In Windows 11/10 and TPM 2.0 now, the BitLocker PIN length was increased to 6 characters. Also, the TPM 2.0 lockout period is greater than the default when a PIN is changed.

Input the BitLocker recovery key. Wait until the unlock period expires, and then enter the correct PIN. Reinstall the operating system, and then reset the TPM chip.

First off, I'm running Windows 8.1 and I don't have a TPM. I know all about going under the local Group Policy and disabling the TPM requirement. That's fine, I understand that aspect of it. Where ...