Overview

The .NET Framework 3.5 SP1 is a prerequisite for SQL Server 2008. Microsoft .NET Framework 3.5 SP1 comes with Windows Server 2008 R2 and has to be installed as a Feature through the Server Manager.

Process

In Windows Server 2008 R2, install and enable the .NET Framework as follows:

1. Click Start > Administrative Tools and select Server Manager.

2. Click Features to display all the installed Features in the right-hand pane.

3. If .NET Framework 3.5.1 feature is not listed, click Add Features.

   

4. Locate .NET Framework 3.5.1Features, and select its respective checkbox.

   

5. Click Next.

6. Confirm installation selections, then click Install.

   Note: SQL Server 2008 Setup for standalone instance installs the .NET Framework 3.5 SP1, if not already installed.

   

7. Verify the .NET Framework 3.5 SP1 installation.

   1. On the Start menu, choose Run.

   2. In the Open box, enter regedit.exe. You must have administrative credentials to run regedit.exe.

   3. In the Registry Editor, open the following subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP

      The installed versions are listed under the NDP subkey. The version number is stored in the Version entry. For the .NET Framework 4, the Version entry is under the Client or Full subkey (under NDP), or under both subkeys.

Note: The NET Framework Setup folder in the the registry does not begin with a period.