Download Microsoft-windows-netfx3-ondemand-package.cab Extra Quality -

Report: Downloading Microsoft-windows-netfx3-ondemand-package.cab

Executive summary

This report documents the purpose, risks, source verification, download procedure, validation steps, and recommendations for obtaining the file Microsoft-windows-netfx3-ondemand-package.cab, which contains components required for installing .NET Framework 3.5 features on Windows systems where features are obtained on-demand.

1. You are on an offline machine (air-gapped network).
2. Your WSUS (Windows Server Update Services) server does not have the feature.
3. Group Policy disables access to Windows Update.
4. A corrupt component store (DISM errors).

file is specifically tied to your exact Windows version, it is already included on the Windows ISO or installation USB. Microsoft Learn Mount your Windows ISO : Right-click your Windows ISO file and select . Note the drive letter (e.g., Locate the File file is located at :\sources\sxs\ Run Command Prompt as Administrator : Search for in the Start menu, right-click, and select Run as Administrator Execute DISM Command : Run the following command (replace with your actual drive letter): Download Microsoft-windows-netfx3-ondemand-package.cab

1. Place it in an empty folder, e.g. C:\temp\netfx3\
2. Open Command Prompt as Administrator
3. Run:

   dism /online /add-package /packagepath:C:\temp\netfx3\microsoft-windows-netfx3-ondemand-package.cab
   

4. Wait for completion (2–5 minutes).
5. Verify:

   dism /online /get-features | findstr NetFx3
   

   Should show State : Enabled

Get-WindowsFeature -Name NetFx3

Or simply open Control Panel → Programs → Turn Windows features on or off – you should see .NET Framework 3.5 (includes .NET 2.0 and 3.0) checked. You are on an offline machine (air-gapped network)

Prepare the File: Copy the microsoft-windows-netfx3-ondemand-package.cab file to the root of your system drive (usually C:\). file is specifically tied to your exact Windows