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Windows Server 2008 R2 Cluster validation indicates unsigned acpipmi driver

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Symptoms

When you run the Failover Cluster Validation Wizard, the report indicates that one or more nodes contain an unsigned acpipmi.sys driver. However, the actual driver is a signed driver. The validation warning message may resemble the following:
The node 'node1.contoso.com' has unsigned drivers.
Microsoft ACPI-Compliant Power Meter Device SYSTEM 6.1.7601.17514 6/21/2006 12:00:00 AM Microsoft acpipmi.inf ACPI\ACPI000D\PMI Microsoft ACPI-Compliant Power Meter Device

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Cause

This issue occurs when the acpipmi.inf file is missing from the C:\Windows\Inf folder. The reason why the acpipmi.inf file is missing has not been determined.

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Resolution

To resolve this issue, follow these steps:
  1. On a server that is running the same version of Windows Server 2008 R2, has the same architecture, and the same version of Windows Server 2008 R2 service pack installed, locate the acpipmi.inf file in the following folder:
    C:\Windows\Inf
  2. Copy the acpipmi.inf to a flash drive or to a network share.
  3. On the server that is experiencing this issue, copy the acpipmi.inf file into the following folder:
    C:\Windows\Inf

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Keywords: kbprb, kbexpertiseinter, kbnetwork, kbwizard, kbvalidation, kbsurveynew, kb

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Article Info
Article ID : 2738482
Revision : 1
Created on : 1/7/2017
Published on : 7/25/2012
Exists online : False
Views : 202