Accessing Outlook on the web for business using organizational credentials.
Hello @Abdallah Suliman
Welcome to Q&A forum!
As per your message, you have lost your phone, so you can't transfer the authenticator for your business email to your new phone. I am so sorry to hear that, and I hope we can work together to move forward with a solution for you.
I understand that you've posted this thread in the Business SAP forum, but I would like to reconfirm your account type to ensure we can provide the most appropriate troubleshooting steps. Please let me know which of the following applies to your account:
- Personal account (e.g., @hotmail.com, @outlook.com)
- Educational account (e.g., @schoolname.edu)
- Business account (e.g., @yourcompany.com or @onmicrosoft.com)
If you are using a "business account", the only way to regain access is to contact your "IT administrator or Global admin" and request a phone number update in the "Microsoft Entra admin center".
In the Entra admin center, an administrator can set user accounts to require a re-enrollment of multi-factor authentication (MFA). Ask your administrator to follow the steps shown in the following article:
Manage user authentication methods for Microsoft Entra multi-factor authentication
- Sign in to Microsoft Entra - Microsoft Entra admin center
- User -> all users. Select the user you want to act on, and then select "Authentication methods". then select "Require multi-factor authentication re-registration".
Require re-enrollment MFA: This disables all previous authentication methods. You'll then be prompted to set up a new MFA authentication method the next time you try to sign in, so you can add a new authenticator app.
If you’re unsure who the Global Admin is within your school account's organization, you can find guidance on locating them here:
How do I find my Microsoft 365 admin? - Microsoft Support
I highly appreciate your valuable time and your cooperation during this process
Please let me know if I can do anything more to support you!
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