.net 3.5 Offline Installer - Windows 11

Copy the ISO to your offline Windows 11 PC (via USB). Double-click the ISO file to mount it as a virtual DVD drive. Note the drive letter (e.g., D: ).

Type the following command, replacing D: with your mounted drive letter: .net 3.5 offline installer windows 11

If you are a developer, a gamer running classic titles, or an enterprise user maintaining legacy software, you have likely encountered the dreaded prompt: “This application requires .NET Framework 3.5.” Copy the ISO to your offline Windows 11 PC (via USB)

Open Command Prompt as Administrator (right-click Start button > Terminal (Admin) > choose Command Prompt). D: ). Type the following command

Inside the mounted drive, navigate to the sources\sxs folder. You should see a file named microsoft-windows-netfx3-ondemand-package.cab . This is the offline source.