Hello MS il was lost my 2FA auth

Loukouri michel ange Daligou 0 Reputation points
2026-11-05T12:06:04.4033333+00:00

Hello MS il was lost my 2FA auth Of m’y company please somebody help me

Microsoft 365 and Office | Subscription, account, billing | For business | Other
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  1. AI answer

    2026-11-05T12:06:57.5933333+00:00

    Ask your company’s IT administrator to reset your Microsoft Entra multifactor authentication (MFA) methods, then register Microsoft Authenticator again on your new phone.

    1. Try an existing backup method

    On the sign-in screen, select Sign in another way. Use any method previously registered, such as SMS, a phone call, passkey, security key, or another Authenticator device.

    If no alternative works, you cannot restore access using only your password; contact the company’s IT administrator. Microsoft also directs users who lost a registered phone to their IT administrator for account recovery.^1^

    2. What your administrator must do

    Send your IT administrator these instructions:

    1. Sign in to the Microsoft Entra admin center with at least the Authentication Administrator role.
    2. Open Entra ID → Users.
    3. Select your user account.
    4. Select Authentication methods.
    5. Select Require re-register MFA, then confirm.

    This removes the old Authenticator registration and other listed MFA methods so that you are prompted to configure new methods at your next sign-in.^2^

    If the phone was lost or stolen, ask the administrator to also select Revoke sessions, which forces reauthentication in active applications.^2^

    3. Register the new phone

    After IT completes the reset:

    1. Sign in again with your company account.
    2. Follow the prompt to configure Microsoft Authenticator.
    3. In Authenticator, select + → Work or school account → Scan QR code.
    4. Complete the test notification.
    5. Open your account’s Security info page and add another method permitted by your company, such as a phone number or passkey.

    Microsoft recommends having multiple sign-in methods so losing one device does not lock you out again.^3^

    If you are the company’s only administrator

    If there is no other Global Administrator or Authentication Administrator:

    Microsoft Support must verify ownership before resetting authentication for a sole administrator.^4^

    Do not share your password, verification codes, or Authenticator approval requests with anyone claiming they can unlock the account.

    References

    1. Set up multifactor authentication for your Microsoft 365 account | Microsoft Support
    2. Manage user authentication methods for Microsoft Entra multifactor authentication
    3. Sign in to your work or school account using two-step verification | Microsoft Support
    4. Urgent Assistance Required – Unable to Access Microsoft Admin Portal Due to Lost Authenticator - Microsoft Q&A
    AI-generated content may be incorrect. Read our transparency notes for more information.

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  2. Liora 3,285 Reputation points Independent Advisor
    2026-11-05T15:11:47.66+00:00

    Dear @Loukouri michel ange Daligou,

    I'm sorry to hear that you have lost access to your company's two-factor authentication (2FA).

    If this is a Microsoft 365 business account, the fastest solution is usually to contact your Microsoft 365 administrator and ask them to reset your MFA methods so that you can register Microsoft Authenticator again.

    Your administrator can follow the guidance in the following article: Manage authentication methods for Microsoft Entra multi-factor authentication

    If you’re unsure who your administrator is, this article may help: How do I find my Microsoft 365 admin?

    User's image

    If you are the sole Global Administrator on the tenant and don’t have access to any other MFA methods, then this becomes a full admin lockout situation. In that case, the only supported way forward is to contact Microsoft Support and request a tenant admin recovery / MFA reset. This request is handled by the Microsoft Data Protection / Identity team, who can verify ownership and unblock or reset the MFA configuration for your account.

    Please try to find the related hotline number to call the frontline let them raise a ticket for you: Customer service phone numbers - Microsoft Support 

    If you choose to contact Microsoft Business Support by phone, you may first be connected to an automated system before contacting a support professional. Based on similar cases of administrator lockouts, the conversation can go something like this:

    Automated system: Are you calling as a private individual or a business customer?

    You: Business customer.

    Automated system: What do you need help with today?

    You: Authentication problem.

    Automated system: Which Microsoft product or service is affected?

    You: Microsoft 365 for business.

    Automated system: Can't sign in to the Microsoft 365 Admin Center?

    You: Yes.

    Automated system: Do you have another administrator in your organization?

    You: No, I'm the only administrator.

    Automated system: Are you a global administrator for the affected tenant?

    You: Yes.

    Automated system: Are you calling about an existing support case, or would you like to create a new one? You: I need to create a new support case.

    In many cases, the automated system will then indicate that it can connect you with a support representative who can help create a support request and forward the case to the appropriate recovery team.

    I would also recommend calling during opening hours when possible. From my experience, it can be difficult to reach the right support queue at times, and automated systems don't always behave as expected. If you can't get through on the first try, consider trying again later or at a different time of day.

    If your organization’s Office 365 Business subscription was purchased through a partner or reseller, and you’re unable to open a service request directly, you may also contact the reseller’s support provider and ask them to open a support request on your behalf.

    Alternatively, you can try set up a new trial tenant and submit your support request, please follow this link to create a trial tenant: Compare Office 365 Enterprise Pricing and Plans | Microsoft 365 - 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 Support > 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.

    User's image

    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.

    If you do create the trial and it resolves the issue, please remember to cancel the subscription afterward to avoid any related charges. This new trial tenant will not give you access to any of the data or settings in your original locked tenant. It is solely a temporary means to contact Microsoft support.   

    I hope my information is helpful.

    Warm regards, 

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