MS16-019: Description of the security update for the .NET Framework 3.5.1 in Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1: February 9, 2016

Applies to: .NET Framework 3.5.1


This update resolves a vulnerability in the Microsoft .NET Framework. The vulnerability could allow denial of service if an attacker inserts specially crafted XSLT into a client-side XML web part that causes recursive calls on the server. To learn more about this vulnerability, see Microsoft Security Bulletin MS16-019.

How to obtain and install this update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Stay up-to-date for more secure web browsing.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. To install this update, follow the installation instructions on the download page.

Download Download security update 3122648

Update deployment information

For deployment information about this update, see Microsoft Knowledge Base article 3137893 .

Update removal information

Note We do not recommend that you remove any security update.

To remove this update, use the Programs and Features item in Control Panel.

Update restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.

Update replacement information

This update does not replace any previously released update.

Applies to

This article applies to the following:
  • Microsoft .NET Framework 3.5.1 when used with:
    • Windows Server 2008 R2 Service Pack 1
    • Windows 7 Service Pack 1