Bitlocker recovery key

Question

Hi

I've entered my bitlocker recovery key for my surface Pro8 device and yet unable to login. It keeps rejecting the key.

Unable to access my device and my account on the device.

Please help

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Moved from Microsoft 365 and Office | Other

Answer 1

Option 1: make sure you are using the correct BitLocker recovery key.

Each BitLocker‑encrypted drive has its own Recovery Key ID. If the Key ID shown on the recovery screen does not match the key you are entering, Windows will reject it every time.

On another device:

• Go to https://account.microsoft.com/devices/recoverykey
• Sign in with the Microsoft account used on the Surface
• Locate the recovery key whose Key ID exactly matches the one shown on the Surface screen

If the Key ID does not match, that recovery key will never work.

Option 2: If the Key ID matches but the recovery key is still rejected, try unlocking via Command Prompt (this often works when the UI does not).

On the BitLocker recovery screen:

1. Select Advanced options
2. Go to Troubleshoot → Advanced options → Command Prompt

At the command prompt, run:

manage-bde -status

Confirm the OS drive letter (usually C:), then run:

manage-bde -unlock C: -rp YOUR-48-DIGIT-RECOVERY-KEY

If the drive unlocks successfully, immediately run:

manage-bde -protectors -disable C:

Then restart the device.