Microsoft maintains a specific download page for Windows 7, but it operates differently than the Windows 10/11 pages. It usually requires you to enter a product key before allowing the download.
Downloading the ISO is free, but using Windows 7 is not free software. If you install it without a product key, it will function as a trial for 30 days. After that, you will receive activation errors and the desktop background may turn black. To use it permanently, you must purchase a license key from a legitimate retailer. windows 7 iso file download free