: Open the .exe file and accept the license terms.
: If you specifically need an older build, tools like Rufus can download official legacy ISOs directly from Microsoft servers.
: You can install Windows 10 without a product key by selecting "I don't have a product key" during setup, though some personalization features will be limited until activated.
: Click Download tool now under the "Create Windows 10 installation media" section.
: Go to the official Windows 10 Download Page .