You're looking for a download link for the Microsoft Windows .NET Framework 3.0 On Demand Package CAB file.
This extracts and installs the official Microsoft CAB without needing a separate download link. microsoftwindowsnetfx3ondemandpackagecab download free link
dism /online /add-package /packagepath:"C:\path\to\microsoft-windows-netfx3-ondemand-package.cab"
On-Demand: Specifically designed as a "Feature on Demand" (FOD) for enterprise and server deployments. You're looking for a download link for the Microsoft Windows
Safety and authenticity
Warning: .cab installers for .NET Framework should come from Microsoft only. Do not use unknown third‑party downloads — they can contain malware. Steps below assume Windows 8, 8.1, 10, or 11 where .NET 3.5 is an optional feature or distributed via Microsoft update packages. On-Demand : Specifically designed as a "Feature on
Microsoft does not typically offer this specific .cab file as a standalone "one-click" download from their official website. Instead, it is distributed as part of the Windows Installation Media (ISO) or can be enabled via system tools. How to Get the File Officially
If you tell me your Windows version and build number (type winver in Start), I can confirm the exact installation method recommended for your specific system. Where to find microsoft-windows-netfx3-ondemand-package.cab