Getting started with the Windows Insider Program - Microsoft
However, for the average user, it is not recommended. The lack of security updates and the availability of far superior, patched versions of Windows 10 make the 19041 ISO a niche product. If you choose to download it from UUP Dump or an archive, always remember to isolate the installation, apply the latest cumulative updates immediately, or keep it strictly inside a virtual machine.
Build 19041 was notable for refining the user experience rather than adding radical new UI changes. Key updates included: