This is the most robust method for the .
To install the on Windows 10 64-bit without an active internet connection, you must use the original installation media's cab files . While the standard offline installer package from Microsoft often requires an internet connection to fetch additional files, using the DISM (Deployment Image Servicing and Management) tool with Windows 10 installation media is the only fully supported offline method. Why You Need .NET Framework 3.5 Net Framework 3.5 Offline Installer Windows 10 64 Bit
In previous iterations of Windows (specifically Windows 7), the installation files for .NET 3.5 were stored locally on the hard drive in the C:\Windows\WinSxS (Windows Side-by-Side) directory. Windows 8 and 10, aiming to reduce the OS footprint, moved this capability to "Features on Demand." The source files are no longer cached locally on the installed OS; instead, they reside on the installation media (ISO or USB) in a folder named sources\sxs . This is the most robust method for the
The most reliable method for installing .NET 3.5 offline involves the Deployment Image Servicing and Management (DISM) command-line tool. This tool allows administrators to service the Windows image directly, pointing to local source files rather than Windows Update. Why You Need