How do you remove Windows 10 tray item?

#1:

To remove KB3035583, first open Windows Update and click “Installed Updates” in the bottom-left corner. To quickly find KB3035583, you can sort by name. Once you’ve located it, right-click and choose “Uninstall”.

#2:

Run regedit and goto key HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Gwx. Once you are there, create a new 32-bit DWORD value on the right-hand side named DisableGwx, and give it a value of 1.