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From: DanT on 17 Feb 2006 17:17
The text of error code 41 is:
"Windows successfully loaded the device driver for this hardware but
cannot find the hardware device. (Code 41)"

The DDK info doesn't say much more. Could someone please explain what
this error means?

I'll describe what I'm trying to do with the hope that it helps. I
have a HID miniport driver that reports a number of hid collections.
These collections in turn show up in the device manager as a number of
"HID-Compliant devices". I am trying to load a filter driver (based on
the toaster filter sample) on top of one of these devices so I can
filter the READ_REPORT irps after they complete.

Thanks!

From: "Martin Borve [MSFT]" on 21 Feb 2006 18:52
For PnP devices, this means that after the driver was loaded for the device
and its DriverEntry was called, there were no device instances listed in
the service key under Enum, or they were all disabled (CM_PROB_DISABLED or
CM_PROB_HARDWARE_DISABLED).

Off-hand I can't think of how a filter driver would cause this type of
problem.

Martin Borve
Windows DDK Support
This posting is provided "AS IS" with no warranties, and confers no rights.


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