Hello Everyone. My K40 USB key not recognized after two times of use - and there was no change of the system. Just stop to working with “need key” message. What is the solution? Thanks!

I had this happen to me once and I believe I just changed USB ports. It just worked out that way for some reason. The key may not be sitting in the slot all the way or the key may have gotten corrupted.

If that doesn’t fix it, use K40whisperer instead of the supplied software. It works well (better, in my opinion) and doesn’t need a dongle / key.

Maker Forums

Hello Everyone. My K40 USB key not recognized after two times of use -

Lasers

help, gplus

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