Applies to:

Microsoft .NET Framework 4.8

Summary

Security improvements

ClickOnce will no longer download applications from untrusted servers which use NTLM authentication, but, instead, will fail with “Authentication failed”. Sites in the Local Intranet and Trusted sites zones will continue to authenticate as before.

Quality and reliability improvements

CLR1

- Addresses an issue in some 32 bit apps where, in certain scenarios, the JIT might omit a function call

- Improved support for cleaning up private temporary certificate keys

WPF2

- Addresses an issue with a null-reference crash in automation code, arising from re-entrancy when reconnection to a remote desktop.


1 Common Language Runtime (CLR)
2 Windows Presentation Foundation (WPF)

Additional information about this update

The following articles contain additional information about this update as it relates to individual product versions.

  • 4576629 Description of the Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB4576629)

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.8 installed.

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product:Windows Server 2012

Classification: Security Updates

Prerequisites

To apply this update, you must have .NET Framework 4.8 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 deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

20200908 Security update deployment information: September 8, 2020

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.


File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2012 file information

Note: The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

File information

File hash information

File name

SHA1 hash

SHA256 hash

Windows8-RT-KB4576485-x64-NDP48.msu

DB2969CB1A45A3227530EF5976CA9670108A56BE

355E07C8AFEECF90C33D9426BC37F47C7691EED4ACE2EDA36FC629A7A8873BCE

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Mscorlib.dll

4.8.4240.0

5,431,688

29-Jul-2020

05:27

x64

None

Not applicable

Normidna.nlp

Not applicable

59,342

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfc.nlp

Not applicable

47,076

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfd.nlp

Not applicable

40,566

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfkc.nlp

Not applicable

67,808

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfkd.nlp

Not applicable

61,718

25-Jun-2019

22:53

Not applicable

None

Not applicable

Aspnet_perf.dll

4.8.4210.0

41,864

30-Jun-2020

01:38

x64

SPN

AMD64_NETFX4-ASP

Aspnet_state_perf.h

Not applicable

318

29-Jun-2020

22:16

Not applicable

SPN

AMD64_NETFX4-ASP

Aspnet_state_perf.ini

Not applicable

42,996

30-Jun-2020

01:39

Not applicable

SPN

AMD64_NETFX4-ASP

Aspnet_wp.exe

4.8.4210.0

45,448

30-Jun-2020

01:38

x64

SPN

AMD64_NETFX4-ASP

Clrjit.dll

4.8.4240.0

1,357,696

29-Jul-2020

05:27

x64

None

Not applicable

Clr.dll

4.8.4240.0

11,244,936

29-Jul-2020

05:27

x64

None

Not applicable

Compatjit.dll

4.8.4240.0

1,273,208

29-Jul-2020

05:27

x64

None

Not applicable

Dfdll.dll

4.8.4240.0

214,912

29-Jul-2020

05:27

x64

None

Not applicable

Globalmonospace.compositefont

Not applicable

26,040

03-Feb-2020

13:25

Not applicable

SPA

AMD64_NETFX4-GLOBALMONOSP

Globalsansserif.compositefont

Not applicable

26,489

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globalserif.compositefont

Not applicable

29,779

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globaluserinterface.compositefont

Not applicable

264,986

21-Jul-2020

02:16

Not applicable

None

Not applicable

Mscordacwks.dll

4.8.4240.0

1,801,096

29-Jul-2020

05:27

x64

None

Not applicable

Mscordbi.dll

4.8.4240.0

1,655,168

29-Jul-2020

05:27

x64

None

Not applicable

Mscoreei.dll

4.8.4180.0

689,952

26-Mar-2020

23:10

x64

None

Not applicable

Penimc.dll

14.8.4240.0

11,656

29-Jul-2020

05:27

x64

None

Not applicable

Penimc2_v0400.dll

4.8.4240.0

120,712

29-Jul-2020

05:27

x64

None

Not applicable

Penimc_v0400.dll

4.8.4240.0

20,352

29-Jul-2020

05:27

x64

None

Not applicable

Peverify.dll

4.8.4240.0

265,600

29-Jul-2020

05:27

x64

None

Not applicable

Presentationframework-systemdata.dll

4.8.4240.0

17,800

29-Jul-2020

06:14

x86

None

Not applicable

Presentationframework.dll

4.8.4240.0

6,269,832

29-Jul-2020

06:14

x86

None

Not applicable

Presentationhost_v0400.dll.mui

4.8.4240.0

77,696

29-Jul-2020

05:27

Not applicable

None

Not applicable

Presentationhost_v0400.dll

4.8.4240.0

302,464

29-Jul-2020

05:27

x64

None

Not applicable

Presentationnative_v0400.dll

4.8.4240.0

1,164,168

29-Jul-2020

05:27

x64

None

Not applicable

Reachframework.dll

4.8.4110.0

677,656

04-Dec-2019

02:55

x86

None

Not applicable

Servicemodel.mof

Not applicable

88,383

29-Feb-2020

03:01

Not applicable

None

Not applicable

Servicemodel.mof.uninstall

Not applicable

896

29-Feb-2020

03:01

Not applicable

None

Not applicable

Servicemonikersupport.dll

4.8.4210.0

27,528

30-Jun-2020

01:38

x64

None

Not applicable

Smdiagnostics.dll

4.8.4210.0

66,312

30-Jun-2020

01:55

x86

None

Not applicable

_smsvchostperfcounters.h

Not applicable

702

06-Dec-2019

22:20

Not applicable

None

Not applicable

_smsvchostperfcounters.ini

Not applicable

133,894

07-Dec-2019

06:04

Not applicable

None

Not applicable

_smsvchostperfcounters_d.ini

Not applicable

39

09-Nov-2019

00:37

Not applicable

None

Not applicable

Smsvchost.exe

4.8.4121.0

139,056

07-Dec-2019

06:03

x86

None

Not applicable

Smsvchost.exe.config

Not applicable

2,262

21-Nov-2019

02:58

Not applicable

None

Not applicable

Sos.dll

4.8.4240.0

921,480

29-Jul-2020

05:27

x64

None

Not applicable

System.activities.presentation.dll

4.8.4150.0

2,127,128

09-Jan-2020

19:46

x86

None

Not applicable

System.activities.dll

4.8.4210.0

1,526,536

30-Jun-2020

01:55

x86

None

Not applicable

System.configuration.dll

4.8.4190.0

421,536

05-Jun-2020

05:04

x86

None

Not applicable

System.core.dll

4.8.4240.0

1,549,080

29-Jul-2020

06:14

x86

None

Not applicable

System.deployment.dll

4.8.4240.0

1,595,136

29-Jul-2020

06:14

x86

None

Not applicable

System.drawing.design.dll

4.8.4210.0

125,192

30-Jun-2020

01:55

x86

None

Not applicable

System.identitymodel.services.dll

4.8.4210.0

191,352

30-Jun-2020

01:55

x86

None

Not applicable

System.identitymodel.dll

4.8.4210.0

1,086,720

30-Jun-2020

01:55

x86

None

Not applicable

System.net.sockets.dll

4.8.4121.0

30,360

07-Dec-2019

06:03

x86

None

Not applicable

System.runtime.serialization.dll

4.8.4210.0

1,047,296

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.channels.dll

4.8.4210.0

150,920

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.discovery.dll

4.8.4210.0

301,448

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.internals.dll

4.8.4210.0

246,536

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.washosting.dll

4.8.4210.0

33,160

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.dll

4.8.4210.0

6,381,832

30-Jun-2020

01:55

x86

None

Not applicable

System.speech.dll

4.8.4210.0

676,736

30-Jun-2020

01:55

x86

SPE

AMD64_NETFX4-SYSTEM.SP

System.web.applicationservices.dll

4.8.4210.0

63,752

30-Jun-2020

01:55

x86

None

Not applicable

System.web.extensions.dll

4.8.4210.0

1,842,440

30-Jun-2020

01:55

x86

None

Not applicable

System.windows.forms.datavisualization.dll

4.8.4210.0

1,712,512

30-Jun-2020

01:55

x86

None

Not applicable

System.windows.controls.ribbon.dll

4.8.4240.0

743,816

29-Jul-2020

06:14

x86

None

Not applicable

System.windows.forms.dll

4.8.4210.0

5,915,912

30-Jun-2020

01:55

x86

None

Not applicable

System.workflow.activities.dll

4.8.4110.0

1,051,112

04-Dec-2019

02:55

x86

None

Not applicable

System.workflow.componentmodel.dll

4.8.4110.0

1,557,272

04-Dec-2019

02:55

x86

None

Not applicable

System.workflow.runtime.dll

4.8.4110.0

503,064

04-Dec-2019

02:55

x86

None

Not applicable

System.xaml.dll

4.8.4240.0

632,088

29-Jul-2020

06:14

x86

None

Not applicable

System.dll

4.8.4210.0

3,552,520

30-Jun-2020

01:55

x86

None

Not applicable

Uiautomationclientsideproviders.dll

4.8.4240.0

354,184

29-Jul-2020

06:14

x86

None

Not applicable

Uiautomationclient.dll

4.8.4240.0

170,888

29-Jul-2020

06:14

x86

None

Not applicable

Uiautomationprovider.dll

4.8.4240.0

41,864

29-Jul-2020

06:14

x86

None

Not applicable

Uiautomationtypes.dll

4.8.4240.0

215,944

29-Jul-2020

06:14

x86

None

Not applicable

Webengine4.dll

4.8.4210.0

675,200

30-Jun-2020

01:38

x64

None

Not applicable

Webengine.dll

4.8.4210.0

21,384

30-Jun-2020

01:38

x64

None

Not applicable

Windowsbase.dll

4.8.4240.0

1,298,816

29-Jul-2020

06:14

x86

None

Not applicable

Windowsformsintegration.dll

4.8.4150.0

105,240

09-Jan-2020

19:46

x86

None

Not applicable

Workflowservicehostperformancecounters.dll

4.8.4110.0

102,672

04-Dec-2019

02:54

x64

None

Not applicable

Wpfgfx_v0400.dll

4.8.4240.0

2,050,440

29-Jul-2020

05:27

x64

None

Not applicable

Globalmonospace.compositefont

Not applicable

26,040

08-Nov-2019

23:40

Not applicable

None

Not applicable

Globalsansserif.compositefont

Not applicable

26,489

08-Nov-2019

23:40

Not applicable

None

Not applicable

Globalserif.compositefont

Not applicable

29,779

08-Nov-2019

23:40

Not applicable

None

Not applicable

Globaluserinterface.compositefont

Not applicable

264,986

08-Nov-2019

23:40

Not applicable

None

Not applicable

Presentationcore.dll

4.8.4240.0

3,648,384

29-Jul-2020

05:27

x64

None

Not applicable

System.data.dll

4.8.4210.0

3,542,400

30-Jun-2020

01:38

x64

None

Not applicable

System.printing.dll

4.8.4110.0

400,152

04-Dec-2019

02:54

x64

None

Not applicable

System.web.dll

4.8.4210.0

5,396,864

30-Jun-2020

01:38

x64

None

Not applicable

Presentationframework-systemdata.dll

4.8.4240.0

17,800

29-Jul-2020

06:14

x86

None

Not applicable

Presentationframework.dll

4.8.4240.0

6,269,832

29-Jul-2020

06:14

x86

None

Not applicable

Reachframework.dll

4.8.4110.0

677,656

04-Dec-2019

02:55

x86

None

Not applicable

Smdiagnostics.dll

4.8.4210.0

66,312

30-Jun-2020

01:55

x86

None

Not applicable

Smsvchost.exe

4.8.4121.0

139,056

07-Dec-2019

06:03

x86

None

Not applicable

System.activities.presentation.dll

4.8.4150.0

2,127,128

09-Jan-2020

19:46

x86

None

Not applicable

System.activities.dll

4.8.4210.0

1,526,536

30-Jun-2020

01:55

x86

None

Not applicable

System.configuration.dll

4.8.4190.0

421,536

05-Jun-2020

05:04

x86

None

Not applicable

System.core.dll

4.8.4240.0

1,549,080

29-Jul-2020

06:14

x86

None

Not applicable

System.deployment.dll

4.8.4240.0

1,595,136

29-Jul-2020

06:14

x86

None

Not applicable

System.drawing.design.dll

4.8.4210.0

125,192

30-Jun-2020

01:55

x86

None

Not applicable

System.identitymodel.services.dll

4.8.4210.0

191,352

30-Jun-2020

01:55

x86

None

Not applicable

System.identitymodel.dll

4.8.4210.0

1,086,720

30-Jun-2020

01:55

x86

None

Not applicable

System.net.sockets.dll

4.8.4121.0

30,360

07-Dec-2019

06:03

x86

None

Not applicable

System.runtime.serialization.dll

4.8.4210.0

1,047,296

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.channels.dll

4.8.4210.0

150,920

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.discovery.dll

4.8.4210.0

301,448

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.internals.dll

4.8.4210.0

246,536

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.washosting.dll

4.8.4210.0

33,160

30-Jun-2020

01:55

x86

None

Not applicable

System.servicemodel.dll

4.8.4210.0

6,381,832

30-Jun-2020

01:55

x86

None

Not applicable

System.speech.dll

4.8.4210.0

676,736

30-Jun-2020

01:55

x86

SPE

MSIL_SYSTEM.SP

System.web.applicationservices.dll

4.8.4210.0

63,752

30-Jun-2020

01:55

x86

None

Not applicable

System.web.extensions.dll

4.8.4210.0

1,842,440

30-Jun-2020

01:55

x86

None

Not applicable

System.windows.controls.ribbon.dll

4.8.4240.0

743,816

29-Jul-2020

06:14

x86

None

Not applicable

System.windows.forms.datavisualization.dll

4.8.4210.0

1,712,512

30-Jun-2020

01:55

x86

None

Not applicable

System.windows.forms.dll

4.8.4210.0

5,915,912

30-Jun-2020

01:55

x86

None

Not applicable

System.workflow.activities.dll

4.8.4110.0

1,051,112

04-Dec-2019

02:55

x86

None

Not applicable

System.workflow.componentmodel.dll

4.8.4110.0

1,557,272

04-Dec-2019

02:55

x86

None

Not applicable

System.workflow.runtime.dll

4.8.4110.0

503,064

04-Dec-2019

02:55

x86

None

Not applicable

System.xaml.dll

4.8.4240.0

632,088

29-Jul-2020

06:14

x86

None

Not applicable

System.dll

4.8.4210.0

3,552,520

30-Jun-2020

01:55

x86

None

Not applicable

Uiautomationclientsideproviders.dll

4.8.4240.0

354,184

29-Jul-2020

06:14

x86

None

Not applicable

Uiautomationclient.dll

4.8.4240.0

170,888

29-Jul-2020

06:14

x86

None

Not applicable

Uiautomationprovider.dll

4.8.4240.0

41,864

29-Jul-2020

06:14

x86

None

Not applicable

Uiautomationtypes.dll

4.8.4240.0

215,944

29-Jul-2020

06:14

x86

None

Not applicable

Windowsbase.dll

4.8.4240.0

1,298,816

29-Jul-2020

06:14

x86

None

Not applicable

Windowsformsintegration.dll

4.8.4150.0

105,240

09-Jan-2020

19:46

x86

None

Not applicable

Mscorlib.dll

4.8.4240.0

5,670,792

29-Jul-2020

06:14

x86

None

Not applicable

Normidna.nlp

Not applicable

59,342

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfc.nlp

Not applicable

47,076

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfd.nlp

Not applicable

40,566

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfkc.nlp

Not applicable

67,808

25-Jun-2019

22:53

Not applicable

None

Not applicable

Normnfkd.nlp

Not applicable

61,718

25-Jun-2019

22:53

Not applicable

None

Not applicable

Aspnet_perf.dll

4.8.4210.0

36,224

30-Jun-2020

01:55

x86

SPN

X86_NETFX4-ASP

Aspnet_state_perf.h

Not applicable

318

29-Jun-2020

22:08

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_state_perf.ini

Not applicable

42,996

30-Jun-2020

01:57

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_wp.exe

4.8.4210.0

39,816

30-Jun-2020

01:55

x86

SPN

X86_NETFX4-ASP

Clrjit.dll

4.8.4240.0

554,888

29-Jul-2020

06:14

x86

None

Not applicable

Clr.dll

4.8.4240.0

8,037,768

29-Jul-2020

06:14

x86

None

Not applicable

Dfdll.dll

4.8.4240.0

178,056

29-Jul-2020

06:14

x86

None

Not applicable

Globalmonospace.compositefont

Not applicable

26,040

03-Feb-2020

13:25

Not applicable

SPA

X86_NETFX4-GLOBALMONOSP

Globalsansserif.compositefont

Not applicable

26,489

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globalserif.compositefont

Not applicable

29,779

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globaluserinterface.compositefont

Not applicable

264,986

21-Jul-2020

02:16

Not applicable

None

Not applicable

Mscordacwks.dll

4.8.4240.0

1,307,520

29-Jul-2020

06:14

x86

None

Not applicable

Mscordbi.dll

4.8.4240.0

1,188,744

29-Jul-2020

06:14

x86

None

Not applicable

Mscoreei.dll

4.8.4180.0

581,920

26-Mar-2020

23:11

x86

None

Not applicable

Penimc.dll

14.8.4240.0

11,656

29-Jul-2020

06:14

x86

None

Not applicable

Penimc2_v0400.dll

4.8.4240.0

99,712

29-Jul-2020

06:14

x86

None

Not applicable

Penimc_v0400.dll

4.8.4240.0

18,312

29-Jul-2020

06:14

x86

None

Not applicable

Peverify.dll

4.8.4240.0

182,656

29-Jul-2020

06:14

x86

None

Not applicable

Presentationhost_v0400.dll.mui

4.8.4240.0

77,704

29-Jul-2020

06:14

Not applicable

None

Not applicable

Presentationhost_v0400.dll

4.8.4240.0

233,848

29-Jul-2020

06:14

x86

None

Not applicable

Presentationnative_v0400.dll

4.8.4240.0

923,000

29-Jul-2020

06:14

x86

None

Not applicable

Servicemonikersupport.dll

4.8.4210.0

24,448

30-Jun-2020

01:55

x86

None

Not applicable

Smsvchost.exe.config

Not applicable

2,262

25-Jul-2019

21:42

Not applicable

None

Not applicable

Sos.dll

4.8.4240.0

767,368

29-Jul-2020

06:14

x86

None

Not applicable

System.core.dll

4.8.4240.0

1,549,080

29-Jul-2020

06:14

x86

None

Not applicable

System.web.extensions.dll

4.8.4210.0

1,842,440

30-Jun-2020

01:55

x86

None

Not applicable

System.windows.forms.datavisualization.dll

4.8.4210.0

1,712,512

30-Jun-2020

01:55

x86

None

Not applicable

Webengine4.dll

4.8.4210.0

564,616

30-Jun-2020

01:55

x86

None

Not applicable

Webengine.dll

4.8.4210.0

19,320

30-Jun-2020

01:55

x86

None

Not applicable

Workflowservicehostperformancecounters.dll

4.8.4110.0

89,368

04-Dec-2019

02:55

x86

None

Not applicable

Wpfgfx_v0400.dll

4.8.4240.0

1,618,824

29-Jul-2020

06:14

x86

None

Not applicable

Globalmonospace.compositefont

Not applicable

26,040

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globalsansserif.compositefont

Not applicable

26,489

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globalserif.compositefont

Not applicable

29,779

03-Feb-2020

13:25

Not applicable

None

Not applicable

Globaluserinterface.compositefont

Not applicable

264,986

21-Jul-2020

02:16

Not applicable

None

Not applicable

Presentationcore.dll

4.8.4240.0

3,671,432

29-Jul-2020

06:14

x86

None

Not applicable

System.data.dll

4.8.4210.0

3,475,320

30-Jun-2020

01:55

x86

None

Not applicable

System.printing.dll

4.8.4110.0

399,640

04-Dec-2019

02:55

x86

None

Not applicable

System.web.dll

4.8.4210.0

5,409,152

30-Jun-2020

01:55

x86

None

Not applicable

Information about protection and security

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