Type the following command (replace E: with your mounted ISO drive letter):
Open (right-click Start button → Terminal (Admin) or CMD (Admin)). Type the following command (replace E: with your
Best for: Single users with a stable LAN but slow WAN. Forget the broken web installer
If you have a Windows 10 or 11 ISO/USB but no internet, follow these steps to enable the feature manually: open an admin Command Prompt
Downloading the .NET Framework 3.5 offline installer for Windows 10 and Windows 11 is simple once you understand the tools. Forget the broken web installer. Mount your Windows ISO, open an admin Command Prompt, and use the DISM command provided above.
Before diving into the installation process, it is helpful to understand why this specific version is so persistent. The .NET Framework is a software development platform created by Microsoft. It provides a controlled environment where developers can write code and users can run applications.
You have two ways to install this offline. Choose the method that fits your technical comfort.