Microsoft Entra (formerly Azure Active Directory) sign-in lets your team log in to Four/Four with their Microsoft work accounts. There is no separate Entra setup screen: Log in with Microsoft is switched on when an admin connects Outlook Calendar. Connecting Outlook Mail on its own does not enable it. You need a Microsoft admin who can grant admin consent for your organisation.
How sign-in works
Connecting Outlook Calendar sends an admin through Microsoft's admin consent screen, and Four/Four saves your Microsoft tenant. After that, a person who enters their email on the Four/Four login page is offered Log in with Microsoft. They sign in with Microsoft, return to Four/Four, and are matched to their Four/Four user by Microsoft email address. Your Entra policies, such as MFA and conditional access, decide whether the sign-in completes. Microsoft sign-in only reads the person's name and email address.
Requirements
Users must already exist in Four/Four. Invite people under Settings > Team > Invite user. Microsoft sign-in does not create accounts.
Only work or school accounts in your Entra tenant work. Personal Microsoft accounts are not supported.
The mail address on the Microsoft account must match the user's Four/Four email. Accounts with no mail address set in Entra cannot be matched.
Users are not provisioned or removed from Entra automatically. Manage them under Settings > Team.
Set up
Go to Settings > Connections and scroll to Productivity services.
On the Outlook Calendar card, click Connect.
Sign in to Microsoft as an admin who can grant consent for your organisation, review the permissions and accept.
You return to Settings > Connections and the card shows Connected.
To test, log out, enter your email on the login page and click Log in with Microsoft.
The same connection also powers Outlook Calendar features such as the notetaker.
Effect on the login page
Once Microsoft (or Google or Okta) sign-in is available, the password box is hidden for people in your workspace.
Log in with Email remains available. It sends a one-time login link, valid for one hour, to the person's inbox.
Disconnecting Outlook Calendar removes Log in with Microsoft.
Disabling someone's Microsoft account stops Microsoft sign-in but does not remove their Four/Four user, and the email login link would still reach their inbox. Remove leavers under Settings > Team.
Troubleshooting
What you see | Cause and fix |
Authentication failed on the Outlook Calendar card | Four/Four can no longer use the Microsoft connection, for example because consent was removed in Entra. Disconnect and connect again. |
Setup error, or an error banner on Settings > Connections after Microsoft redirects back | The banner shows Microsoft's error code and description. A common cause is that the person connecting could not grant admin consent. Ask a Microsoft admin to connect. |
"We were not able to log you in" | The person has no Four/Four user, or their Microsoft email differs from their Four/Four email. |
No Log in with Microsoft button | The email typed must belong to a Four/Four user in a workspace with Outlook Calendar connected. |
Permissions
Connecting and disconnecting Outlook Calendar in Four/Four needs the Manage connections permission. Without it, you cannot connect or disconnect the integration.