View products that this article applies to.

Introduction

This August 2017 Update for Windows Server 2012 includes cumulative reliability improvements in the .NET Framework 3.5. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the "Prerequisites" and "Restart requirement" sections.

Important

  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Quality and reliability improvements

CLR

  • Very rarely, an instance of ReaderWriterLock may crash when releasing a lock. A new configuration variable is introduced to enable opting in to the fix. Set the environment variable COMPlus_ReaderWriterLock_UseFixedIdGeneration to 1 when you start the application to fix the issue.

WMI

  • Code was changed to make the setting of the permissions event-driven so that it could support changes in the option values.

Additional information about this update

For more information about this update as it relates to Windows Server 2012, see the following article in the Microsoft Knowledge Base:

4035037 August 2017 Preview of the Quality Rollups for the .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, and 4.7 for Windows Server 2012: August 15, 2017

How to get this update

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 Windows Update: FAQ.

Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  3. Click Import Updates.

  4. WSUS will open a browser window in which you may be prompted to install an ActiveX control. Install the ActiveX control to continue.

  5. Once the ActiveX control is installed, you will see the Microsoft Update Catalog screen. Type 4035037 in the Search box, and then click Search.

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Click Add to add them to your basket.

  7. When you have selected all the packages you need, click View Basket.

  8. Click Import to import the packages to your WSUS server.

  9. Click Close once the packages have been imported to return to WSUS.

The updates are now available for installation through WSUS.

Prerequisites

To apply this update, you must have the .NET Framework 3.5 installed.

Restart requirement

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

Update replacement information

This update replaces previously released update 4014594 that is dated May 16, 2017.

File information

The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and 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

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

system.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:09

system.security.dll

2.0.50727.8759

270,336

28-Mar-2017

13:09

system.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

system.dll

2.0.50727.8759

3,203,072

28-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

big5.nlp

66,728

28-Dec-2016

04:28

bopomofo.nlp

82,172

28-Dec-2016

04:28

ksc.nlp

116,756

28-Dec-2016

04:28

mscorlib.dll

2.0.50727.8762

4,554,752

07-Apr-2017

13:09

normidna.nlp

59,342

28-Dec-2016

04:28

normnfc.nlp

45,794

28-Dec-2016

04:28

normnfd.nlp

39,284

28-Dec-2016

04:28

normnfkc.nlp

66,384

28-Dec-2016

04:28

normnfkd.nlp

60,294

28-Dec-2016

04:28

prc.nlp

83,748

28-Dec-2016

04:28

prcp.nlp

83,748

28-Dec-2016

04:28

sortkey.nlp

262,148

28-Dec-2016

04:28

sorttbls.nlp

20,320

28-Dec-2016

04:28

xjis.nlp

28,288

28-Dec-2016

04:28

aspnet_wp.exe

2.0.50727.8762

31,384

07-Apr-2017

13:09

mscordacwks.dll

2.0.50727.8762

990,368

07-Apr-2017

13:09

mscorwks.dll

2.0.50727.8762

5,946,520

07-Apr-2017

13:09

sos.dll

2.0.50727.8762

389,776

07-Apr-2017

13:09

webengine.dll

2.0.50727.8762

437,400

07-Apr-2017

13:09

wminet_utils.dll

2.0.50727.8766

116,896

12-Jul-2017

13:09

presentationcore.dll

3.0.6920.8773

4,222,976

29-Mar-2017

13:09

presentationfontcache.exe.config

161

06-Jul-2012

20:04

wpfgfx_v0300.dll

3.0.6920.8773

1,737,888

29-Mar-2017

13:09

system.data.dll

2.0.50727.8762

2,975,744

06-Apr-2017

20:26

system.printing.dll

3.0.6920.8773

372,736

29-Mar-2017

13:09

system.web.dll

2.0.50727.8762

5,287,936

07-Apr-2017

13:09

penimc.dll

3.0.6920.8773

68,752

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

presentationhostdll.dll

3.0.6920.8773

131,248

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

For all supported x64-based versions of systems

File name

File version

File size

Date

Time

big5.nlp

66,728

04-Jun-2015

22:48

bopomofo.nlp

82,172

04-Jun-2015

22:48

ksc.nlp

116,756

04-Jun-2015

22:48

mscorlib.dll

2.0.50727.8762

4,571,136

07-Apr-2017

13:09

normidna.nlp

59,342

04-Jun-2015

22:48

normnfc.nlp

45,794

04-Jun-2015

22:48

normnfd.nlp

39,284

04-Jun-2015

22:48

normnfkc.nlp

66,384

04-Jun-2015

22:48

normnfkd.nlp

60,294

04-Jun-2015

22:48

prc.nlp

83,748

04-Jun-2015

22:48

prcp.nlp

83,748

04-Jun-2015

22:48

sortkey.nlp

262,148

04-Jun-2015

22:49

sorttbls.nlp

20,320

04-Jun-2015

22:49

xjis.nlp

28,288

04-Jun-2015

22:49

aspnet_wp.exe

2.0.50727.8762

43,160

07-Apr-2017

13:09

mscordacwks.dll

2.0.50727.8762

1,757,344

07-Apr-2017

13:09

mscorwks.dll

2.0.50727.8762

10,007,704

07-Apr-2017

13:09

sos.dll

2.0.50727.8762

486,032

07-Apr-2017

13:09

system.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:09

system.security.dll

2.0.50727.8759

270,336

28-Mar-2017

13:10

system.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

system.dll

2.0.50727.8759

3,203,072

28-Mar-2017

13:10

webengine.dll

2.0.50727.8762

746,648

07-Apr-2017

13:09

wminet_utils.dll

2.0.50727.8766

140,960

12-Jul-2017

13:09

presentationcore.dll

3.0.6920.8773

4,006,400

29-Mar-2017

13:09

presentationfontcache.exe.config

161

06-Jul-2012

20:06

wpfgfx_v0300.dll

3.0.6920.8773

2,256,032

29-Mar-2017

13:09

system.data.dll

2.0.50727.8762

3,150,336

06-Apr-2017

20:26

system.printing.dll

3.0.6920.8773

358,400

29-Mar-2017

13:09

system.web.dll

2.0.50727.8762

5,296,128

07-Apr-2017

13:09

penimc.dll

3.0.6920.8773

85,648

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

4,640,768

29-Mar-2017

13:09

presentationhostdll.dll

3.0.6920.8773

172,208

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,118,208

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

system.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:09

system.security.dll

2.0.50727.8759

270,336

28-Mar-2017

13:09

system.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

system.dll

2.0.50727.8759

3,203,072

28-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

big5.nlp

66,728

28-Dec-2016

04:28

bopomofo.nlp

82,172

28-Dec-2016

04:28

ksc.nlp

116,756

28-Dec-2016

04:28

mscorlib.dll

2.0.50727.8762

4,554,752

07-Apr-2017

13:09

normidna.nlp

59,342

28-Dec-2016

04:28

normnfc.nlp

45,794

28-Dec-2016

04:28

normnfd.nlp

39,284

28-Dec-2016

04:28

normnfkc.nlp

66,384

28-Dec-2016

04:28

normnfkd.nlp

60,294

28-Dec-2016

04:28

prc.nlp

83,748

28-Dec-2016

04:28

prcp.nlp

83,748

28-Dec-2016

04:28

sortkey.nlp

262,148

28-Dec-2016

04:28

sorttbls.nlp

20,320

28-Dec-2016

04:28

xjis.nlp

28,288

28-Dec-2016

04:28

aspnet_wp.exe

2.0.50727.8762

31,384

07-Apr-2017

13:09

mscordacwks.dll

2.0.50727.8762

990,368

07-Apr-2017

13:09

mscorwks.dll

2.0.50727.8762

5,946,520

07-Apr-2017

13:09

sos.dll

2.0.50727.8762

389,776

07-Apr-2017

13:09

webengine.dll

2.0.50727.8762

437,400

07-Apr-2017

13:09

wminet_utils.dll

2.0.50727.8766

116,896

12-Jul-2017

13:09

presentationcore.dll

3.0.6920.8773

4,222,976

29-Mar-2017

13:09

presentationfontcache.exe.config

161

06-Jul-2012

20:04

wpfgfx_v0300.dll

3.0.6920.8773

1,737,888

29-Mar-2017

13:09

system.data.dll

2.0.50727.8762

2,975,744

06-Apr-2017

20:26

system.printing.dll

3.0.6920.8773

372,736

29-Mar-2017

13:09

system.web.dll

2.0.50727.8762

5,287,936

07-Apr-2017

13:09

penimc.dll

3.0.6920.8773

68,752

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

presentationhostdll.dll

3.0.6920.8773

131,248

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

 

Applies to

This article applies to the following:

 

  • Microsoft .NET Framework 3.5 when used with:

    • Windows Server 2012

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