The public release of Windows 10 version 1507 (build 10.0.10240) was . The final build was made available to Windows Insiders for final testing on July 15, 2015, before its global launch. The original release marked a pivotal moment in modern computing, shifting Microsoft to a more iterative, service-oriented model for its flagship operating system.

Find Windows 10 Information and locate the 2015 release (Version 1507). Download the ISO legally.

Running any software version that is no longer receiving security patches from its developer is like leaving your front door wide open. For Microsoft, the lifecycle of an operating system version is the period during which it is officially supported with security updates. Once a version reaches its "End of Life" (EOL), it stops receiving these patches. This means any new vulnerabilities or security exploits discovered after that date will never be fixed.

Insert the USB drive into the target computer, restart, and enter the boot menu (usually F12, F2, F10, or Del).

Tools like Rufus can be used to directly download older Windows 10 ISOs from Microsoft's official servers. This is a good alternative if the MediaCreationTool.bat script is not working for you.