Microsoft KB Archive/895987

= System drive compression causes a driver installation to fail if the driver does not have a digital signature in Windows Server 2003, in Windows XP, and in Windows 2000 =

Article ID: 895987

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Media Center Edition 2002
 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Datacenter Server
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
You compress the system drive on your computer that is running Microsoft Windows Server 2003, Microsoft Windows XP, or Microsoft Windows 2000. If you then update a driver by installing a file that does not have a digital signature, the installation appears to be successful, but the driver is not updated. Alternatively, if you update a driver by installing a file that does not have a digital signature and then compress your system drive, the driver reverts to its earlier version.



CAUSE
This issue occurs because the original driver is protected by Windows File Protection (WFP). When you write to a file that is compressed, WFP replaces the updated file with the previous file that has a digital signature.



RESOLUTION
To resolve this problem, use one of the following methods:
 * When you compress your system drive, do not compress the root directory, and do not compress the Windows directory. In Windows Server 2003 and in Windows XP, the Windows directory is named &quot;Windows.&quot; In Windows 2000, the Windows directory is named &quot;Winnt.&quot;
 * If the original driver is protected by WFP, do not use a file that has no digital signature to update the driver. To obtain a driver update that has a digital signature, contact the company that released the driver.



STATUS
This behavior is by design.

Keywords: kbdriver kbupgrade kbtshoot kbprb KB895987

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