Microsoft-windows-netfx3-ondemand-package.cab Download [extra Quality]

Windows will download the required files automatically.

Type the following command and press Enter (replace the file path if you saved it elsewhere): dism /online /add-package /packagepath:C:\Microsoft-windows-netfx3-ondemand-package.cab

Ensure the .cab file matches your Windows version. A .cab from a Windows 10 ISO may not work on a Windows 11 installation.

Once .NET 3.5 is installed, the .cab file is no longer needed for day-to-day operations. However, keep a backup on a network share or USB drive in case you need to repair the installation later.