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We are experiencing a critical issue with Microsoft Teams where the Teams desktop and mobile applications are not reflecting the dynamic membership rule defined in Entra ID (Azure AD).

Roy Maalouf 0 Reputation points
2025-11-05T16:43:55.1666667+00:00

We are experiencing a critical issue with Microsoft Teams where the Teams desktop and mobile applications are not reflecting the dynamic membership rule defined in Entra ID (Azure AD).

While the correct number of members appears in Entra and the Teams Admin Center, the Teams apps (desktop and mobile) are displaying all users in the organization (100%) as members of the affected Team.

This issue began yesterday and has been constant since then, with no successful workaround or fix after multiple troubleshooting attempts.

Environment Details:

Tenant: Production (Cloud-only)

Service(s) impacted: Microsoft Teams & SharePoint Online

Scope: 100% of users across the organization are affected

Impact Type: Users are being added to Teams they should not be in

Business Units Affected: All departments (organization-wide)

Business & Operational Impact:

The issue compromises access control and risks exposure of confidential information.

It disrupts Teams and SharePoint operations, blocks communication, and risks data leakage.

There are ongoing audit and compliance deadlines, and this malfunction affects critical live project deliverables.

  • Given the production nature of the tenant and the data sensitivity, the situation is business critical.

Actions Taken:

Verified membership consistency in Entra ID and Teams Admin Center.

Confirmed the dynamic rule is configured correctly.

Tested across multiple devices and accounts (issue persists).

  • Attempted re-sync and refresh operations with no success.We are experiencing a critical issue with Microsoft Teams where the Teams desktop and mobile applications are not reflecting the dynamic membership rule defined in Entra ID (Azure AD). While the correct number of members appears in Entra and the Teams Admin Center, the Teams apps (desktop and mobile) are displaying all users in the organization (100%) as members of the affected Team. This issue began yesterday and has been constant since then, with no successful workaround or fix after multiple troubleshooting attempts.

    Environment Details:

    • Tenant: Production (Cloud-only)
    • Service(s) impacted: Microsoft Teams & SharePoint Online
    • Scope: 100% of users across the organization are affected
    • Impact Type: Users are being added to Teams they should not be in
    • Business Units Affected: All departments (organization-wide)

    Business & Operational Impact:

    • The issue compromises access control and risks exposure of confidential information.
    • It disrupts Teams and SharePoint operations, blocks communication, and risks data leakage.
    • There are ongoing audit and compliance deadlines, and this malfunction affects critical live project deliverables.
    • Given the production nature of the tenant and the data sensitivity, the situation is business-critical.

    Actions Taken:

    • Verified membership consistency in Entra ID and Teams Admin Center.
    • Confirmed the dynamic rule is configured correctly.
    • Tested across multiple devices and accounts (issue persists).
    • Attempted re-sync and refresh operations with no success.
Microsoft Teams | Microsoft Teams for business | Teams and channels | Manage a team or channel
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  1. Alexis-NG 9,090 Reputation points Microsoft External Staff Moderator
    2025-11-05T17:09:26.14+00:00

    Hi @Roy Maalouf,

    Thank you for reaching out to Q&A Forum.

    Following a thorough review of your situation, this issue presents as a complex case that indicating sync failure or service-level issue from Teams, which required back-end logs for further troubleshoot. Given the nature of the problem and the extensive troubleshooting you've already completed, the most effective next step is submitting a support request through the Microsoft 365 Admin Center. This route ensures that a Microsoft support engineer can initiate a remote session to investigate backend configurations, run advanced diagnostic tools, and, if necessary, escalate the case to specialized teams with access to internal systems and logs. These backend resources are essential for resolving issues that go beyond what’s visible in the user interface.

    As community moderators, we’re here to guide you, but due to privacy and security limitations, we don’t have access to the backend tools required for a full resolution. For this reason, contacting Microsoft Support via the Admin Center is the most secure and efficient way forward.

     

    I sincerely recommend you create a support ticket from Microsoft 365 Admin Center > Support > Help & Support.  

    User's image

     

     

    Microsoft also provides customer service phone numbers based on your region. You can find the appropriate contact number here: Customer service phone numbers - Microsoft Support 

    Note: We appreciate your understanding regarding the scope of support available through this forum. As moderators, our role is to provide general guidance and assist with common troubleshooting steps. While we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related issues but we’ll continue doing our best to support you within the scope of our responsibilities.   I hope the information provided proves useful. Please proceed with the outlined steps and let me know whether they resolve the issue. If not, I’ll be glad to continue working with you to find a solution.

     

    I genuinely appreciate your understanding and patience throughout this process.

    Should you have any questions or need further assistance, feel free to reach out at any time.

     

    I look forward to hearing from you.

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