Once you've downloaded the offline installer, follow these steps:
: If you need to run an application that requires .NET Framework 3.5, download and install it using the offline installer. However, consider updating to a newer version of the .NET Framework or the application itself, if possible, to ensure you have the latest security features and compatibility. Once you've downloaded the offline installer, follow these
use Method 1 (DISM) as the framework files are already technically present in the Windows "Side-by-Side" ( ) folder on your installation media. www.microsoft.com Once you've downloaded the offline installer