Microsoft regularly alters or decommissions backend endpoints for older software. Web installers frequently fail with "Missing Package" or "Download Failed" errors because the URLs hardcoded into the setup file no longer exist.
The answer is . Many enterprise environments, manufacturing systems, and embedded device projects (think Windows CE, older .NET Framework versions, or specific C++ runtimes) are still locked to this toolchain. visual studio 2015 update 3 offline installer
: The ISO file is approximately 6-7 GB . Once downloaded: older .NET Framework versions
Visual Studio 2015 Update 3 Offline Installer: A Complete Guide visual studio 2015 update 3 offline installer