This error is commonly caused by TPM (Trusted Platform Module) issues, firmware or hardware changes, or even when OneDrive storage is full, which may interfere with secure boot measurements. Although this security layer helps protect sensitive data, it can result in permanent data loss if the recovery key isn’t readily available. Follow the steps below to restore access to your system:
1. Retrieve BitLocker Recovery Key from Microsoft Account
Microsoft automatically backs up BitLocker recovery keys for devices linked to your Microsoft account. This allows you to retrieve your 48-digit recovery key online, provided the device was previously connected to your account. After verifying your identity, you can unlock your encrypted drive and regain system access.
2. Free up OneDrive Storage to Access BitLocker
If your OneDrive storage is full, it may cause a sync error that Windows misinterprets as a threat, triggering BitLocker recovery mode. Freeing up space resolves these conflicts and disables the false security alert.
