Microsoft KB Archive/817434

= Windows Removes Read-Only Driver Digital Signatures When You Restart with &quot;Last Known Good Configuration&quot; Option =

Article ID: 817434

Article Last Modified on 2/22/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional for Itanium-based systems
 * Microsoft Windows XP Professional for Itanium-based systems

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SYMPTOMS
If your computer is running Microsoft Windows XP Service Pack 1 (SP1) and if you install a driver from read-only media (for example, from a CD-ROM), the driver files are marked as read-only. If you later select Last Known Good Configuration from the Windows Advanced Options menu when you start your computer, the digital signatures for the drivers are removed. The Device Manager then indicates that the driver is unsigned.



CAUSE
This problem occurs because the read-only driver files are also stored in the Windows\Lastgood.tmp folder, and zero-length OEM .inf files are left in the Windows\Lastgood.temp\Inf folder. If these driver files and OEM .inf files are deleted before you run Last Known Good Configuration, the problem does not occur.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) 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.

Windows XP
  Date         Time   Version        Size       File name --  21-Mar-2003  23:56  5.3.16.5          24,576  Xpsp1hfm.exe 13-Dec-2002 01:08  5.1.2600.108   1,848,320  Ntkrnlmp.exe 13-Dec-2002 01:09  5.1.2600.108   1,902,080  Ntkrnlpa.exe 13-Dec-2002 01:09  5.1.2600.108   1,874,944  Ntkrpamp.exe 13-Dec-2002 01:08  5.1.2600.108   1,879,936  Ntoskrnl.exe 15-Nov-2002 22:05  5.1.2600.106      99,840  Services.exe 25-Mar-2003 18:05  5.1.2600.1190  1,895,936  Ntkrnlmp.exe 25-Mar-2003 18:05  5.1.2600.1190  1,951,744  Ntkrnlpa.exe 25-Mar-2003 18:05  5.1.2600.1190  1,923,584  Ntkrpamp.exe 25-Mar-2003 18:05  5.1.2600.1190  1,927,936  Ntoskrnl.exe 18-Dec-2002 02:20  5.1.2600.1152     99,840  Services.exe

Windows XP 64-Bit Edition
  Date         Time   Version        Size       File name -  21-Mar-2003  23:55  5.3.16.5          59,904  Xpsp1hfm.exe  IA-64 13-Dec-2002 01:09  5.1.2600.108   5,734,400  Ntkrnlmp.exe  IA-64 13-Dec-2002 01:09  5.1.2600.108   5,677,568  Ntoskrnl.exe  IA-64 15-Nov-2002 22:07  5.1.2600.106     330,240  Services.exe  IA-64 25-Mar-2003 18:05  5.1.2600.1190  5,827,584  Ntkrnlmp.exe  IA-64 25-Mar-2003 18:05  5.1.2600.1190  5,737,856  Ntoskrnl.exe  IA-64 18-Dec-2002 03:23  5.1.2600.1152    330,240  Services.exe  IA-64



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows XP Service Pack 2.

Keywords: kbbug kbfix kbqfe kbwinxpsp2fix kbwinxppresp2fix kbhotfixserver KB817434

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