The Internet Archive hosts "Windows 10" software collections where users have uploaded original MSDN ISOs.
For IT professionals and businesses:
When you download and install the , you gain access to features that were either new or significantly improved at the time: Windows 10 Version 1511 Build 10586 Iso Download
You can use the , a trusted open-source tool that pulls files directly from Microsoft's servers, or utilize direct links if you can find the specific Language and Architecture (x64 or x32) combination. The Internet Archive hosts "Windows 10" software collections