Some common extra files associated with Microsoft-windows-netfx3-ondemand-package.cab include:
Alternatively, if you have the entire sxs folder from an ISO:
This package is essential for running legacy applications that were built on older .NET versions. While .NET 3.5 is typically installed via Windows Update, the .cab file allows for in environments with restricted internet access or when standard installation methods fail. Where to Find the .cab File Microsoft-windows-netfx3-ondemand-package.cab -Extra
The absolute safest way to obtain this specific CAB package is directly from your official Windows Installation Media (ISO):
Navigate to: > Administrative Templates > System . The user’s query includes the suffix -Extra ,
The user’s query includes the suffix -Extra , which aligns with a known discussion point in the Windows community about the contents of the sources\sxs folder. In some Windows versions (like Windows 10 version 1803), the sxs folder might contain than in others. While older builds might only contain the main netfx3 CAB file, newer ones can include extra language-specific versions or other related packages for Internet Explorer. For example, you might see both:
For enterprise air-gapped systems, download the official CAB from the or Visual Studio Subscriptions . Never trust public file-sharing sites. For example, you might see both: For enterprise
The file Microsoft-windows-netfx3-ondemand-package.cab is the core package used to install (which includes .NET 2.0 and 3.0) on modern Windows systems without an internet connection.