Solved Microsoft SSO not working

[Chris Walters]

This stopped working on V18 to V20 upgrade.

After v20 upgrade, I went into Entra and removed all App Registrations and Enterprise Applications related to 3CX. I then went to the server and reconfigured the application from the 3CX side.

I now see this notification:



When browsing to the sign-in page however, the Microsoft sign-in button is not present:




All users on the system have the Microsoft SSO enabled under Extension Options.

 

[Charles_3CX]

Since the integration was removed and reconfigured, please navigate to the Users > M365 tab and re-enable the integration. Then, add the users under User Sync and select which users should have SSO and other M365 features enabled.

Make sure the email addresses on the existing users’ extensions in 3CX exactly match those of the corresponding users in Microsoft 365. After saving, verify that the necessary integration options are enabled under each user's Options tab.

 

[Chris Walters]

that resolved it, the Sync Microsoft 365 Users at the top had been disabled, thanks!

 

[Charles_3CX]

You are welcome.