Leo was in a panic. His internet had gone down during a thunderstorm, and he was right in the middle of installing an old but beloved CAD software his engineering firm still used. The installer had stopped dead with the dreaded yellow triangle:
For Windows 10, the official and most reliable way to install .NET Framework 3.5 (64-bit) offline is to Windows 10 installation media (ISO or USB) "This setup requires
: The complete standalone deployment package. Third-Party Offline Installers Open Windows Features : Press the Windows key
Maria laughed. "Don't download from random sites, Leo. The safest offline installer is already on your Windows 10 installation media or ISO file . It's a Windows feature, not a separate download." Microsoft
: 4/5