Microsoft Download Center Archive

Microsoft .NET Framework 4 Platform Update 1 - Runtime Update (KB2478063)

  • Published:
  • Version: 4
  • Category: Update
  • Language: English

This is a Platform Update to the Microsoft .NET Framework 4 containing a set of new features addressing top customer feature requests and important .NET Framework scenarios.

  • This Platform Update 1 (PU1) package contains updated runtime files. For further details about the contents of this Platform Update 1 - Runtime Update please refer to the Knowledge Base Article KB2478063.

    After you install this update, you may have to restart your computer.
Knowledge Base Articles:


Status: Deleted

This download is no longer available on The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.

SHA1: d3e7ca814642266ea9adaa3f9379034724ac99c9
3.48 MB
SHA1: 56387908c917bc9cfd990341de5de75bd4149c63
3.49 MB
SHA1: 7e89be10229968ab6a6e92042c48d35a315f910d
3.44 MB

System Requirements

Operating Systems: Windows 7, Windows 7 Service Pack 1, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 SP1, Windows Vista, Windows XP

Installation Instructions

    1. Click the Download button on this page to start the download, or select a different language from the Change language drop-down list and click Change.
    2. Do one of the following:
      • To start the installation immediately, click Run.
      • To save the download to your computer for installation at a later time, click Save.
      • To cancel the installation, click Cancel.

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