Microsoft Download Center Archive

Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1

  • Published:
  • Version: 3.5.1
  • Category: Security Patch
  • Language: English

A security issue has been identified that could allow an unauthenticated remote attacker to cause the affected system to stop responding.

  • A security issue has been identified that could allow an unauthenticated remote attacker to cause the affected system to stop responding. 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
Windows6.1-KB2863240-ia64.msu
SHA1: 53a2f1dbb87728dbd7c60f6e0fa3aa9efd26629a
321 KB
Windows6.1-KB2863240-x64.msu
SHA1: c2d609200828db6c5caf5d476503bbc764aad675
468 KB
Windows6.1-KB2863240-x86.msu
SHA1: 52e615b159dd28425f3ba87a266585cc62ff1e2b
461 KB

System Requirements

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

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.