Event ID 4 — TPM Driver Operation

Applies To: Windows Server 2008

This version of Windows includes a device driver that allows the TPM Base Service (TBS) to communicate with and share the use of a Trusted Platform Module chip in the computer. Any failures in communication with the TPM or unexpected results cause the TPM driver or the TBS to log event messages.

Note: The BitLocker Drive Encryption feature uses the TPM by default.

Event Details

Product: Windows Operating System
ID: 4
Source: TPM
Version: 6.0
Message: The TPM's activeLocality bit has been cleared.


This is a normal condition. No further action is required.

TPM Driver Operation

Core Security