Cant put pc pin its usine old email

Select Sign-in options on the Windows 11 sign-in screen and try the Microsoft-account password; the Windows Hello PIN is device-specific and is different from that password.^1^

A BIOS update can change or reset the TPM security information used by Windows Hello, causing Windows to require identity verification before creating a new PIN.^2^

Try these options in order

1. On the sign-in screen, select Sign-in options.
2. Select the password icon and enter the password for the old Microsoft account.
3. If available, select I forgot my PIN and follow the prompts. This option works for Microsoft accounts, but resetting the PIN still requires account verification.^1^
4. If Windows displays I don’t have any of these on the identity-verification screen, select it and replace the inaccessible email or phone information. Replacing all security information places the account into a restricted state for 30 days; the PIN can be reset after the new information becomes active.^2^

The old Microsoft account cannot simply be removed from the PC while it remains locked. Access must first be proven using its password, an existing verification method, or the security-information replacement process.

If the email address or account is uncertain

Use another phone or computer to run Microsoft’s sign-in helper. It can identify the appropriate recovery path for the email address or phone number entered.^3^

If the exact address was forgotten, Microsoft can show a masked username when a recovery phone number or email is available.^4^

If the account has not been signed into for more than two years, it might have been deleted and may no longer be recoverable.^3^ Since you may not remember enough information for the recovery form, do not repeatedly submit guesses; use the sign-in helper and the I don’t have any of these route if offered.

Last resort: reset Windows

If account verification is impossible and no other Windows administrator account exists, reset the PC and create a different Microsoft account:

1. At the sign-in screen, hold Shift.
2. While continuing to hold it, select Power → Restart.
3. In Windows Recovery Environment, select Troubleshoot → Reset this PC.^5^
4. Choose Keep my files first. It reinstalls Windows and removes installed applications and settings, but preserves personal files. Remove everything also deletes personal files.^6^
5. Complete setup using a new Microsoft account that you can access.

Important: If device encryption or BitLocker is enabled, Windows Recovery may request the BitLocker recovery key. Do not begin a reset until you understand the data impact; anything important should be backed up first where possible.^6^

Do not clear the TPM or change more BIOS security settings: the existing PIN is already unavailable, and those actions will not restore access to the old Microsoft account.

References

1. Change or reset your Windows Hello PIN
2. Microsoft account locked out my PC - Microsoft Q&A
3. I can't sign in to my Microsoft account | Microsoft Support
4. Forgotten your Microsoft account username | Microsoft Support
5. Recovery options in Windows | Microsoft Support
6. [Windows 11](https://support.microsoft.com/windows/experience/backup-recovery/reset-your-pc#summary)