Hi, when using ULINK to download or debog code to a XC866 Starter Kit i always get the message "JTAG Communication Failure". But i only get the message when the ULINK is connected to my notebook. The problem doesn't appear when I connect it to a Desktop PC. I disabled the Energy safety option in the hardware device manager but the problem is still there. Forthermore, the ULINK gets the 5 Volt supply voltage from the USB-Host. Thanks for your Help Greets Frankie