i cannot log in my account through teams and authenticator apps in mobile.

Hi @Fatin Kashmeen Shaila Binti Kamarulzaman,

I’ve read through your description, and I’m really sorry to hear about the authentication issue you’re facing. The next steps will depend on whether you’re signing in as an end user or as an administrator. 

1.If you are an end user:  

Please kindly ask your administrator to follow this guide to revoke existing MFA sessions and require re-registration: Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID |…  

What this does is clear any old or stuck sign-in sessions linked to your account. The next time you try signing in, the system will guide you through setting up the Authenticator app again from the beginning. In many cases, this simple reset is enough to get things working normally again, including receiving and generating codes properly.

2.If you are an administrator  

First check if another admin in your organization can reset MFA for you using the steps above. If you are the only admin, please contact Microsoft Support directly by phone:  Customer service phone numbers - Microsoft Support 

In this situation, the Microsoft Data Protection team has tools and processes in place to verify identity and regain access to administrator accounts.  

Here are some tips and an example of a prompt to help you navigate the IVR more effectively:  

(When you call the support number, you may hear an introduction of about 30 seconds such as "you can visit the link...". You can ignore this introduction and wait until you are presented with the options. Then press "1" as a business email user, and again "1" for technical help.)    

In some regions, the initial interaction may be automated, so here’s a general idea of how the conversation might go to help you prepare:      

What kind of problem are you experiencing?         

Answer: Authenticator         

What products do you use?         

Answer: Office 365 for business         

Is this for an education or company account?         

Answer: For companies         

Are you an administrator?         

Answer: Yes         

Are there any other administrators in your organization?         

Answer: No. I am the only admin in my tenant          

Do you need a... Service request?          

Answer: Yes. I need to create a ticket. Please send me direct to the Data Protection Teams.      

During the phone call, you will need to provide the information associated with your subscription, such as your company name, billing details, phone number, and an alternate email address, etc. This information allows the Data Protection team to verify your identity and securely assist you in regaining access to your administrator account.    

Please note that forum moderators have no control over user accounts, especially when it comes to logging in to your account, resetting your password, changing your access, etc 

I truly hope you get your issue resolved swiftly. Please know that even though I can't directly intervene, directing you to the correct and specialized support is the most effective help I can provide from my position.

If you have any updates or additional details, please feel free to leave a comment under this post, I am more than happy to assist further.

Thank you for your patience and understanding.

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