Uninstalling and Reinstalling Signed Third-Party Driver Generates "Unsigned Driver" Message (257300)


The information in this article applies to:

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Professional
This article was previously published under Q257300

SYMPTOMS

If you have a third-party driver that was installed by using the OEMPNPDriversPath mechanism in an Unattend.txt file, uninstalling the driver and then reinstalling it may cause Windows to display a dialog box stating that the driver is not digitally signed. This occurs only on system volumes that use the FAT or FAT32 file system. The problem does not occur with the NTFS file system.

CAUSE

This behavior is caused by a problem in the Setupapi.dll dynamic-link library (DLL).

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack


STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 1.

MORE INFORMATION

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Modification Type:MinorLast Reviewed:9/23/2005
Keywords:kbHotfixServer kbQFE kb3rdparty kbbug kbfix kbWin2000SP1Fix KB257300
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