Bhaskee Posted December 27, 2007 Report Share Posted December 27, 2007 Hi,I have a USB device. It gets enumerated properly. But when I try to connect more than one such identical devices, not all get enumerated. In device manager, it tells something like "Windows cannot load driver for the device as there is a duplicate instance already running". Individually all devices get enumerated, but not together. Again, devices enumerate together properly if connected to PC through a USB hub. I am totally confused with this behaviour. Please tell the problem and possible solution. Quote Link to comment Share on other sites More sharing options...
Irene Posted December 27, 2007 Report Share Posted December 27, 2007 Do you get an error code number when the message is displayed?If so, you may find something useful in the following link....Microsoft: Device Manager Error Code Explanations Quote Link to comment Share on other sites More sharing options...
Bhaskee Posted December 28, 2007 Author Report Share Posted December 28, 2007 Hi,Thanks for the reply.The explanation at the link is not solving the problem(code error 42).Actually I am myself maintaining the driver for that device. So if anyone could suggest, any points of verification in driver code for this issue, would be most welcome. Quote Link to comment Share on other sites More sharing options...
Irene Posted December 28, 2007 Report Share Posted December 28, 2007 The following link is for troubleshooting conflicts...There are other links contained on the page which might well direct you to the help you need. :) Microsoft SupportGood Luck! Quote Link to comment Share on other sites More sharing options...
Bhaskee Posted January 2, 2008 Author Report Share Posted January 2, 2008 The problem is still there. It enumerates three devices if all connected through a USB hub, but fails when devices connected directly to the USB ports(shows the message mentioned in previous replies). Quote Link to comment Share on other sites More sharing options...
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