This was definitely a MC update waiting, but maybe there is a pending Windows update also. I will check.
Last Windows update was 3/12 and there was an update available but I do not think it had been downloaded. So, I do not think it was Windows.
And, once I installed the MC update, Gizmo worked again.
This only happens occasionally so is not a big issue but thought I would report it. It just takes me some time to figure out what is happening. Next time, if I remember, I will try JRemote 3 also.
Thanks.