Microsoft Download Center Archive

Security Update for Microsoft .NET Framework 4.5 on Windows 7 Service Pack 1, and Windows Server 2008 R2 Service Pack 1, Windows Vista Service Pack 2, and Windows Server 2008 Service Pack 2

  • Published:
  • Version: 4.5
  • Category: Security Patch
  • Language: English

A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it.

  • A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it. You can help protect your system by installing this update from Microsoft. After you install this update, you may have to restart your system.
Knowledge Base Articles:
Security Bulletins:

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.

FileSize
NDP45-KB2840642-v2-x64.exe
SHA1: 463747772c905e1c6bb95de7214b1dcd5745a2b0
12.55 MB
NDP45-KB2840642-v2-x86.exe
SHA1: f58732b0488e05e22724ea658ffb96687ec7ddb9
10.55 MB

System Requirements

Operating Systems: Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista

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.