Windows PC, I'm unable to sign in.

Question

暫くPCにログインせずにおり、諸々アップデートしたところWindowsにPINでログイン出来なくなり、PINの再設定することになった。

その際、WindowsPCのMicrosoft アカウントは最初に作成したgmailアドレスのもので、iPhone の機種変更をしたためAuthenticatorにアドレスが残っておらず使えません。

PCに仕事のデータがあり早急にPCを使う必要があらので、対処方法を知りたい。

Answer 1

If you are unable to sign in to your Windows PC due to issues with your PIN and the Microsoft Authenticator app, here are some steps you can take to regain access:

1. Reset Your Microsoft Account Password: Sometimes, resetting your Microsoft account password can help. You can do this from another device by visiting the Microsoft account recovery page.
2. Use Safe Mode: Try booting your PC into Safe Mode. To do this, restart your PC and hold the Shift key while clicking on Restart. Go to Troubleshoot > Advanced options > Startup Settings > Restart, then select Safe Mode. Once in Safe Mode, try logging in with your Microsoft account password instead of the PIN.
3. Create a Local Account: If you can access Safe Mode, you might be able to create a local administrator account to regain access to your PC. You can do this through the Command Prompt in Safe Mode.
4. Contact Microsoft Support: If you are still unable to access your account, you may need to contact Microsoft support for assistance. They have processes in place to help users regain access to their accounts, especially if you are the only administrator.
5. Use a New Trial Tenant: If you cannot resolve the issue through the above methods, consider setting up a new trial tenant to submit a support request to Microsoft. This will allow you to reach out to support even if you are locked out of your original account.

Make sure to have any necessary information about your locked account ready when contacting support, such as the email address associated with your Microsoft account and any error messages you are encountering.

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References:

• Microsoft Q&A
• Windows Hello errors during PIN creation