What device are you working with? Often an upgrade to a newer pack (DFP/TP)
version for MPLAB X IDE is required to support newer devices.
Are you using a Microchip demo board or one of your own design? Have you
followed the guidelines for resistors/capacitors for communications connections? See
3.3 Target Connections.
Are you using a USB hub in your
setup? Is it powered? Some hubs may have compatibility issues with MPLAB
tools. If you continue to have problems, try using the debugger without the hub
(plugged directly into the PC).
Are you using a communication
cable shipped with debugger? If you are using a longer cable, it may have
communications errors. If a longer cable is required, consider another type of
communication. See 3.2 PC Connections.
Are you using the USB cable
shipped with the debugger? Other USB cables may be of poor quality, too long
or do not support USB communication.
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
