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Microsoft .NET Framework 3.5 service pack 1 contains many new features building incrementally upon .NET Framework 2.0 and 3.0. This update also includes cumulative servicing updates for the .NET 2.0 and 3.0 subcomponents.

.NET Framework 3.5 SP1

For more details on installing .NET Framework 3.5 SP1, see the Readme file.

Instructions

  • Important: Make sure you have the latest service pack and critical updates for the version of Windows on the computer. To look for recent updates, visit Windows Update.
  • Click the Download button on this page to start the download.
  • To save the download to your computer for installation at a later time, click Save.
  • To cancel the installation, click Cancel.

System Requirements

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.

Previous Versions

These downloads include the redistributable package, which installs the common language runtime and associated files required to run applications developed to target the specific versions of the .NET Framework.