You can't install 3rd party programs on Windows 10 S-mode. See the Windows FAQ at https://support.microsoft.com/en-us/windows/windows-10-in-s-mode-faq-851057d6-1ee9-b9e5-c30b-93baebe... for how to permanently get out of S-Mode. Note that once you're out of S-Mode, there's no going back.
