How to Fix 0x80310031 Error – Bitlocker + TPM + PIN + error code 0x80310031

Error code 0x80310031 occurs when attempting to add PIN protection to BitLocker-protected drives that have already been configured with TPM (Trusted Platform Module) and PIN. This issue affects users who have previously set up TPM+PIN BitLocker but now want to modify their settings or add an additional key protector.

This error can be frustrating, especially when trying to implement a more secure drive protection method. However, by following the steps outlined in this guide, you should be able to resolve the issue and successfully configure your BitLocker setup with TPM+PIN.

💡 Why You Are Getting This Error

• The primary reason for this error is that only one key protector of a specific type (TPM) can be added to a drive. When you try to add another TPM key protector, Windows detects that it's an attempt to add multiple TPM protectors and prevents the action, resulting in the 0x80310031 error code.
• Another possible cause is that the TPM chip on your computer may not support PIN-based encryption. If this is the case, you won't be able to add a PIN key protector even if you've previously set up TPM+PIN BitLocker.

✅ Best Solutions to Fix It

💡 Conclusion

To resolve the BitLocker+TPM+PIN error code 0x80310031, try reconfiguring your Group Policy settings or disabling the existing TPM key protector and then adding a new PIN key protector. By following these steps, you should be able to successfully configure your drive protection method while maintaining its security.