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Summary

This security update resolves a vulnerability in the Microsoft .NET Framework. The vulnerability could cause information disclosure if an attacker injects unencrypted data in the target secure channel and then performs a man-in-the-middle (MiTM) attack between the targeted client and a legitimate server. To learn more about these vulnerabilities, seeĀ Microsoft Security Bulletin MS16-065 and the following article in the Microsoft Knowledge Base:

3155464 MS16-065: Description of the TLS/SSL protocol information disclosure vulnerability (CVE-2016-0149): May 10, 2016

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.

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 Download security update 3142026

Update deployment information

For deployment information about this update, see Microsoft Knowledge Base article 3156757.

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 hash

File name

SHA1 hash

SHA256 hash

Windows8.1-KB3142026-x64.msu

093CC51CF8070C22A58F82A4DE2A7B4C6E3161F0

28B7BA31B92872EC4E91B9D364FDA7B4E87C2D7745680B41E044C7AF41650D54

Windows8.1-KB3142026-x64.msu

15EFE8028C10F7AED0FA6DDF591316F524A9DF4A

368081D6AD36BC46D96488E849CBB01AB945F261C16F0D8CEB7D91DB2469384E

Windows8.1-KB3142026-x86.msu

B29C50DCD64628D9FF69A28FD9508DA9B59403A5

8AF7A0DF244202CE942310915FDB5249536C3777CBDEAF49ACC6F9D621BD4A63

Windows8.1-KB3142026-x86.msu

BB8A6BA0458FA6C4BD5FE4AEC5A8190BDCC553BF

25E5AC3D1D5CF9611C10EF28A55699BF7EC9609D442058457B2DBF0C8DE4DA30

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 name

File version

File size

Date

Time

system.resources.dll

2.0.50727.7905

241,664

21-Oct-2015

13:22

system.resources.dll

2.0.50727.7905

204,800

18-Sep-2015

13:30

system.resources.dll

2.0.50727.7905

200,704

18-Sep-2015

13:29

system.resources.dll

2.0.50727.7905

212,992

18-Sep-2015

13:31

system.resources.dll

2.0.50727.7905

294,912

09-Oct-2015

13:34

system.resources.dll

2.0.50727.7905

208,896

18-Sep-2015

13:20

system.resources.dll

2.0.50727.7905

200,704

09-Oct-2015

13:32

system.resources.dll

2.0.50727.7905

212,992

21-Oct-2015

13:27

system.resources.dll

2.0.50727.7905

221,184

09-Oct-2015

13:30

system.resources.dll

2.0.50727.7905

217,088

09-Oct-2015

13:31

system.resources.dll

2.0.50727.7905

204,800

03-Oct-2015

05:58

system.resources.dll

2.0.50727.7905

233,472

03-Oct-2015

05:55

system.resources.dll

2.0.50727.7905

217,088

03-Oct-2015

05:58

system.resources.dll

2.0.50727.7905

196,608

17-Dec-2015

14:11

system.resources.dll

2.0.50727.7905

208,896

17-Dec-2015

14:11

system.resources.dll

2.0.50727.7905

208,896

17-Dec-2015

14:11

system.resources.dll

2.0.50727.7905

208,896

08-Sep-2015

17:25

system.resources.dll

2.0.50727.7905

208,896

08-Sep-2015

17:25

system.resources.dll

2.0.50727.7905

266,240

26-Sep-2015

14:14

system.resources.dll

2.0.50727.7905

200,704

26-Sep-2015

14:12

system.resources.dll

2.0.50727.7905

200,704

16-Sep-2015

00:57

system.resources.dll

2.0.50727.7905

184,320

16-Sep-2015

00:52

system.resources.dll

2.0.50727.7905

184,320

21-Oct-2015

13:27

system.dll

2.0.50727.8686

3,203,072

03-Mar-2016

14:13

For all supported x64-based versions of systems

File name

File version

File size

Date

Time

system.dll

2.0.50727.8686

3,203,072

03-Mar-2016

14:11

system.resources.dll

2.0.50727.7905

241,664

04-Mar-2016

14:12

system.resources.dll

2.0.50727.7905

204,800

04-Mar-2016

14:13

system.resources.dll

2.0.50727.7905

200,704

04-Mar-2016

14:12

system.resources.dll

2.0.50727.7905

212,992

04-Mar-2016

14:12

system.resources.dll

2.0.50727.7905

294,912

04-Nov-2015

06:38

system.resources.dll

2.0.50727.7905

208,896

04-Nov-2015

06:42

system.resources.dll

2.0.50727.7905

200,704

04-Mar-2016

14:14

system.resources.dll

2.0.50727.7905

212,992

04-Mar-2016

14:17

system.resources.dll

2.0.50727.7905

221,184

04-Mar-2016

14:12

system.resources.dll

2.0.50727.7905

217,088

04-Mar-2016

14:15

system.resources.dll

2.0.50727.7905

204,800

23-Oct-2015

21:37

system.resources.dll

2.0.50727.7905

233,472

23-Oct-2015

21:38

system.resources.dll

2.0.50727.7905

217,088

23-Oct-2015

21:38

system.resources.dll

2.0.50727.7905

196,608

04-Mar-2016

14:14

system.resources.dll

2.0.50727.7905

208,896

04-Mar-2016

14:15

system.resources.dll

2.0.50727.7905

208,896

04-Mar-2016

14:15

system.resources.dll

2.0.50727.7905

208,896

08-Nov-2015

15:04

system.resources.dll

2.0.50727.7905

208,896

08-Nov-2015

15:04

system.resources.dll

2.0.50727.7905

266,240

04-Mar-2016

14:15

system.resources.dll

2.0.50727.7905

200,704

04-Mar-2016

14:16

system.resources.dll

2.0.50727.7905

200,704

04-Mar-2016

14:14

system.resources.dll

2.0.50727.7905

184,320

04-Mar-2016

14:12

system.resources.dll

2.0.50727.7905

184,320

04-Mar-2016

14:16

system.dll

2.0.50727.8686

3,203,072

03-Mar-2016

14:13


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 3.5 when used with:

    • Windows Server 2012 R2

    • Windows 8.1

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