My Windows 10 updated itself this morning and now the notification area (the rightmost part of the taskbar with clock) will only appear on the laptop monitor. The past several weeks it was happily appearing on an external monitor.
I'm on a Surface 4 with two external monitors (both DisplayPorts). Monitor 2 is my main monitor and I've extended the display to the other two. All monitors show taskbars, but the notification area only appears on the Surface. Any ideas?