Using Unsigned Drivers in Windows 7

A new feature of recent versions of Windows is that they will not allow the use of unsigned drivers.  Unfortunately, driver signing costs money that not every software project can afford.  Fortunately, there is a way to disable the driver signing requirement in Windows 7.  Please keep in mind that disabling the enforcement of driver signing is a security risk, and I am not responsible for any problems it may cause.

To disable the driver signing requirement, open a dos prompt as administrator and enter the following commands:

bcdedit.exe /set loadoptions DDISABLE_INTEGRITY_CHECKS
bcdedit.exe /set TESTSIGNING ON

To check the values of these settings, open a dos prompt as administrator and run:

bcdedit.exe /enum

To undo these settings, open a dos prompt as administrator and run:

bcdedit.exe /deletevalue loadoptions
bcdedit.exe -set TESTSIGNING OFF

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~ by Ryan Lefever on January 23, 2010.

One Response to “Using Unsigned Drivers in Windows 7”

  1. […] Drivers must be signed to use them in Windows 7.  ATT uses unsigned drivers, most likely because driver signing costs money, and Ray Adams is giving ATT away for free!  So, if you want to use ATT, then you need to disable the driver signing requirement in Windows 7.  You can find instructions for doing so at https://arbitraryusefulinfo.wordpress.com/2010/01/23/using-unsigned-drivers-in-windows-7/. […]

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