Issues with Provisioning New Users via M365 to Box – Email Confirmation Not Received

Description of the Issue:

I’ve recently set up Single Sign-On (SSO) between Box and Microsoft 365 (M365) using Azure Entra (formerly Azure AD). While existing users who already have a Box password can successfully log in via SSO, I’m encountering issues when provisioning new users from M365 to Box.

Specifically, for newly provisioned users who have never created a password on the Box side, the system requests an email confirmation upon login. However, no confirmation email is received by the user’s M365 email account. I have checked message tracing in M365 and confirmed that the email was never sent from Box.

Steps to Reproduce:

1. Configure SSO between M365 and Box using Azure Entra.
2. Enable automatic user provisioning from M365 to Box.
3. Provision a new user in M365 and add them to the Box group for automatic provisioning.
4. Attempt to log in via SSO with the newly provisioned user.
5. Box requests a confirmation code to be sent via email, but no email is received in the M365 mailbox (confirmed via message tracing).

Testing Details:

• Existing users who have previously created a password on Box do not face any issues when logging in via SSO.
• The issue is specific to newly provisioned users from M365 who have never set up a password on the Box side.
• No trace of the confirmation email can be found in the M365 message trace logs, indicating it was not sent from Box.

What Has Been Tried:

• Checked M365 message tracing and spam/junk folders: No confirmation email is received.
• Verified that the issue is only affecting new users who have not set a Box password.
• Found a similar issue reported in the Box community with no posted resolution.
• Test mode is off until this is resolved.

Thank you for your assistance.

Best regards,
Matthew Elliott