If you want the experience of what Windows 9 could have been, try these safe, official routes instead:
If you want, I can:
Rumors suggest that older programs used code to check if they were running on Windows 95 or 98 by looking for "Windows 9." An official Windows 9 might have caused these programs to crash [3].
There is no verified Windows 9 ISO. There never was.
This is the most common result. The ISO is actually a pre-activated version of Windows 8.1 or 10 that has been backdoored. By the time you finish the installation wizard, your new "Windows 9" machine is already part of a botnet, your browser cookies are being siphoned, and your system is mining cryptocurrency for a stranger.
An official Windows 9 operating system by Microsoft. The company skipped from Windows 8.1 directly to Windows 10 for marketing and technical compatibility reasons.