Unable to Verify Identity for Azure Login – Error 399287

Question

Dear Microsoft Support Team,

Here I could not access to tenant. Since this is personal tenant my guess is its been blocked due to long time no access.

I know the tenant is not been deleted because deployed service is still running and I am still able to pay via credit card.

I know the tenant is personal and should use additional MFA setups. But in my case I believed since the service running I there should not have any issue. But few months after i acknowledged its due to account lockout on my phone number, this is also my guess.

Now I started recieving email to Renew Payment Method, I am afraid service may i get interrupted.

Below is detailed info.

Troubleshooting details

If you contact your administrator, send this info to them.

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Error Code: 399287

Request Id: [Moderator note: personal info removed]

Correlation Id: [Moderator note: personal info removed]

Timestamp: 2026-07-07T13:21:03Z

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Answer 1

Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.

Hi @Tulgaa P

First, I'd like to clarify that we're not Microsoft support, this is a user-to-user support forum. Moderators have no backend access and cannot directly intervene in Microsoft products. We provide only technical guidance and best-practice recommendations based on reported issues.

In this case, does your tenant have additional Global Admin? If yes, you can ask them to reset your MFA method so you can register again. Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID |…

If not, you will need to contact Data Protection team. They will be able to help you regain access to your tenant.

In this situation, there are two official paths you can take to regain access to the tenant:

1.Please visit the following page and reach out to phone number via: Customer service phone numbers - Microsoft Support

From what I know, you will need to get past the initial AI system to reach the live support team. You can refer to the guide below for tips on how to get through more easily:

2.If method 1 is not working, please follow this link to create a trial tenant: https://www.microsoft.com/en-us/microsoft-365/business/microsoft-365-business-basic?msockid=3eb6980b5c6860e63a588d0c5d1761d6 - after that you will be able to access to Microsoft 365 Admin Center to raise the ticket

Assuming that you have already created an account after registering a free trial and you can go to Microsoft 365 admin center and click "Help & support" icon to raise your ticket. The agent will be able to create a ticket for you under the affected tenant and then transfer this ticket to Data Protection team who could help you to regain access.     

Please mention that you are raising ticket on behalf of the affected tenant that you do not have access to. The support team will help you to create ticket on the affected tenant then later on the Microsoft Data Protection team will assist you.

Note: This process will take more time than usual (7-14 working days) for your account to get access again as Data Protection is always overwhelmed with the number of tickets. As I am forum moderator, I do not have access to Microsoft internal system to assist or push this process to be quicker.

On the other hand, if you do create the trial and it resolves the issue, please remember to cancel the subscription afterward to avoid any related charges. 

I hope my information is helpful. Please give me any updates once you get this resolved.

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