I was running Fences / Start 10 on my Windows 10.
The Fences seem to cause explorer freeze for long time, or crash out-right.
This happens most often when the screen resolution changes, I.e. when you tab out of full-screen application that is running on different resolutions.
During the freeze, the task bar becomes unresponsive, no system icon shows up, and even the Start 10 does not work.
I’ve disabled the Fences and everything seems to be back to normal.