: Mount your Windows 10 ISO or insert your installation USB drive. Identify Drive Letter and note the drive letter for the installation media (e.g., Open Command Prompt : Search for in the Start menu, right-click Command Prompt , and select Run as administrator Execute Command : Paste the following command, replacing with your actual drive letter:
: Insert your Windows 10 USB or right-click your Windows 10 ISO and select . Note the assigned drive letter (e.g., Open Administrative Command Prompt : Mount your Windows 10 ISO or insert
Microsoft does not provide a standalone offline installer for .NET Framework 3.5 on Windows 10. The recommended method is the DISM command above. For deployment tools or advanced users, the required files are located at sources\sxs on the Windows 10 installation media. The recommended method is the DISM command above
This is the only supported way to install .NET 3.5 offline starting with Windows 10. right-click Command Prompt
