S mode is not a new idea as it has already been introduced in Windows 10. This same feature is being implemented in Windows 11. It works as a security function on devices such as Samsung laptops, certain Surface tablets, etc. Moreover, it improves performance and security while simultaneously offering you the analogous Windows experience.
This mode does not allow the installation of third-party apps on a device. Specifically, apps like classwork applets, Chrome, and Zoho Assist cannot be installed on the PC. Though this mode ensures security, it does not provide adequate freedom on the installation of third-party applications.
The S mode would not allow people to install any third-party programs outside of the Microsoft Store when enabled. If you intend to install any software or app, you can do that through Microsoft App Store. Though plenty of apps are available on this store, plenty of frequently used and popular software is not yet available. You cannot download and install software like MSI or EXE files, digitally signed or not.
Image Source: Microsoft Docs
Essentially, S mode adds a layer of security by not allowing people to install software from anywhere. The team manually validates all games and apps available on Microsoft before making them accessible.
For downloading and installing programs from third-party sources, you must turn off S mode. Furthermore, make sure antivirus software is installed on your computer so that the laptop stays free from virus infection.
Switching a Windows 11 device out of S mode requires internet connectivity. This mode is only available for Windows 11 Home edition.
Two methods are available for the same, as follows: