How do I synchronize contacts with a 'public folder' in Microsoft 365 Exchange Online?

Preface

After Microsoft deactivated "Basic Authentication" for Exchange Online in 2022, it is no longer possible to simply enter credentials in the sync.blue® Dashboard to synchronize contacts from a "Public Folder." Instead, you need to create a new "App Registration" in Azure Active Directory once to grant sync.blue® the necessary permissions to access the contacts. Finally, you can establish a new connection to the "Microsoft 365 - Exchange Online (Public contacts)" source in the sync.blue® Dashboard as usual and set it up.

Customer Requirements

• A Public Folder of type "Contacts" must have been previously created using the "Exchange Admin Console."
• An "App Registration" must be created once through the Azure Active Directory Admin Center.

Instructions: Creating the App Registration

1. Click on "New registration":

2. Enter the data for the App Registration:

Note: No input is required for the field next to "Public client/native (...)."

3. Make a note of the displayed Client ID and Tenant ID:

4. Click on "Add a certificate or secret":

5. Create a Client Secret:

Tip: Create a calendar reminder to periodically create a new Client Secret and enter it into sync.blue®!

6. Make a note of the displayed Client Secret:

7. Add a new API permission:

8. Add the full_access_as_app API permission:

9. Grant administrator consent: