I can't believe I am the only person with this problem. Cortana works , more or less, for a day or so and then just suddenly I click on "ask me anything" and nothing happens. Cortana is just plain non-responsive. If I re-boot my machine it starts working again until the next time it dies.

I admit I have an SSD boot drive so it doesn't take too long to re-boot but it is an annoying and recurring problem.