Laptop device encryption failing with error
4.5
A specific error code appears when trying to encrypt the drive.
Symptoms
- Error code (e.g., 0x8031005b)
- Encryption cancels
- TPM error
Possible Causes
- TPM lockout
- BIOS version
- Drive partition issue
Step-by-Step Fix
1
Clear TPM
Reset the TPM chip in BIOS or tpm.msc.
2
Update Drivers
Ensure chipset and TPM drivers are current.
3
Check Event Viewer
Look under "Applications and Services Logs" > "Microsoft" > "Windows" > "BitLocker-API".
When to See a Technician
The BitLocker-API logs in Event Viewer will give you the most detailed reason for the failure.
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