How To Disable SearchUI.exe ( Disable Cortana ) on Windows 10

Open the windows command prompt in administrator mode:

1.   (on yor keyboard press the Windows icon and the letter “x” simultaneously
2. click “Run”
3. Type cmd.exe
4. Right mouse click command prompt icon on your toolbar
5. Right mouse click text “Command Prompt” -> left click “Run as Administrator”
Windows will next ask your permission to run the command prompt as administrator. Click “Yes”
6. Kill SearchUI.exe from the command line to Copy This Commands And past to CMD

   taskkill /f /im SearchUI.exe

7. Finally, rename the Cortana object by “moving” it to another filename. In the below case we’re appending .stop to the name. Important: The entirety of the below is on a single line:

   move %windir%\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy %windir%\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy.stop