I am running the .NET 3.5 offline installer on windows 8.1 from Microsoft .NET Framework 3.5 Service pack 1 (Full Package) . Though, when I run this exe, it still prompts me to install from windows update. The same thing happens with the pre-service pack installer.
Even if I am connected to the internet, the download never completes and freezes on 'Downloading required files'
Does anyone have any insight to what could be wrong?
Edit: Daniel B brought to my attention that this package is not supported for windows 8.1. I will be taking the route of installing via the windows 8.1 ISO.
Supported Operating System
Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
A Microsoft MVP explains this process here: How to enable .NET Framework 3.5 on Windows 8 in Offline Mode