A BitLocker recovery key cannot be generated, recreated, or retrieved by Microsoft Support if it was never backed up or is no longer available.
For a non-operational laptop with the drive removed, the supported recovery options are:
- Check whether the recovery key was backed up to the Microsoft account used when BitLocker was activated.
- If the device was ever managed by work or school, check with the organization’s IT department, because the key may have been backed up there.
- If the key was saved manually, look for a printed copy or a USB flash drive where it may have been stored.
- If the drive is connected to another Windows device as a secondary drive, Windows will still require the same 48-digit recovery key to unlock it.
If the recovery key is available, enter the 48-digit key when prompted. If the original device cannot boot, the drive can be connected to another device as a secondary drive for unlock attempts.
If the recovery key is not listed in the account and was not saved elsewhere, access to the encrypted files is not possible. Formatting the drive would remove BitLocker protection but permanently erase the data.
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