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Event ID 24618 — BitLocker Encryption and Decryption

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Applies To: Windows Server 2008

Whenever the operating system or an application attempts to read from or write to a BitLocker-protected volume, the BitLocker filter driver must decrypt or encrypt data in real time, sector by sector. The filter driver writes event log information when it encounters problems, even if the problem is corrected with an automatic retry of the operation.

Event Details

Product: Windows Operating System
ID: 24618
Source: Microsoft-Windows-BitLocker-Driver
Version: 6.0
Symbolic Name: FVE_METADATA_SUBSET
Message: Metadata check: Metadata record on volume %2 could not be read and has been marked for rebuild. If failures continue, decrypt volume.

Resolve

Rebuild volume metadata by disabling and re-enabling BitLocker

In order to successfully unlock volumes protected with BitLocker Drive Encryption, BitLocker must be able to read information about the volume and the encryption stored on the volume itself, called "volume metadata." BitLocker keeps multiple copies of the volume metadata and verifies the data after each time it is written.

In order to recreate the metadata, disable and re-enable BitLocker by performing the following steps.

Note: If the BitLocker-protected volume is currently unlocked, we recommend copying any important data to a new volume before performing any of the following procedures.

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To disable and re-enable BitLocker to recreate volume metadata:

  1. Click Start, and then click Control Panel.
  2. Click Security.
  3. Click BitLocker Drive Encryption.
  4. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
  5. Click Turn off BitLocker.
  6. Click Disable BitLocker.
  7. In the BitLocker Drive Encryption window, click Turn On BitLocker.
  8. Close the BitLocker Drive Encryption window.

Caution: We strongly recommend that all important data be backed up regularly.

Verify

To verify the correct operation of BitLocker encryption and decryption, read data from and write data to an encrypted volume. The read and write should occur without error.

Caution: We strongly recommend that all important data be backed up regularly.

BitLocker Encryption and Decryption

Core Security