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麥塊教育版登入時，要求電話簡訊驗證，但卻出現錯誤，無法傳送訊息給電話號碼，錯誤代碼：
Error Code: 399287
Request Id:<PII Removed>
Correlation Id: <PII Removed>
Timestamp: 2025-11-13T02:25:55Z
你好
这个错误意味着Microsoft Entra因为该号码被标记为不良信誉，已屏蔽你的短信验证号码。一旦发生这种情况，无论你重试多少次，短信都不会发送。
请让你的学校或组织的Microsoft 365管理员重置你的MFA，并将你从短信切换到Microsoft身份验证器。
在 Entra 管理中心 ，管理员登录，打开 用户，选择账户，打开 认证方法 或 安全信息，移除 电话 方法，然后选择 “要求重新注册多重身份验证 ”并保存。
之后你再登录一次。当设置界面出现时，选择使用应用进行验证，在手机上安装Microsoft认证器，添加工作或学校账户，扫描屏幕上显示的二维码，批准测试提示，完成登录。使用身份验证器可以完全避免未来Minecraft Education登录时的短信封锁。
<PII Removed>
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Sigh... I'm completely out of ideas. I keep getting errors 2604 and 2603—it's just a constant stream of failures. I've tried switching locations and devices, but nothing works; I even used the school's equipment, and I've tested both my home and the school's internet connections.
我已經打過很多次客服電話，AI語音每次都只給我HTTP://AKA.MS的網址，我依照網址操作後，還是會卡在電話驗證無法發送這個步驟，我對ai語音客服要求請真人客服回電話給我，但AI語音無法執行，仍舊給我AKA的網址，請問該怎麼辦?
wow Admirable courage—going all out just to save the game!
這是麥塊教育版的帳號，怎麼樣才能找到管理員來重置MFA?
我的麥塊教育版是自行購買，不是透過其他教育機構購買的，
所以麥塊登入帳號和登入microsoft 365管理員的帳號相同，
因此無法登入Microsoft 365 用管理員身分重置 MFA
是Minecraft education for commercial，教育版的帳號格式為 個人帳號名稱@組織名稱.onmicrosoft.com
Okay, you are the admin of your own Microsoft 365 tenant, and the sign-in is being blocked at the second factor. Microsoft Entra has flagged your phone number with a bad reputation for SMS, so the text will not be sent no matter how many times you retry. Because you cannot reach the admin portal to remove that phone method yourself, the only workable next step is to ask Microsoft to verify that you own the tenant and clear your MFA from their side.
Please contact Microsoft and ask for the Microsoft 365 Data Protection team. Tell the agent you are the only global admin for a work or school tenant, you are blocked by MFA with SMS error 399287, and you need your MFA methods cleared or a temporary admin access so you can re-register using Microsoft Authenticator.
If you cannot open a case in the admin center because you are locked out, use Microsoft's country phone list and request a callback for Microsoft 365 for business. Keep your tenant name like
orgname.onmicrosoft.com, your sign-in UPN, billing email, and any order or invoice numbers handy. They may ask you to prove ownership, typically by confirming billing data or, if you own a custom domain, adding a temporary DNS TXT record.
<PII Removed>
Once support clears your MFA, sign in and set up Microsoft Authenticator immediately so future Minecraft Education logins do not rely on SMS. If anything is unclear while you are on the phone with Microsoft, paste your notes here and I will help you phrase the request precisely.
