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

A security issue has been identified that could allow an attacker to tamper with digitally signed content without being detected, when this content is being consumed by an application that makes uses of the Microsoft .NET Framework on a Windows-based system.

• A security issue has been identified that could allow an attacker to tamper with digitally signed content without being detected, when this content is being consumed by an application that makes uses of the Microsoft .NET Framework on a Windows-based system. You can help protect your computer by installing this update from Microsoft. After you install this item, 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	Size
NDP20SP2-KB979909-IA64.exe SHA1: 251a5ce39b5eac7c28d93df0225f3ec2145b4fdb	922 KB
NDP20SP2-KB979909-x64.exe SHA1: 5b2afd67f2733a0f4c3221c738af1f1054153188	922 KB
NDP20SP2-KB979909-x86.exe SHA1: dc7f4b15ff426d9e413b87909c35929660d8a33c	809 KB

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  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.