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.

BitLocker enables whole-disk encryption to provide efficient, easy-to-implement data protection that systems admins can manage. ... and best practices. Delivered every Monday, ...