: Build 109.0.1518.140 includes critical backported security fixes (like the CVE-2023-4863 WebP vulnerability) specifically for these older operating systems.
: Despite being "out of support," Microsoft released a critical security update for this version (Build 109.0.1518.140) in September 2023 to patch a major Chromium vulnerability (CVE-2023-4863). Offline Installer Options microsoft edge 109 offline installer portable
Most users download a tiny OnlineSetup.exe file from Microsoft. This file is useless without an internet connection. It downloads the actual browser components from Microsoft’s servers during installation. : Build 109
Some websites like PortableApps.com (official forum) or LibrePortable have historically offered portable wrappers. However, they rarely host version 109 anymore due to it being legacy. You may need to use the (archive.org) to find trusted copies from 2023. microsoft edge 109 offline installer portable