Matrix user forums

If you have other devices thats using the mchpusb64.sys or mchpusb.sys
flowcode can run into problems when you presse reset for programming.

Look into devicemanager, under the tab "Custom USB Devices" -
If there is a "Microchip Custom USB device" active you can have the problem.

My device i a Mplab Real ICE programmer, and i have to unplug it to use FlowCode Programmer.

Hello,

Yes this is a limitation of the Microchip system file that is responsible for controlling the USB transactions. Unfortunatley there is not a lot we can do about this short of getting Microchip to re-write their system file which I don't really think is going to happen. At least not in the near future.