While Microsoft now prioritizes the latest version of Windows 10 (currently ), there are still several ways to obtain the 1909 build legally for testing or specialized hardware requirements.
Feature Update via Windows 10, version 1909 Enablement Package windows 10 version 1909 os build 18363 download
Once you have the ISO, you can verify the build using the during or after installation: Windows 10 1909 Final (Build 18363) - GitHub Gist While Microsoft now prioritizes the latest version of