The Microsoft-Windows-NetFx3-OnDemand-Package.cab is a vital tool in the belt of any IT administrator. While it remains hidden in the sources\sxs folder of most installation media, knowing how to utilize it allows you to bypass network restrictions and solve stubborn installation errors.
In many support threads (Reddit, TechNet, Spiceworks), users paste filenames with spaces or extra dashes by mistake. The actual file should have and no trailing -Extra . Microsoft-windows-netfx3-ondemand-package.cab -Extra
The Microsoft-windows-netfx3-ondemand-package.cab package is required for several reasons: The Microsoft-Windows-NetFx3-OnDemand-Package