Windows 10 Lite Version 21h2-21h1 Build 1904x.1387 |link| Instant
Enter your BIOS/UEFI (usually F2 or Del during startup) and set Secure Boot to "Disabled." Many Lite ISOs use modified bootloaders that legacy Secure Boot blocks.
Standard Windows 10 installations arrive with dozens of pre-installed applications that many users never open. In this Lite version, the following have been completely purged: windows 10 lite version 21h2-21h1 build 1904x.1387