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ThomasReimann

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Disabling a device with Devcon.exe

I need to disable a USB device in command line on Windows 7 Ultimate x64.

I've downloaded devcon.exe from here:

http://support.microsoft.com/kb/311272

When I start the 64bit executable I get this:

This version of C:\Work\devcon.exe is not compatible with the version of Windows
 you're running. Check your computer's system information to see whether you nee
d a x86 (32-bit) or x64 (64-bit) version of the program, and then contact the so
ftware publisher.

When I start the 32 bit executable it works.

devcon Usage: devcon [-r] [-m:\\<machine>] <command> [<arg>...]
For more information type: devcon help

I've tried some commands like devcon classes and it seems to work.

Now I want to disable a USB device.

the Hardware id is USB\VID_0BC7

But devcon disable *USB\VID_0BC7* gives:

C:\Work>devcon disable *USB\VID_0BC7*
USB\VID_0BC7&PID_0006\5&2093BC86&0&2                        : Disable failed
No devices disabled.

UAC is off.

Disabling/Enabling this device in device manager works.

I need to get the disable working. An alternate way (without devcon) to disable a USB device by command line will also be accepted.
Avatar of Bill Bach
Bill Bach
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I've not used DEVCON before, but an obvious solution comes to light -- when you spawn the CMD window, right-click it and select "Run as Administrator", which should provide elevated privileges.  Many command-line applications won't spawn a UAC window -- they will just fail.

I think the fact that the x64 version wouldn't run might be a clue here, too.  What if you run the x64 version from the Start/Run command line, instead of from a Command Prompt?
Avatar of ThomasReimann
ThomasReimann

ASKER

I've had of course an Administrator Command Line (the title of the cmd shows Administrator:). If you disable UAC you get always the admin cmd window.

Running the 64bit exe from Start/Run gives the same message, but as a dialog window. I guess the 64bit version has a hardcheck for WindowsXP x64 (devcon.exe is from 2003).

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eerok512
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Downloaded and mounted the iso. There is no WinDDK folder. Searched also for devcon.exe, no results.
Found it after installing setuptools_x64fre.msi.