I notice you're looking for a "Windows 9 ISO file download." However, — they skipped from Windows 8.1 directly to Windows 10.
Would you like help finding the correct official download for the actual Windows version you need? windows 9 iso file download
Never download an "Windows 9 ISO" from third-party sites. They don't exist legitimately and pose serious security risks. I notice you're looking for a "Windows 9 ISO file download
If you see websites offering "Windows 9 ISO downloads," they are almost certainly that could contain viruses, ransomware, or unwanted software. or unwanted software.