Logging into Outlook Mail

admin asthmaeducators 0 Reputation points
2026-06-11T18:17:37.99+00:00

I am getting this error message

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Microsoft.Exchange.Data.Storage.TenantAccessBlockedException

[Moderator note: Personally Identifiable Information removed]

Outlook | Web | Outlook on the web for business | Email
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  1. Kristen-L 14,500 Reputation points Microsoft External Staff Moderator
    2026-06-11T18:39:41.7566667+00:00

    Hi @admin asthmaeducators,

    Thank you for sharing your concern.

    The error you're seeing - TenantAccessBlockedException - typically appears when a Microsoft 365 tenant has been blocked at the organization level. This can happen if:

    • Your Microsoft 365 subscription was temporarily suspended due to an expired domain, billing issue, or past‑due balance, or
    • You recently renewed your domain, but the update hasn’t fully propagated through Microsoft’s backend systems yet (this can take up to 24 hours).

    Because this is an organization‑level block, it must be addressed by your Microsoft 365 Global Admin (IT admin); individual users cannot resolve it by reinstalling apps, clearing cache, or changing local settings.

    To proceed, please have your Global Administrator complete the following steps:

    1. Verify and resolve any billing‑related issues

    • Sign in to the Microsoft 365 Admin Center.
    • Navigate to Billing > Bills & payments and settle any overdue balance.
    • Then go to Billing > Your products, select the Microsoft 365 or Exchange Online subscription, and check the status.
      • If the subscription shows Suspended or Disabled, select Reactivate subscription and follow the prompts (including updating the payment method if needed).

    2. Check for compliance‑related holds

    • Review the Microsoft 365 Compliance portal to ensure there are no compliance blocks or enforcement actions impacting tenant availability.

    Note: After clearing overdue balances or reactivating a subscription, Microsoft may take 1–3 hours (up to 24 hours) to fully restore services. During this time, you may still see the error: “Tenant is blocked with Microsoft.Exchange.Data.Storage.TenantAccessBlockedException.

     

    3. Optional: Use PowerShell to verify and unblock accounts

    Your Global Admin can run the following commands: Verify if your SKU (license) is Active:

      

    Connect-MsolService    
Get-MsolAccountSku
    • Run:
    • Set-MsolUser -UserPrincipalName ******@domain.com -BlockCredential $false
    • This unblocks the user (if individual account was locked).

    If a suspension/block is confirmed but cannot be resolved via the admin portal, your Global admin should submit a ticket with Microsoft support.  

    A technical support engineer can initiate a remote session to review the issue in detail, confirm the backend configurations, and run any required synchronization tools to help resolve the problem. If additional expertise is needed, they can involve the appropriate specialized team for deeper investigation.

    Here’s what your Microsoft 365 Global Admin (IT Admin) should do next:    

    • Your Global Admin should open a support ticket with Microsoft to receive advanced diagnostics and technical assistance. Detailed instructions are available here: Get support - Microsoft 365 admin.      
    • If phone assistance is preferred, your admin can use the following link to find the correct contact number: Global Customer Service phone numbers - Microsoft Support   
    • If your subscription is managed through a Microsoft partner or reseller, they can also assist with opening a support request and liaising with Microsoft on your behalf.   

    Note: If you are not the Global Administrator, please work with your Microsoft 365 Global Admin to complete these steps, as only they have the required permissions.

    I apologize for redirecting you the related team support, as the moderators in this community don’t have access to the detailed system needed to troubleshoot this effectively due to privacy and security constraints. But Microsoft’s support team has elevated permissions and access to backend systems that we, as community moderators, do not. This ensures your issue is handled with the right tools and expertise and helps you get a faster resolution.    

    I hope this information helps. Please try the steps and let me know whether they resolve the issue. If the problem persists, we can work together to find a solution.

    Should you have any questions or need further assistance, feel free to share them in the comments so I can continue to support you.

    If you found this post helpful, I encourage you to mark it as an accepted solution. This will make it easier for other community members with similar questions to find answers quickly.

    Thank you for your kindness and for contributing to the forum. 

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".      

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. AI answer

    2026-06-11T18:17:50.0933333+00:00

    The error Microsoft.Exchange.Data.Storage.TenantAccessBlockedException with esrc: StartupData indicates that access to the tenant (organization) is currently blocked on the service side. This prevents Outlook on the web and other Microsoft 365 services (such as Teams) from loading mailbox data, and typically appears as a transient 500-level server error.

    In a very similar case, the issue was temporary and resolved automatically after some time; the user was able to sign in successfully after waiting about 30 minutes.

    Recommended actions:

    1. Wait and retry
      • Wait at least 30–60 minutes and then try signing in to Outlook on the web again.
      • If using multiple browsers or devices, test from another browser (and InPrivate/Incognito mode) to rule out local caching issues.
    2. If the problem persists
      • Contact the Microsoft 365 tenant administrator (or IT support) and provide the full error details, including:
        • TenantAccessBlockedException
        • esrc: StartupData
        • UTC Date, Client Id, and Session Id from the error.
      • The admin should check the tenant’s service health and any possible tenant-level blocks in the Microsoft 365 admin center and open a support case with Microsoft if the block does not clear on its own.

    Until the tenant block is cleared on the service side, Outlook on the web sign-in for that tenant will continue to fail.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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