You can stay in “S mode” and install LibreOffice Vanilla from the Windows Store – this version is made by one of our partners, and funds from the purchase price help to improve LibreOffice on Windows.If you’re running Windows 10 in “S mode” but can’t install LibreOffice, here are some options: There are at least 75 million LibreOffice users who have installed the software on Windows 10 without any security or performance issues, so we would like to offer the same possibility to Windows 10 “S mode” users. Certain versions of Microsoft Windows include “S mode” (also known as “Windows 10 S” or “Windows 10S”), which limits the range of software that users can install, and imposes other restrictions.