Installing the .NET Framework 3.5 on Windows 8.1 64-bit requires an offline installer, which can be downloaded from the Microsoft Download Center. By following the steps outlined in this article, you should be able to successfully install and enable the .NET Framework 3.5 on your system.

If you’re running Windows 8.1 64-bit and need to install the .NET Framework 3.5, you may encounter some challenges. By default, Windows 8.1 comes with the .NET Framework 4.5 installed, but not the .NET Framework 3.5. In this article, we’ll show you how to install the .NET Framework 3.5 on Windows 8.1 64-bit using an offline installer.

Installing .NET Framework 3.5 on Windows 8.1 64-bit: A Step-by-Step Guide**