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dotNet framework 3.5 is a SQL Server 2012 prerequisite

06 May,2015 by Tom Collins

When you install SQL Server 2012 on Windows 2012 – one of the prerequisites is .Net framework 3.5.  You may be wondering why .Net 3.5 is installed

1)      Installing .Net framework 3.5 includes .Net framework 2.0 , 3.0 and 3.5.

2)      Starting from .Net 4 , applications requiring lower versions are not supported by .Net 4

3)      It is possible applications require .Net 3.5 . Therefore a separate installation needs to occur of .Net 3.5

4)      Even though you can install .Net 3.5 during the SQL Server 2012 installation it’s easier to make the .Net installation prior to starting the SQL Server 2012 installation

 How to install .Net 3.5 on Windows 2012

1) Open the Server Manager under Admin Tool

2)  Under Manage click on the Add Roles and Features

3) If .NET Framework 3.5 is not displayed, click Add Feature

4) Check the .NET Framework 3.5 under .NET Framework 3.5 Features. Click Next and Install.


How to confirm .Net 3.5 is installed using Powershell using Get-WindowsFeature

Fire up the Powershell admininstration console and execute Get-WindowsFeature


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Author: Tom Collins (


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