Early in the development of Windows 10, some internal builds were referred to as "Threshold." Some of these leaked builds (like Build 9834) are occasionally labeled as Windows 9 Technical Previews in archive collections, even though they were early versions of what became Windows 10. 3. Potential Security Risks
For a secure and supported experience, you should download official ISOs directly from Microsoft's Software Download page : Download Windows 11 - Microsoft windows-9-telecharger-la-version-complete-iso-softfiler
: Some enthusiasts created "concepts" of what Windows 9 might have looked like, packaging them as installable ISOs. 2. Leaked Technical Previews Early in the development of Windows 10, some
If you find a download for a "Windows 9 ISO version complète," it is almost certainly one of the following: 1. Unofficial Community Modifications and bundled software.
: Often a modified version of Windows 7 Ultimate or Windows 8.1 with custom themes, icons, and bundled software.