How to deal with TenantAccessBlockException

Question

How to deal with TenantAccessBlockException

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Dear Microsoft team,
I noticed this afternoon my outlook account got logged out, I dont know the reason why but when i try to login back i get this notification that my tenant organization has been blocked what can I do to rectify this:

UTC Date: 2026-11-05T16:09:26.896Z

Back Filled Errors: Unhandled Rejection: Error: 500:undefined|undefined:undefined
err: Microsoft.Exchange.Data.Storage.TenantAccessBlockedException

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Answer 1

Hi,

Based on the error details, TenantAccessBlockedException message indicates that access has been blocked at the Microsoft 365 organization level.

The next steps in this case depend on whether you're an administrator or not:

Scenario 1: If you are an end-user, not an administrator

Please refer to this article How do I find my Microsoft 365 admin? to contact your organization’s Microsoft 365 administrator and provide them with the error details so they can help troubleshoot this issue through the Microsoft 365 Admin Center.

Scenario 2: If you're an administrator

Please follow these steps:

Sign in to Microsoft 365 Admin Center > check Billing > Your products and Billing > Bills & payments.
Resolve any overdue balance or payment failure
Confirm that an active license containing Exchange Online is assigned to your account

If the subscription is active and there are no billing issues, please open a support ticket through Support > Help & support. Microsoft Support agent will need to review the tenant-level restriction and help you remove the tenant-level block.

For detailed guidance on how to open a support ticket with Microsoft Support, please refer to: Get support - Microsoft 365 admin | Microsoft Learn

I hope this information helps move the case forward. Should you have any further questions or need additional assistance, please feel free to share them in the comment below. I'm very happy to help.