Entire M365 tenant locked out for 5 days — all users including sole global admin return "account not found"; support keeps asking for a working email

Question

Entire M365 tenant locked out for 5 days — all users including sole global admin return "account not found"; support keeps asking for a working email

Senthil Kumar Kulandaivelayutham 0

We have been completely locked out of Microsoft 365 since September 4. Every sign-in for our domain returns "We couldn't find an account with that username," including the sole global admin. No one in the organization can access email, Teams, or the admin center. Our business has effectively been down for five days and we have no path forward.

Tenant details

Tenant: xxx.onmicrosoft.com (originally provisioned via GoDaddy about a year ago, migrated to direct Microsoft management a few months later under the Microsoft for Startups program)
Custom domain: santechamerica.com
Licenses paid for a full year; production Azure workloads run in the same tenant and are still operational

What we have verified

getuserrealm still resolves santechamerica.com to this tenant as Managed (non-federated)
MX records still point to santechamerica-com.mail.protection.outlook.com
GoDaddy's email status page confirms the service is Microsoft-managed and GoDaddy has no control over it
No changes were made on our side. The portal does not allow deleting the last global admin, so removing 20 users plus the only admin could not have come from us. The user objects appear to have been deleted at Microsoft's end.

Support experience so far

First contact called it a "domain lock" and promised a same-day callback that never came.
A second agent called and said the case would be handled.
The Tenant Data Recovery team then spent an entire call asking for a "working email address." There is none — that is the problem. They declined to document the case in writing and told us to wait 48 hours. That window has now passed with no update.

We are genuinely helpless here. There is no admin to sign in with, no self-service path, and each call restarts from zero. We control DNS for the domain and can complete TXT-record ownership verification immediately.

What I'm asking

Is there an escalation path for a full tenant lockout where no admin credential exists, beyond the standard Tenant Recovery queue?
Can someone from Microsoft pick this up and confirm in writing what has been reviewed? The 30-day soft-delete window for the deleted users started September 4.
Has anyone seen this pattern — a formerly GoDaddy-resold tenant losing all user objects after migration to direct Microsoft management?

Any pointers to the right team or process would be appreciated. Five days of total outage for a paying customer with no acknowledgment is not sustainable.

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2 answers

Your answer

Answer 1

For a full tenant lockout with no working Global Administrator, the supported path is Microsoft 365 support and identity verification. There is no separate self-service escalation that bypasses tenant recovery.

Based on the described state:

Try the standard recovery entry points first:
- Go to the admin portal.
- Try any previously used admin sign-in, including the original onmicrosoft.com admin account.
- If prompted to request admin access, follow that flow.
If sign-in and recovery prompts fail, open a support request through Microsoft 365 support:
- Go to the Microsoft 365 support page.
- Select I can't sign in or access my tenant.
- Be prepared to verify organizational ownership through items such as:
  - official business documentation
  - domain ownership
  - publicly listed company registration data
Because the tenant was originally provisioned through GoDaddy, confirm whether the custom domain is still tied to a GoDaddy-provisioned Microsoft 365 tenant state:
- If sign-in is redirected or blocked because of a GoDaddy-managed connection, contact GoDaddy and request release of the custom domain from the Microsoft 365 tenant.
- This can temporarily disrupt email service, so confirm impact before proceeding.
- After release, sign in with the default NETORG...onmicrosoft.com admin account if applicable, and use Forgot my password if the password is unknown.
If a partner previously managed the tenant and still has an active GDAP relationship with the required roles, the partner can help with password reset or elevation. If there is no partner with the required GDAP access and no other Global Administrator exists, Microsoft support is the required path.
For a locked-out tenant owned by the organization, Microsoft support can route the case for credential reset or ownership claim after verification. The documented support path states that if locked out of a tenant, a support ticket must be opened.

Supported answers to the specific questions:

For escalation beyond normal self-service: the documented path is still Microsoft 365 support with identity verification. Microsoft for Nonprofits and similar program teams cannot bypass identity verification or directly restore tenant access.
For the “working email address” issue: the documented process focuses on identity and ownership verification, not on requiring access to the affected tenant’s email. Domain ownership and business documentation are explicitly listed as verification methods.
For the GoDaddy history: the documented GoDaddy issue pattern is domain binding, redirected login, or blocked admin access. The provided material does not document a confirmed pattern of all user objects disappearing after migration to direct Microsoft management, so no supported conclusion can be drawn on that point.

Answer 2

Kien 1,145 Independent Advisor

Dear Senthil Kumar Kulandaivelayutham,

Please note that since your account is belonged to an organization, none of moderators or forum users could help you do this action.

Based on your description, kindly try to create a new tenant with trial subscription to access and submit a ticket in the Admin Center.

Sign up for a free trial (new tenant with trial subscription) of Microsoft 365 at this link: Compare All Microsoft 365 Plans | Microsoft. The goal is to create a temporary tenant with a Global Administrator account so that you can sign in to the Microsoft Admin Center. Once connected, you can submit a support ticket directly to Microsoft. Please remember to cancel the trial subscription once your issue is resolved to avoid unwanted charges.

How to submit support ticket in Admin Center: Get support - Microsoft 365 Admin | Microsoft Learn

Once you contact the Data Protection team, you will be required to provide proof of ownership of the company. This allows them to verify their identity and help reassign the Global Administrator account.

After regain access, please proceed the steps you need (add, remove or edit user, or update the billing information on the account).

I hope the information shared helps point you in the right direction.

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

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Senthil Kumar Kulandaivelayutham 0 Reputation points

2026-09-08T14:58:13.5966667+00:00

I already tried, it is that team which keeps asking for valid email, and they say they are top level escalation and nothing can be done.
Kien 1,145 Reputation points Independent Advisor

2026-09-09T06:02:53.81+00:00

Dear Senthil Kumar Kulandaivelayutham,

Have you created a trial tenant and raise a support ticket?

If yes, did you receive a ID number for your support ticket?

Could you please confirm whether the issue occurred during the administrator verification step?

If the administrator or tenant owner status could not be verified, the case would need to proceed according to the DPT team’s process. As this verification is managed by that team, I do not have the necessary access or authority to make changes or intervene directly.
Senthil Kumar Kulandaivelayutham 0 Reputation points

2026-09-09T13:30:14.4366667+00:00

Yes, ticket is with DPT and still no progress
Kien 1,145 Reputation points Independent Advisor

2026-09-10T02:51:42.02+00:00

Dear Senthil Kumar Kulandaivelayutham,

I sincerely apologize for the inconvenience and frustration this may have caused. I completely understand that the situation may be difficult, and I truly appreciate your patience and understanding. As this matter is under the responsibility of the Data Protection team, we are required to follow their established process and are unable to bypass or directly intervene in their review.