I've done many searches on this problem and it seems it was more prevalent a year ago. However, it just happened to me on one of my devices. One still works. The other doesn't. Suddenly, Cortana stopped responding to certain questions or commands. Like "Can you hear me?" She used to say "I can hear you." Or "Tell me a joke." Now, she opens an Edge search page. She still responds to certain commands like "Open Program X." I have tried every solution that I found. None have worked. I even restored the computer to a date of weeks ago. Now, she tells jokes but the other stuff still doesn't work. I know this is not critical. But it should work and I don't know why it stopped working. Cortana has always been a little flaky but never this bad. Does anyone know anything I can try? Thanks.