After the authenticator uninstall, couldn't get into Teams

Question

After the authenticator uninstall, couldn't get into Teams

nayye JR- 0

Hello, everyone,

I creat a company account, when the sencond to enter the meeting, the system shows a notificatio: you must download a authenticator and scan a special QR code to vertify your account.

Later, I unbind and uninstall the authenticator. Now I want to get into the teams again, It shows, please fill the Verification code, could you help to share any instruction, thanks in advance.

各位好，

前两周，个人免费版在国内无法使用，公司注册了企业版teams。后来企业版登录页面显示：需要使用authenticator扫描QR码然后进行绑定，扫描以后，就解绑卸载了，以为后续可能用处不大。现在今天要开会，打算再次创建连接，显示无法登录，需要输入验证器上得代码，已经绑定该账号，30秒更新一次代码，输入后仍显示错误，目前已无解，麻烦各位如看到，请提供帮助，提前感谢.

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2 answers

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Answer 1

nayye JR- 0

Hi Michelle,

Good afternoon,

Thanks for your feedback, I am the only one in our team, maybe you can think me as the leader. I have submit the “Work Order” about the MFA, but no one contact me. Another, I try to contact your team by telephone, no one reply as well. Could you help to share any helps? Thanks in advance.

Michelle Nguyen 1,755 Reputation points Independent Advisor

2026-09-16T06:49:25.9466667+00:00

Hi @nayye JR-

Thank you for the update. I’m sorry to hear that you haven’t received a response regarding your MFA support request.

Could you please let me know where you submitted the support request? If possible, please provide more details about the platform or page where you created it, this will help me better understand your situation and provide more appropriate guidance.

Thank you.
nayye JR- 0 Reputation points

2026-09-18T01:45:47.16+00:00

Hi Michelle,

Good morning,

I open the Teams Webpage, contact the pre-sales personnel and describe my teams account's problem, they said, they couldn't provide any support; will apply a “Work Order” to solve this issue. No one contact me by now.

Because I couldn't sign my teams account, could you help to apply a new "work order" for me?

The account exist problem: [Moderator note: Personally Identifiable Information removed] @hbjr.onmicrosoft.com Please contact: [Moderator note: Personally Identifiable Information removed] or mail [Moderator note: Personally Identifiable Information removed] @139.com

Best Regards,
Michelle Nguyen 1,755 Reputation points Independent Advisor

2026-09-18T02:22:29.3066667+00:00

Hi @nayye JR-

Thank you for the update.

As far as I know, the pre-sales team is unable to create a technical support ticket directly on your behalf. Please also understand that I am a regular user on this community forum, just like you. I do not have access to internal support systems, so I can only share the information and guidance I have been able to find.

Since this issue involves the only administrator account in the tenant, you will need to contact Microsoft’s Data Protection team for assistance. This is the appropriate team to help with account-access recovery in this situation.

Consider signing up for a trial subscription to create a new tenant. Visit Microsoft 365 Business Plans and Pricing | Microsoft 365.

Once the new tenant is set up, you can access its admin center and submit a support ticket through Microsoft 365 admin center > Support > Help & Support to contact the Data Protection team regarding the previous tenant. Please remember to cancel the trial subscription after your issue is resolved, as this will help you avoid any accidental billing. You may prefer the following resource for detailed instructions: Cancel your Microsoft business subscription in the Microsoft 365 admin center | Microsoft Learn

I hope this helps point you in the right direction. If you have any updates or additional questions, feel free to reply back and I'll do my best to assist further.
nayye JR- 0 Reputation points

2026-09-18T02:31:06.0766667+00:00

Hi Michelle,

Thanks for your support,

Sorry I coun't set a new bussiness account to apply Work order. I don't have any free mail to establish it.

Could you help to share my feedback to technical support department? Thanks in advance.

Best Regards,
Michelle Nguyen 1,755 Reputation points Independent Advisor

2026-09-19T15:21:47.59+00:00

Hi @nayye JR-

Thank you for the update. Since I am only a fellow user on this forum, I can only provide guidance based on the information and experience available to me.

However, in this case, you would just need to register a new email address and then use it to create a trial tenant by following the instructions provided above.

Answer 2

Hi @nayye JR-

Based on your description, it sounds like Multi-Factor Authentication (MFA) is enabled for your account, and the original Authenticator registration may have been removed when you unbound and uninstalled the app. Simply reinstalling Microsoft Authenticator does not always restore the previous MFA registration.

Could you please confirm:

Are you the administrator of the Microsoft 365 tenant, or are there other admins in your organization?
Can you access your account through other methods, such as email, SMS, or backup authentication methods?

If another administrator is available, they can reset your MFA methods from the Microsoft Entra admin center. After the reset, you should be able to sign in again and register a new Authenticator device. You can suggest that they check this article for steps on resetting MFA: Manage user authentication methods for Microsoft Entra multifactor authentication

If you are the only administrator and no authentication methods are available, you may need to contact Microsoft Support for assistance with account recovery. You can find Microsoft's support numbers here: Contact Microsoft customer support | Microsoft Support

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Looking forward to your update.