One of the real pains about W10 and its usability is the fact that it (after updates) resets your chosen default apps for browsing, email, music, etc. KB 3135173 - an example. Many reported that apps disappeared, as well. "Stop Resetting My Apps" will prevent this from happening, and it's really simple to use...just click on what you wish to prevent becoming the default app all over again. Of course, you can do it manually by editing the registry, but who wants to play wit...