Microsoft-windows-netfx3-ondemand-package.cab -extra Instant

The file is found within the Windows ISO or installation media under the \sources\sxs Where to find microsoft-windows-netfx3-ondemand-package.cab

: Used by IT administrators in SCCM (ConfigMgr) or MDT to package .NET 3.5 as part of an OS image or application deployment, ensuring consistency across a fleet. Microsoft-windows-netfx3-ondemand-package.cab -Extra