Microsoft small business knowledge base

Article ID: 894871 - Last Review: August 29, 2007 - Revision: 3.1

Hotfix Download Available
View and request hotfix downloads


When you use the System Preparation tool (Sysprep.exe) and the Sysprep.inf file to update drivers on a Microsoft Windows XP image, and then you use the File Signature Verification tool (Sigverif.exe) to verify that the system files on the computer are digitally signed, Sigverif.exe may report that some drivers are not digitally signed. This problem may sometimes cause driver-related problems during startup.

This problem does not occur if you add the drivers by including the path of the drivers in the OEMPnPDriversPath section of the Unattend.txt file. This problem also does not occur if the drivers are manually updated.


A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: (
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
32-bit editions of Windows XP
   Date         Time   Version            Size    File name
   21-Apr-2005  18:23  5.1.2600.1670     537,088  Msobmain.dll     
   21-Apr-2005  18:23  5.1.2600.1670     941,568  Syssetup.dll     
   21-Apr-2005  18:15  5.1.2600.2659     563,712  Msobmain.dll     
   21-Apr-2005  18:15  5.1.2600.2659     985,600  Syssetup.dll    
   25-Feb-2005  03:53          371,936  Updspapi.dll 
64-bit edition of Windows XP
   Date         Time   Version              Size  File name       Platform
   21-Apr-2005  22:01  5.1.2600.1670   1,811,456  Syssetup.dll    IA-64
   21-Apr-2005  22:01  5.1.2600.1670     941,568  Wsyssetup.dll   x86
   25-Feb-2005  03:50          639,712  Updspapi.dll    IA-64


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional 64-Bit Edition (Itanium)
kbautohotfix kbwinxpsp3fix kbwinxppresp3fix kbqfe kbhotfixserver KB894871
Additional support options
Ask The Microsoft Small Business Support Community
Contact Microsoft Small Business Support
Find Microsoft Small Business Support Certified Partner
Find a Microsoft Store For In-Person Small Business Support