Devices: Unsigned driver installation behavior

This security setting determines what happens when an attempt is made to install a device driver (by means of Setup API) that has not been tested by the Windows Hardware Quality Lab (WHQL).

The options are:

  • Silently succeed
  • Warn but allow installation
  • Do not allow installation

Policy path: 

Computer Configuration\Windows Settings\Local Policies\Security Options


Warn but allow installation.

Supported on: 

Only Windows XP SP2, Windows Server 2003

Registry settings: 

MACHINE\Software\Microsoft\Driver Signing\Policy

Reboot required: 


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