Windows 10 version 1809 (the October 2018 Update) reached its official End of Servicing for Pro editions on November 10, 2020. This means it no longer receives critical security updates, making it vulnerable to newer threats.
Gamers often prefer 1809 because it includes Ray Tracing support (DirectX Raytracing Tier 1.1) without the heavier background processes found in later builds. Some benchmarks show a 3-5% FPS improvement over Version 2004 or newer. windows 10 pro version 1809 64bit iso download top
Risks and drawbacks
Microsoft occasionally keeps older builds in its servers for Volume License customers. Try this direct link (change URL parameters if needed): Windows 10 version 1809 (the October 2018 Update)
Result: You now have an official, untouched Win10_1809_Pro_64bit.iso directly from Microsoft servers. Offline industrial PCs Legacy gaming rigs (no internet)