Windows 7 remains one of the most beloved operating systems in history. Even though Microsoft ended official support in January 2020, many users still require it for legacy software, older hardware, or specific industrial applications.

Technically, you can download the ISO for free, but to activate it legally, you need a genuine product key. Without a key, Windows 7 will function for 30 days before entering a "non-genuine" state with a black desktop background and persistent activation messages.

However, if you need Windows 7 SP1 64-bit for a specific offline purpose (legacy software, testing, or an air-gapped PC), here is the official source:

the installer file (windows6.1-KB976932-X64.exe). Follow the on-screen instructions.