, which includes a script to download older Windows ISOs directly from Microsoft's servers. Microsoft Update Catalog:
If at all possible, use Windows 10 22H2 or Windows 11 for security and stability. Only download the 1511 ISO if you understand the risks and have a specific, offline use case. windows 10 version 1511 build 10586 iso
Disclaimer: This article is for educational and archival purposes. Microsoft no longer supports Windows 10 version 1511. Using outdated software without security updates poses significant risk. The author is not responsible for any damage or data loss from following this guide. , which includes a script to download older