Follow-up: Request to unblock B2B invitations in Microsoft Entra ID after purchasing Azure Developer Support

アムス 25 Reputation points
2026-06-18T07:46:03.9+00:00

This is regarding the issue we posted in the following Microsoft Q&A threads.

JP: https://learn.microsoft.com/ja-jp/answers/questions/5891687/microsoft-entra-id-b2b?page=1&orderby=Helpful&comment=answer-12775863&translated=false

US: https://learn.microsoft.com/en-us/answers/questions/5892732/request-to-unblock-b2b-invitations-in-microsoft-en#message-1779847576945

We had been waiting for support via private message on the US version of the question. However, this issue is now affecting our business operations, so we have purchased the Azure Developer Support plan.

We would greatly appreciate your assistance in handling this issue.

Thank you for your support.

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
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  1. AI answer

    2026-06-18T07:46:23.1733333+00:00

    Handling a blocked B2B invitations issue requires direct tenant-level investigation by Microsoft support and cannot be resolved through community forums alone.

    Since an Azure Developer Support plan has already been purchased, the next step is to open a formal support request from the Azure portal so the support team can access tenant details and unblock B2B invitations if appropriate.

    Follow these steps:

    1. Sign in to the Azure portal with an account that has sufficient permissions (for example, Owner or Support Request Contributor on the subscription associated with the Azure Developer Support plan).
    2. In the Azure portal, go to Help + support.
    3. Select Create a support request.
    4. For Issue type, choose the category that best matches the problem (for example, Microsoft Entra ID / Identity / B2B collaboration or External Identities).
    5. In the problem description, include:
      • That B2B invitations are blocked in Microsoft Entra ID.
      • A link or reference to the existing Microsoft Q&A threads so the engineer can see prior history.
      • Impact details (for example, production impact, users affected, time frame).
    6. Complete the remaining steps to submit the ticket under the Azure Developer Support plan.

    Once the ticket is created, the assigned support engineer can:

    • Review tenant configuration (cross-tenant access settings, B2B policies, possible blocks).
    • Coordinate with internal teams if there is a service-side block on B2B invitations.
    • Provide specific remediation steps or perform unblocking where required.

    If the tenant is blocked due to risk or policy, affected guest users may also see messages such as "Your account is blocked. We've detected suspicious activity on your account." In those cases, users can attempt self-service password reset at the Password reset portal if enabled, or work with their IT administrator as described in the identity protection documentation.

    For any follow-up questions on identity development or configuration while the support case is in progress, Microsoft Q&A remains available as a community channel, but the actual unblocking must be handled through the support request just created.

    References:

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