Install .NET Framework 3.5 on Windows 10 offline

One of the biggest annoys I faced after a fresh install of Windows 10 on my computer was the installation of the .NET Framework 3.5 feature on it. First let's see why do we (still) need .NET framework 3.5 even when Windows 10 comes with .NET Framework 4.5 installed already. The .NET Framework is an integral [...]