View products that this article applies to.

Introduction

This update is for the Microsoft .NET Framework to disable RC4 in Transport Layer Security (TLS) through the modification of the system registry. Use of RC4 in TLS could allow an attacker to perform man-in-the-middle attacks and recover plaintext from encrypted sessions.

Summary

Microsoft has released a security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To view the security advisory, go to the following Microsoft website:

https://technet.microsoft.com/security/advisory/2960358

More information about this security update

Download information

This update is available for download from the Microsoft Download Center.

Command-line switches for this update

Learn about the various command-line switches that are supported by this Microsoft .NET Framework update.

Restart information

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

Update replacement information

This update does not replace any previously released update.

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.

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 systemsGDR service branch

File name

File version

File size

Date

Time

system.resources.dll

2.0.50727.7905

241,664

28-Aug-2013

16:50

system.resources.dll

2.0.50727.7905

204,800

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

212,992

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

294,912

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

28-Aug-2013

17:07

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

212,992

28-Aug-2013

17:34

system.resources.dll

2.0.50727.7905

221,184

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

217,088

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

204,800

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

233,472

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

217,088

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

196,608

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

266,240

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

184,320

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

184,320

23-Aug-2013

18:26

system.dll

2.0.50727.8004

3,203,072

08-Mar-2014

01:12

LDR service branch

File name

File version

File size

Date

Time

system.resources.dll

2.0.50727.7905

241,664

15-Nov-2013

17:21

system.resources.dll

2.0.50727.7905

204,800

15-Nov-2013

17:27

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

17:25

system.resources.dll

2.0.50727.7905

212,992

15-Nov-2013

17:32

system.resources.dll

2.0.50727.7905

294,912

15-Nov-2013

17:24

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

17:36

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

17:25

system.resources.dll

2.0.50727.7905

212,992

15-Nov-2013

17:28

system.resources.dll

2.0.50727.7905

221,184

15-Nov-2013

17:21

system.resources.dll

2.0.50727.7905

217,088

15-Nov-2013

19:41

system.resources.dll

2.0.50727.7905

204,800

15-Nov-2013

18:07

system.resources.dll

2.0.50727.7905

233,472

15-Nov-2013

17:59

system.resources.dll

2.0.50727.7905

217,088

15-Nov-2013

19:42

system.resources.dll

2.0.50727.7905

196,608

15-Nov-2013

17:47

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

17:57

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

17:27

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

17:31

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

17:32

system.resources.dll

2.0.50727.7905

266,240

15-Nov-2013

17:36

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

17:30

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

17:29

system.resources.dll

2.0.50727.7905

184,320

15-Nov-2013

17:31

system.resources.dll

2.0.50727.7905

184,320

15-Nov-2013

17:30

system.dll

2.0.50727.8607

3,198,976

06-Mar-2014

23:07

For all supported x64-based versions of systemsGDR service branch

File name

File version

File size

Date

Time

system.dll

2.0.50727.8004

3,203,072

08-Mar-2014

01:12

system.resources.dll

2.0.50727.7905

241,664

28-Aug-2013

16:57

system.resources.dll

2.0.50727.7905

204,800

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

212,992

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

294,912

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

28-Aug-2013

17:08

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

212,992

28-Aug-2013

17:33

system.resources.dll

2.0.50727.7905

221,184

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

217,088

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

204,800

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

233,472

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

217,088

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

196,608

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

208,896

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

266,240

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

200,704

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

184,320

23-Aug-2013

18:26

system.resources.dll

2.0.50727.7905

184,320

23-Aug-2013

18:26

system.dll

2.0.50727.8004

3,203,072

08-Mar-2014

01:12

LDR service branch

File name

File version

File size

Date

Time

system.dll

2.0.50727.8607

3,198,976

06-Mar-2014

23:07

system.resources.dll

2.0.50727.7905

241,664

15-Nov-2013

17:35

system.resources.dll

2.0.50727.7905

204,800

15-Nov-2013

18:35

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

17:47

system.resources.dll

2.0.50727.7905

212,992

15-Nov-2013

18:57

system.resources.dll

2.0.50727.7905

294,912

15-Nov-2013

17:47

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

18:41

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

17:42

system.resources.dll

2.0.50727.7905

212,992

15-Nov-2013

18:35

system.resources.dll

2.0.50727.7905

221,184

15-Nov-2013

18:32

system.resources.dll

2.0.50727.7905

217,088

15-Nov-2013

17:46

system.resources.dll

2.0.50727.7905

204,800

15-Nov-2013

17:52

system.resources.dll

2.0.50727.7905

233,472

15-Nov-2013

17:59

system.resources.dll

2.0.50727.7905

217,088

15-Nov-2013

17:53

system.resources.dll

2.0.50727.7905

196,608

15-Nov-2013

17:47

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

17:43

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

18:34

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

18:42

system.resources.dll

2.0.50727.7905

208,896

15-Nov-2013

18:35

system.resources.dll

2.0.50727.7905

266,240

15-Nov-2013

18:40

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

18:53

system.resources.dll

2.0.50727.7905

200,704

15-Nov-2013

18:48

system.resources.dll

2.0.50727.7905

184,320

15-Nov-2013

18:58

system.resources.dll

2.0.50727.7905

184,320

15-Nov-2013

18:57

system.dll

2.0.50727.8607

3,198,976

06-Mar-2014

23:07



Applies toThis article applies to the following:

  • Microsoft .NET Framework 3.5 when used with:

    • Windows 8.1

    • Windows Server 2012 R2

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