No Driver Signing Warning Is Displayed When You Install the Device Driver (293335)


The information in this article applies to:

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
This article was previously published under Q293335

SYMPTOMS

When you install a non-Plug and Play device driver, you may not receive a Driver Signing message that warns you about the device driver being unsigned.

The Driver Signing feature is included in Windows to help promote driver quality. This feature can notify a user whether or not a driver that the user wants to install has passed the Microsoft certification process.

CAUSE

This problem can occur because the Driver Signing feature that displays a warning about unsigned drivers is currently available only for Plug and Play device drivers.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

A Driver Signing policy can apply to the device classes listed in the Certclas.inf file. If you use the SetupAPI program, but you do not install a device driver class that is from the Certclas.inf file, you may have to follow a Non-Driver Signing policy.

The drivers in the Certclas.inf file are:

[DriverSigningClasses]
{4D36E966-E325-11CE-BFC1-08002BE10318} ; Computer
{4D36E968-E325-11CE-BFC1-08002BE10318} ; Display
{4D36E96B-E325-11CE-BFC1-08002BE10318} ; Keyboard
{4D36E96A-E325-11CE-BFC1-08002BE10318} ; HDC
{745A17A0-74D3-11D0-B6FE-00A0C90F57DA} ; HID
{6BDD1FC6-810F-11D0-BEC7-08002BE2092F} ; Image
{4D36E96C-E325-11CE-BFC1-08002BE10318} ; Media
{4D36E96D-E325-11CE-BFC1-08002BE10318} ; Modem
{4D36E96E-E325-11CE-BFC1-08002BE10318} ; Monitor
{4D36E96F-E325-11CE-BFC1-08002BE10318} ; Mouse
{50906CB8-BA12-11D1-BF5D-0000F805F530} ; MultiPortSerial
{4D36E972-E325-11CE-BFC1-08002BE10318} ; Net
{4D36E979-E325-11CE-BFC1-08002BE10318} ; Printer
{4D36E97B-E325-11CE-BFC1-08002BE10318} ; SCSI Adapter
{50DD5230-BA8A-11D1-BF5D-0000F805F530} ; Smart Cart Reader

Modification Type:MinorLast Reviewed:1/15/2006
Keywords:kbbug kbnofix kbui KB293335
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