbird:

Hello, thank you for your idea.

Unfortunately we can not do this because we use Nextcloud and outlook.
Our goal is a single network address book.
we have a problem all users are synchronized but double. as seen in the attached picture.

does anyone know what the issue is located? Server or on Outlook side?


You can try the Outlook CalDav Synchronizer or