Legacy Update: Get back online, activate, and install updates on your legacy Windows PC

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.

Files

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

File	SHA1 Hash	Size
NDP40-KB2478063-IA64.exe	d3e7ca814642266ea9adaa3f9379034724ac99c9	3.48 MB
NDP40-KB2478063-x64.exe	56387908c917bc9cfd990341de5de75bd4149c63	3.49 MB
NDP40-KB2478063-x86.exe	7e89be10229968ab6a6e92042c48d35a315f910d	3.44 MB

• 
  Note: More information about Service Pack levels currently supported for the platforms listed above can be found in the following page: Microsoft Product Support Lifecycle.

• 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.