Developer account locked

Question

Developer account locked

Tee Guan Pang 20

My developer account ******@xx.onmicrosoft.com is locked and stuck in the loop of authenticator.

I can't get verification code from the phone, error 399287 keeps on appearing.

Sridevi Machavarapu 9,465 Reputation points Microsoft External Staff Moderator

2025-12-13T02:58:57.8866667+00:00
Hello Tee Guan Pang,

I understand you're experiencing issues logging into your Azure account due to MFA. Based on error code 399287, it appears your multi-factor authentication method is blocked because the phone number has a bad reputation.

Could you please share below details via private message so we can further assist?

Tenant ID

Phone number with country code

Country

Email address of affected user

Screenshot of error
Tee Guan Pang 20 Reputation points

2025-12-13T06:58:14.82+00:00

It works now, and able to receive the one time passcode

Answer accepted by question author

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Your answer

Sridevi Machavarapu 9,465 Reputation points Microsoft External Staff Moderator

2025-12-13T02:58:57.8866667+00:00

Hello Tee Guan Pang,

I understand you're experiencing issues logging into your Azure account due to MFA. Based on error code 399287, it appears your multi-factor authentication method is blocked because the phone number has a bad reputation.

Could you please share below details via private message so we can further assist?

Tenant ID

Phone number with country code

Country

Email address of affected user

Screenshot of error
Tee Guan Pang 20 Reputation points

2025-12-13T06:58:14.82+00:00

It works now, and able to receive the one time passcode

Answer 1

Sridevi Machavarapu 9,465 Microsoft External Staff Moderator

Hello Tee Guan Pang,

Thank you for sharing your details (user's email address, tenant id, phone number, country code and country) with us over Private Message

I have reached out to the engineering team to unblock MFA for your account. They have now unblocked it from the backend and removed the bad reputation on it. You should be able to log in to the Azure Portal without any issues.

Please try logging in and check if you can complete SMS authentication without any errors. Let me know if you encounter any issues.

I hope this information is helpful. Please feel free to reach out if you have any further questions.

If the resolution was helpful, kindly take a moment to click on Accept Answer and Yes for was this answer helpful as a token of appreciation.

Sridevi Machavarapu 9,465 Reputation points Microsoft External Staff Moderator

2025-12-13T03:43:44.6566667+00:00

Hello Tee Guan Pang,

If all your concerns have been resolved, I would greatly appreciate it if you could mark the answer as "Accepted" by clicking Accept Answer and Yes for was this answer helpful. This helps both us and others in the community.

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Developer account locked

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