"Windows doesn't find 'C:\Program Files (x86)\Arduino\uninstall.exe'. Check that you entered the correct name, and try again"
"Arduino version 1.8.5 is already installed and must be uninstalled before you install this version. This won't affect sketches or libraries in the sketch directory.Click 'OK' to uninstall from : C:\Program Files (x86)\ArduinoClick 'Cancel' if you have files in the install directory that you wish to keep (most users don't). Copy them somewhere else then re-run the installer."