The safest way to get the .NET Framework 3.5 offline installer is directly from Microsoft. This "Full Redistributable Package" includes all the files needed for a complete installation without further downloads.
Download .NET Framework 3.5 SP1 (Full Package) Version: 3.5 SP1 (Includes .NET 2.0 and 3.0) Size: Approximately 231 MB. The safest way to get the
Starting with Windows 11 Build 28000 and later, .NET 3.5 has moved to a standalone deployment model. You may need specific builds from the official .NET download site depending on your OS version. Starting with Windows 11 Build 28000 and later,
2. How to Install .NET 3.5 Offline via DISM (No Internet Required) How to Install
Standard Windows settings usually try to download these files from the web, but if you have a slow connection or no internet at all, you'll need an . 1. Download the Official Microsoft Standalone Installer