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For a federated Apple Business Manager (ABM) account that appears locked only on the Apple side while Microsoft Entra ID shows the user as healthy, the next steps must focus on:
- Verifying that Entra is still correctly synchronizing the password state and sign-in status for this user.
- Escalating to a support channel that can look at tenant-level federation and lockout behavior.
From the provided information, the most relevant guidance is around how password and lockout state flows from on-premises AD to Entra ID and then to federated services, and how to troubleshoot when some users can sign in and others cannot.
Actionable checks and steps:
- Confirm password/lockout state in Entra and on-premises AD
- Ensure the account is not flagged with “User must change password at next logon” in on-premises AD. If it is, clear that flag or have the user change their on-premises password, then wait for synchronization.
- If the user ever changed their password directly in a cloud portal, change it again on-premises and allow it to sync. This ensures Entra has the authoritative, current password state.
- If using password hash sync, verify that the user’s
PwdLastSetis syncing correctly to Entra’sLastPasswordChangeTimestamp. If custom sync rules were created, confirm thatPwdLastSetis not filtered out for this user.
- Check for partial sync issues affecting only this user
- Since other federated users work, treat this as a “some users can’t sign in” scenario.
- Validate that this user is fully in scope for Entra Connect sync and not accidentally excluded by OU or attribute-based filtering.
- Use tools such as IdFix (if applicable) to check for duplicate UPNs or email addresses that might cause this user to be treated differently in the sync pipeline.
- Review sign-in and risk signals in Entra
- Even though the user is not marked as “risky,” review Entra sign-in logs for this user around the times ABM shows lockouts. Look for repeated failed sign-ins or conditional access blocks that might cause Apple to treat the account as locked.
- If there are repeated failed attempts from Apple endpoints, this can explain why ABM shows a lock even when Entra shows the user as fine.
- Re-trigger a clean password change flow
- Perform a password reset on-premises (or in Entra if cloud-only) and ensure the change syncs.
- Wait for synchronization and then test sign-in to a Microsoft cloud service first (e.g., Microsoft 365) to confirm the new password works end-to-end.
- After that, attempt ABM sign-in/activation again to see if Apple picks up the updated password and clears the lock.
- If the user is federated via AD FS or another IdP
- If federation is via AD FS or a non-Microsoft federation server, verify that the relying party trust and token issuance are correct and up to date, as misconfigurations can cause repeated failures that appear as lockouts on the relying system.
- Ensure any recent changes to federation configuration have been applied and that the Entra relying party trust is healthy.
- Escalate via Microsoft support when tenant-level lockout/federation behavior is suspected
- Because Apple indicates the lock is controlled by Entra and other users are fine, this may require tenant-level investigation of federation and sign-in logs that only Microsoft support can perform.
- For similar “locked out / MFA / tenant” issues where admins cannot resolve via portal, the recommended path is to open a support ticket so the Data Protection or identity support team can directly assist and restore access.
- Human support options
- If standard support ticket creation is blocked by the virtual assistant, use the documented global support phone numbers for Entra/identity to reach a support engineer who can bypass the automated flow and attach logs to the case.
These steps focus on ensuring the user’s password and lockout state are correctly synchronized and that there are no hidden sync or federation issues affecting only this account. If all checks are clean and the issue persists, a Microsoft support case with sign-in logs and correlation IDs from the user’s failed Apple sign-in attempts is required so the identity team can trace the flow end-to-end.
References:
- How to troubleshoot password synchronization when using Microsoft Entra Connect
- Federated users in Microsoft Entra ID are forced to sign in frequently
- Error 80048163 when a federated user tries to sign in to Microsoft 365, Azure, or Intune
- Common problems with two-step verification for a work or school account
- Troubleshooting the Microsoft Enterprise SSO Extension plugin on Apple devices
- Severity A Situation - Locked out of global admin account (MFA) - business down - Microsoft Q&A