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MS16-091: 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: July 12, 2016

View products that this article applies to.


This update resolves a vulnerability in the Microsoft .NET Framework. The vulnerability could cause information disclosure if an attacker uploads a specially crafted XML file to a web-based application. To learn more about this vulnerability, see Microsoft Security Bulletin MS16-091.

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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 get security updates automatically, see the "Turn on automatic updating in the Control Panel" section of this Safety & Security Center article.

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 3163245

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Update deployment information

For deployment information about this update, see Microsoft Knowledge Base article 3170048 .

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.

File information

File hash

Package namePackage hash SHA1Package hash SHA2

File attributes

The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

For all supported x86-based versions of systems

File nameFile versionFile sizeDateTime,83223-Mar-201622:44,16023-Mar-201622:44,06423-Mar-201622:43,35223-Mar-201622:45,88823-Mar-201622:43,16023-Mar-201622:45,06423-Mar-201622:43,35223-Mar-201622:45,64023-Mar-201622:43,35223-Mar-201622:45,16023-Mar-201622:45,73623-Mar-201622:46,35223-Mar-201622:45,96823-Mar-201622:43,25623-Mar-201622:45,35223-Mar-201622:44,16023-Mar-201622:45,25623-Mar-201622:45,60023-Mar-201622:45,06423-Mar-201622:45,06423-Mar-201622:45,68023-Mar-201622:45,77623-Mar-201622:45,975,74424-May-201613:05

For all supported x64-based versions of systems

File nameFile versionFile sizeDateTime,150,33624-May-201613:06,83223-Mar-201622:45,16023-Mar-201622:45,06423-Mar-201622:44,35223-Mar-201622:46,88823-Mar-201622:44,16023-Mar-201622:46,06423-Mar-201622:44,35223-Mar-201622:46,64023-Mar-201622:44,35223-Mar-201622:45,16023-Mar-201622:46,73623-Mar-201622:46,35223-Mar-201622:46,96823-Mar-201622:44,25623-Mar-201622:45,35223-Mar-201622:45,16023-Mar-201622:46,25623-Mar-201622:45,60023-Mar-201622:46,06423-Mar-201622:45,06423-Mar-201622:45,68023-Mar-201622:46,77623-Mar-201622:46,975,74424-May-201613:05

For all supported IA64-based versions of systems

File nameFile versionFile sizeDateTime,310,59224-May-201613:05,35223-Mar-201622:43,35223-Mar-201622:43,73623-Mar-201622:43,35223-Mar-201622:43,68023-Mar-201622:44,77623-Mar-201622:44,975,74424-May-201613:05

How to obtain help and support for this security update
Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

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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

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Keywords: kbsecvulnerability, kbsecurity, kbsecreview, kbsecbulletin, kblangall, kbfix, kbexpertiseinter, kbbug, atdownload, kb, kbmustloc

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Article Info
Article ID : 3163245
Revision : 3
Created on : 4/13/2020
Published on : 4/16/2020
Exists online : False
Views : 370