For SQL Server to install successfully, the following software components are required on the installation computer. They will be installed by SQL Server Setup:

• .NET Framework version 2.0 SP2 for SQL Server Express
  
• .NET Framework version 3.5 SP1 for SQL Server Express with Tools and SQL Server Express Advanced
  
• .NET Framework version 2.0 SP2 for SQL Server 2008 on Windows Server 2003 (64-bit) IA64 SP1
  
• .NET Framework version 3.5 SP1 for all other editions of SQL Server 2008
  
• SQL Server Setup support files
  
• SQL Server Native Client
  

Note:
These components are not removed if Setup fails or is canceled. To remove them, use Add or Remove Programs in Control Panel.

Note:
Installing .NET Framework 2.0 SP2: .NET Framework 2.0 SP2 is not available as a separate download. You will need to install .NET Framework 3.5 SP1 which includes .NET Framework 2.0 SP2.

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