MS16-091: Description of the security update for the .NET Framework 4.6 and 4.6.1 in Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2: July 12, 2016

November 8, 2016 A detection change was made to account for the .NET Framework 4.6.1 hotfix rollup for customers who were not being correctly offered this security update for the .NET Framework 4.6.1.
View products that this article applies to.

Summary

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.

More Information

Important All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.

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.

Note For Windows RT 8.1, this update is available through Windows Update only.

Method 2: Microsoft Download Center

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

Download security update 3164024

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.

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File information

File hashFile name	Package hash SHA1	Package hash SHA2
Windows8.1-KB3164024-arm.msu	78EC6EF8AB1C759F097345C29C0B3D372DF4E342	0F8BA6376E50697FA63E6DAB4BE4AF6D98BD0E38CFC41A1D5F1E3E7AF3AB641A
Windows8.1-KB3164024-x86.msu	94BBAB1B1CA90FA267B65FB172EBE4E4951A0F7C	08F92E415F2DDB6CC8C94649E5ACB1CEC35F2BED959BB537DE99FE9EE124C35E
Windows8.1-KB3164024-x64.msu	7FDFB76340B09D46BC3C2E230CD66D06FA327253	C1AAF0B88D4BBA1B02CECCF2350C09168C96BFE97EA674811E1AD3C6E6C836E7
File attributesThe 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 ARM-based versionsFile name	File version	File size	Date	Time	Platform
Msvcp120_clr0400.dll	12.0.52242.36242	602,080	20-Jun-2016	19:23	Not applicable
Msvcr120_clr0400.dll	12.0.52242.36242	634,336	20-Jun-2016	19:23	Not applicable
System.data.dll	4.6.1082.0	3,362,304	20-May-2016	07:30	Not applicable
For all supported x86-based versionsFile name	File version	File size	Date	Time	Platform
—	—	—	—	—	—
Msvcp120_clr0400.dll	12.0.52512.0	484,552	20-Jun-2016	19:23	x86
Msvcr120_clr0400.dll	12.0.52512.0	987,848	20-Jun-2016	19:23	x86
System.data.dll	4.6.1082.0	3,359,920	20-May-2016	07:39	x86
For all supported x64-based versionsFile name	File version	File size	Date	Time	Platform
—	—	—	—	—	—
Msvcp120_clr0400.dll	12.0.52512.0	690,016	20-Jun-2016	19:23	x64
Msvcr120_clr0400.dll	12.0.52512.0	993,632	20-Jun-2016	19:23	x64
System.data.dll	4.6.1082.0	3,422,384	20-May-2016	07:32	x64
Msvcp120_clr0400.dll	12.0.52512.0	484,552	20-Jun-2016	19:23	x86
Msvcr120_clr0400.dll	12.0.52512.0	987,848	20-Jun-2016	19:23	x86
System.data.dll	4.6.1082.0	3,359,920	20-May-2016	07:39	x86

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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

Applies toThis article applies to the following:

• Microsoft .NET Framework 4.6 and 4.6.1 when used with:

  • Windows Server 2012 R2
  • Windows 8.1
  • Windows Server 2012