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System Requirements

Microsoft .NET Framework 3.5 contains many new features building incrementally upon .NET Framework 2.0 and 3.0, and includes .NET Framework 2.0 service pack 1 and .NET Framework 3.0 service pack 1.

Component Requirement
Supported Operating Systems Windows Server 2003; Windows Vista; Windows XP
Processor 400 MHz Pentium processor or equivalent (minimum); 1 GHz Pentium processor or equivalent (recommended)
RAM 96 MB (minimum); 256 MB (recommended)
Hard Disk Up to 500 MB of available space may be required
CD or DVD Drive Not required
Display 800 x 600, 256 colors (minimum); 1024 x 768 high color, 32-bit (recommended)

Important: If you have installed earlier pre-release versions of .NET Framework 3.5, then you must uninstall them prior to running this installation by using Add or Remove Programs.

Download Previous Versions

For System Requirements for previous versions of .NET Framework, refer to their specific download page.