SQL Server Install | Use Role Management Tool to install Microsoft .Net framework 3.5 SP1

I was trying to setup SQL Server 2008 on my lab machine running on Windows Server 2008 R2. When the setup was installing the prerequisites, the following error message popped up.

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This is a very simple error message, which a DBA would come across often. However the next screen which popped up after this message was interesting.

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Since Windows Server 2008 R2 has the .Net framework 3.5 already available as a feature, all we need to do is just enable that feature. There is no need to download the installer and install it separately.¬†As the error message states, just enable it using the “Role Management Tool”. Role Management tool can be found under Server Manager –> Features –> Add features as seen in the following screenshot.

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That’s all. Now the .Net framework 3.5.1 is installed and ready to use! After this the SQL Server setup completed successfully.

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