| Event Id | 24599 |
| Source | Microsoft-Windows-BitLocker-Driver |
| Description | The TPM was not enabled during restart. |
| Event Information | According to Microsoft : Cause : This event is logged when the TPM was not enabled during restart. Resolution : Turn on the Trusted Platform Module BitLocker entered recovery, and a user has successfully completed the recovery process by using a recovery key (stored on a USB flash drive) or a recovery password (entered manually at the recovery screen). The most recent recovery session, in which no Trusted Platform Module (TPM) could be found, can be caused by circumstances such as: Using the TPM Management Console to turn off the TPM BIOS configuration that "hides" the TPM from Windows TPM or motherboard hardware failure or replacement Moving the encrypted volume to a new computer that does not contain a TPM If you turned off the TPM in the TPM Management Console or the BIOS, use the same tool to turn on the TPM. If the TPM or motherboard has been replaced, or you have moved the volume to a new computer, disable and re-enable BitLocker to use the new TPM. 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: 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. Verify : To verify that BitLocker has started successfully: 1.If the computer is not running, start the computer. 2.If BitLocker has been configured to use a USB flash drive, insert the USB flash drive. If BitLocker has been configured to use a PIN, enter your PIN when prompted. 3.Verify that Windows Welcome Screen, Logon Screen or Desktop appears. This indicates that BitLocker has correctly unlocked the Windows operating system volume. 4.Log on to Windows and access any data volumes that are encrypted with BitLocker. Note: Data volumes can be configured to be automatically unlocked or to require manual unlocking. |
| Reference Links | Event ID 24599 from Microsoft-Windows-BitLocker-Driver |
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