Microsoft-windows-netfx3-ondemand-package.cab -extra Jun 2026

The exact name of the file varies slightly depending on your processor architecture and system version.

Before running the installation commands, ensure you meet the following requirements:

The is essentially a compressed cabinet file containing the exact payload required to install the .NET Framework 3.5 (which includes versions 2.0 and 3.0) locally on your machine. It is the "offline installer" packaged specifically for the DISM (Deployment Image Servicing and Management) command-line tool.

To avoid the "-Extra" headache across 100+ machines: Microsoft-windows-netfx3-ondemand-package.cab -Extra

To understand the .cab file, we first need to understand how Windows architecture has changed.

System administrators and advanced users rely heavily on this specific Cabinet ( .cab ) file to resolve stubborn installation errors, bypass Group Policy restrictions, and execute rapid offline servicing across enterprise networks. What is the NetFx3 On-Demand Package?

The Microsoft-Windows-NetFx3-OnDemand-Package.cab file contains the payload files required to activate .NET Framework 2.0, 3.0, and 3.5. These legacy frameworks remain critical for running older enterprise applications and specialized software utilities. The exact name of the file varies slightly

Note: The filename might vary slightly depending on the architecture (amd64 for 64-bit, x86 for 32-bit).

Ensure that the path in your DISM command matches exactly where you saved the file.

If you have a Windows 10 or Windows 11 ISO file (which can be downloaded freely from the Microsoft website), you can mount it as a virtual drive. Inside, navigate to the following folder structure: To avoid the "-Extra" headache across 100+ machines:

Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Configuration

DISM is the most reliable tool for servicing Windows images and installing feature packages.