Microsoft does not provide a direct standalone "download link" for this specific CAB file as a separate file; instead, it is included in the installation media for Windows. How to Get the CAB File
The microsoft-windows-netfx3-ondemand-package.cab file is a required component for installing on Windows 10, 11, and Windows Server in environments without internet access. Because this package is version-specific, there is no single "universal" download link; it is instead natively included in the Windows installation media. Where to Find the Official File
If you have internet access and just need .NET 3.5, you can download the standard installers directly from the :
If you're looking for a specific CAB file, such as the netfx3_ondemand_package.cab , you might be able to find it in the Windows Update Catalog or through other Microsoft-provided resources.