Microsoft KB Archive/293335

= No Driver Signing Warning Is Displayed When You Install the Device Driver =

Article ID: 293335

Article Last Modified on 1/15/2006

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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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

Keywords: kbbug kbnofix kbui KB293335

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