How to Hide System Tray Windows 10

Hide Tray Temporarily

There are two ways to hide the system tray. First is the temporary fix which goes like this:
 1. If you cannot see all the items that you need in the tray, just click right under the arrow.
 2. Now, if all the icons are present, go ahead and open the task manager (CTRL+ALT+DEL), then terminate GWUX/GWXUX Process.

 Hide Tray Permanently 

Now, if you really feel like you’re not ever going to use the tray, you can hide it permanently by doing the following:
 1. Go to Control Panel > Windows Update.
 2. Choose Installed Updates on the left side of the screen, followed by View Installed Updates. You’ll now seeInstalled Updates on top of the screen.
 3. When you see the update labeled Update for Microsoft Windows KB3035583, go ahead and remove it.
 4. Just skip this update if it shows up another time, just in case.