I need to to install Net Framework 3.5 SP1 on Server 2012 and I know of the method which requires the installation media. Installing .NET framework 3.5 on windows server 2012
However, I do not have the installation media and no Internet. Is there any other way of installing it?
Best Answer
You can download the Windows Server 2012 trial version to get an ISO with the required source files.
Mount the ISO with the inbox ISO mounting and run DISM to install .Net 3.5:
If it fails, also try to run this Update before trying to activate .Net 3.5:
Update for the .NET Framework 3.5 on Windows 8, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2
http://support2.microsoft.com/kb/3005628/en-us
This removes 2 security updates which may prevent setup of .Net 3.5