Had to reinstall Windows 10 and Atmel Studio 7.
Now both my programmers AVRISP mkII and JTAGICE mkII don't show in Atmel Studio.
They just appear in Device Manager with an exclamation mark and the following error message:
"Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"
Anyone know how to fix this problem?