Here’s a short, clear explanatory text about "Microsoft‑Windows‑NetFx3-OnDemand-Package.cab" and how to obtain/install it for free:

Step 2: Run the DISM Command

Type the following command and press Enter:

🔧 How to get it (free, legal):

  1. In short, this file is the installation package for .NET Framework 3.5. It contains the necessary system files to enable the .NET 3.5 feature on a Windows computer (such as Windows 10 or Windows 11) without needing to re-download the data from the internet during the installation process.

    : If you'd rather use the standard installer, you can always find the official .NET 3.5 SP1 bootstrapper Microsoft Download Center Do you need help finding this specific file

    This article explains what this file is, why you might need it, and the important safety considerations regarding "free" downloads of system files.

    dism /online /add-package /packagepath:Microsoft-Windows-NetFx3-OnDemand-Package.cab