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 the 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

4.0.30319.33440

289,392

28-Aug-2013

16:50

system.resources.dll

4.0.30319.33440

249,968

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

244,848

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

257,136

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

350,320

14-Aug-2013

22:42

system.resources.dll

4.0.30319.33440

253,552

28-Aug-2013

17:08

system.resources.dll

4.0.30319.33440

244,848

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

259,184

28-Aug-2013

17:34

system.resources.dll

4.0.30319.33440

270,456

14-Aug-2013

22:42

system.resources.dll

4.0.30319.33440

262,256

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

251,504

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

283,760

14-Aug-2013

22:42

system.resources.dll

4.0.30319.33440

261,744

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

238,192

14-Aug-2013

22:42

system.resources.dll

4.0.30319.33440

251,504

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

254,576

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

252,016

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

252,528

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

320,624

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

243,320

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

244,336

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

223,856

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

226,416

14-Aug-2013

22:46

system.dll

4.0.30319.34111

3,479,680

09-Mar-2014

22:12

LDR service branch

File name

File version

File size

Date

Time

system.resources.dll

4.0.30319.33440

289,392

15-Nov-2013

17:22

system.resources.dll

4.0.30319.33440

249,968

15-Nov-2013

17:27

system.resources.dll

4.0.30319.33440

244,848

15-Nov-2013

17:26

system.resources.dll

4.0.30319.33440

257,136

15-Nov-2013

17:32

system.resources.dll

4.0.30319.33440

350,320

15-Nov-2013

17:24

system.resources.dll

4.0.30319.33440

253,552

15-Nov-2013

17:37

system.resources.dll

4.0.30319.33440

244,848

15-Nov-2013

17:25

system.resources.dll

4.0.30319.33440

259,184

15-Nov-2013

17:29

system.resources.dll

4.0.30319.33440

270,456

15-Nov-2013

17:21

system.resources.dll

4.0.30319.33440

262,256

15-Nov-2013

19:42

system.resources.dll

4.0.30319.33440

251,504

15-Nov-2013

18:08

system.resources.dll

4.0.30319.33440

283,760

15-Nov-2013

17:59

system.resources.dll

4.0.30319.33440

261,744

15-Nov-2013

19:42

system.resources.dll

4.0.30319.33440

238,192

15-Nov-2013

17:49

system.resources.dll

4.0.30319.33440

251,504

15-Nov-2013

17:58

system.resources.dll

4.0.30319.33440

254,576

15-Nov-2013

17:27

system.resources.dll

4.0.30319.33440

252,016

15-Nov-2013

17:31

system.resources.dll

4.0.30319.33440

252,528

15-Nov-2013

17:33

system.resources.dll

4.0.30319.33440

320,624

15-Nov-2013

17:37

system.resources.dll

4.0.30319.33440

243,320

15-Nov-2013

17:31

system.resources.dll

4.0.30319.33440

244,336

15-Nov-2013

17:29

system.resources.dll

4.0.30319.33440

223,856

15-Nov-2013

17:32

system.resources.dll

4.0.30319.33440

226,416

15-Nov-2013

17:31

system.dll

4.0.30319.36118

3,479,688

21-Mar-2014

22:07

For all supported x64-based versions of systemsGDR service branch

File name

File version

File size

Date

Time

system.resources.dll

4.0.30319.33440

289,392

28-Aug-2013

16:57

system.resources.dll

4.0.30319.33440

249,968

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

244,848

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

257,136

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

350,320

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

253,552

28-Aug-2013

17:08

system.resources.dll

4.0.30319.33440

244,848

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

259,184

28-Aug-2013

17:34

system.resources.dll

4.0.30319.33440

270,448

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

262,256

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

251,504

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

283,760

14-Aug-2013

22:48

system.resources.dll

4.0.30319.33440

261,744

14-Aug-2013

22:48

system.resources.dll

4.0.30319.33440

238,192

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

251,504

14-Aug-2013

22:48

system.resources.dll

4.0.30319.33440

254,576

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

252,016

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

252,528

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

320,624

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

243,312

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

244,336

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

223,856

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

226,416

14-Aug-2013

22:45

system.dll

4.0.30319.34111

3,479,680

09-Mar-2014

22:12

system.resources.dll

4.0.30319.33440

289,392

28-Aug-2013

16:57

system.resources.dll

4.0.30319.33440

249,968

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

244,848

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

257,136

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

350,320

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

253,552

28-Aug-2013

17:08

system.resources.dll

4.0.30319.33440

244,848

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

259,184

28-Aug-2013

17:34

system.resources.dll

4.0.30319.33440

270,448

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

262,256

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

251,504

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

283,760

14-Aug-2013

22:48

system.resources.dll

4.0.30319.33440

261,744

14-Aug-2013

22:48

system.resources.dll

4.0.30319.33440

238,192

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

251,504

14-Aug-2013

22:48

system.resources.dll

4.0.30319.33440

254,576

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

252,016

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

252,528

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

320,624

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

243,312

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

244,336

14-Aug-2013

22:43

system.resources.dll

4.0.30319.33440

223,856

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

226,416

14-Aug-2013

22:45

system.dll

4.0.30319.34111

3,479,680

09-Mar-2014

22:12

LDR service branch

File name

File version

File size

Date

Time

system.resources.dll

4.0.30319.33440

289,392

15-Nov-2013

17:36

system.resources.dll

4.0.30319.33440

249,968

15-Nov-2013

18:35

system.resources.dll

4.0.30319.33440

244,848

15-Nov-2013

17:47

system.resources.dll

4.0.30319.33440

257,136

15-Nov-2013

18:58

system.resources.dll

4.0.30319.33440

350,320

15-Nov-2013

17:48

system.resources.dll

4.0.30319.33440

253,552

15-Nov-2013

18:42

system.resources.dll

4.0.30319.33440

244,848

15-Nov-2013

17:42

system.resources.dll

4.0.30319.33440

259,184

15-Nov-2013

18:35

system.resources.dll

4.0.30319.33440

270,448

15-Nov-2013

18:32

system.resources.dll

4.0.30319.33440

262,256

15-Nov-2013

17:47

system.resources.dll

4.0.30319.33440

251,504

15-Nov-2013

17:52

system.resources.dll

4.0.30319.33440

283,760

15-Nov-2013

18:00

system.resources.dll

4.0.30319.33440

261,744

15-Nov-2013

17:53

system.resources.dll

4.0.30319.33440

238,192

15-Nov-2013

17:47

system.resources.dll

4.0.30319.33440

251,504

15-Nov-2013

17:44

system.resources.dll

4.0.30319.33440

254,576

15-Nov-2013

18:34

system.resources.dll

4.0.30319.33440

252,016

15-Nov-2013

18:42

system.resources.dll

4.0.30319.33440

252,528

15-Nov-2013

18:36

system.resources.dll

4.0.30319.33440

320,624

15-Nov-2013

18:40

system.resources.dll

4.0.30319.33440

243,312

15-Nov-2013

18:54

system.resources.dll

4.0.30319.33440

244,336

15-Nov-2013

18:49

system.resources.dll

4.0.30319.33440

223,856

15-Nov-2013

18:58

system.resources.dll

4.0.30319.33440

226,416

15-Nov-2013

18:57

system.dll

4.0.30319.36118

3,479,688

21-Mar-2014

22:07

system.resources.dll

4.0.30319.33440

289,392

15-Nov-2013

17:36

system.resources.dll

4.0.30319.33440

249,968

15-Nov-2013

18:35

system.resources.dll

4.0.30319.33440

244,848

15-Nov-2013

17:47

system.resources.dll

4.0.30319.33440

257,136

15-Nov-2013

18:58

system.resources.dll

4.0.30319.33440

350,320

15-Nov-2013

17:48

system.resources.dll

4.0.30319.33440

253,552

15-Nov-2013

18:42

system.resources.dll

4.0.30319.33440

244,848

15-Nov-2013

17:42

system.resources.dll

4.0.30319.33440

259,184

15-Nov-2013

18:35

system.resources.dll

4.0.30319.33440

270,448

15-Nov-2013

18:32

system.resources.dll

4.0.30319.33440

262,256

15-Nov-2013

17:47

system.resources.dll

4.0.30319.33440

251,504

15-Nov-2013

17:52

system.resources.dll

4.0.30319.33440

283,760

15-Nov-2013

18:00

system.resources.dll

4.0.30319.33440

261,744

15-Nov-2013

17:53

system.resources.dll

4.0.30319.33440

238,192

15-Nov-2013

17:47

system.resources.dll

4.0.30319.33440

251,504

15-Nov-2013

17:44

system.resources.dll

4.0.30319.33440

254,576

15-Nov-2013

18:34

system.resources.dll

4.0.30319.33440

252,016

15-Nov-2013

18:42

system.resources.dll

4.0.30319.33440

252,528

15-Nov-2013

18:36

system.resources.dll

4.0.30319.33440

320,624

15-Nov-2013

18:40

system.resources.dll

4.0.30319.33440

243,312

15-Nov-2013

18:54

system.resources.dll

4.0.30319.33440

244,336

15-Nov-2013

18:49

system.resources.dll

4.0.30319.33440

223,856

15-Nov-2013

18:58

system.resources.dll

4.0.30319.33440

226,416

15-Nov-2013

18:57

system.dll

4.0.30319.36118

3,479,688

21-Mar-2014

22:07

For all supported ARM-based versions of systems

File name

File version

File size

Date

Time

system.resources.dll

4.0.30319.33440

291,256

28-Aug-2013

16:58

system.resources.dll

4.0.30319.33440

251,840

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

246,712

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

259,000

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

352,192

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

255,424

28-Aug-2013

17:07

system.resources.dll

4.0.30319.33440

246,712

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

261,048

28-Aug-2013

17:35

system.resources.dll

4.0.30319.33440

272,320

14-Aug-2013

22:44

system.resources.dll

4.0.30319.33440

264,120

14-Aug-2013

22:49

system.resources.dll

4.0.30319.33440

253,376

14-Aug-2013

22:50

system.resources.dll

4.0.30319.33440

285,624

14-Aug-2013

22:50

system.resources.dll

4.0.30319.33440

263,616

14-Aug-2013

22:50

system.resources.dll

4.0.30319.33440

240,064

14-Aug-2013

22:47

system.resources.dll

4.0.30319.33440

253,368

14-Aug-2013

22:50

system.resources.dll

4.0.30319.33440

256,440

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

253,888

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

254,392

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

322,496

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

245,184

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

246,200

14-Aug-2013

22:45

system.resources.dll

4.0.30319.33440

225,720

14-Aug-2013

22:46

system.resources.dll

4.0.30319.33440

228,288

14-Aug-2013

22:45

system.dll

4.0.30319.34111

3,479,680

09-Mar-2014

22:12



Applies toThis article applies to the following:

  • Microsoft .NET Framework 4.5.1 when used with:

    • Windows 8.1

    • Windows RT 8.1

    • Windows Server 2012 R2

  • Microsoft .NET Framework 4.5.2 when used with:

    • Windows 8.1

    • Windows RT 8.1

    • Windows Server 2012 R2

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