How to Permanently Stop SearchUI.exe from Running in Windows 10

1. Start elevated command prompt. In order to do so, press the Win+X key combination and then choose Command prompt (Admin) from the menu that shows up on your screen.
2. In the command prompt window type these commands one at a time, pressing Enter after each one of them (and be very quick):
   taskkill /f /im SearchUI.exe
   move %windir%SystemAppsMicrosoft.Windows.Cortana_cw5n1h2txyewy %windir%SystemAppsMicrosoft.Windows.Cortana_cw5n1h2txyewy.000
3. If the commands fail at one time, then repeat them many times until the directory is moved successfully.

How to Restore SearchUI.exe Back?

1. Start elevated command prompt. In order to do so, press the Win+X key combination and then choose Command prompt (Admin) from the menu that shows up on your screen.
2. In the command prompt window type this command and press Enter:
   move %windir%SystemAppsMicrosoft.Windows.Cortana_cw5n1h2txyewy.000 %windir%SystemAppsMicrosoft.Windows.Cortana_cw5n1h2txyewy
3. Restart Windows and SearchUI.exe will begin working again.