Applies to:

Microsoft .NET Framework 4.8

Summary

Quality Improvements

WPF1

- Addresses an issue when rapid typing using an IME can crash via FailFast.

- Addresses an issue where Thaana characters displayed in left-to-right order.

- Addresses a crash when WebBrowser receives a completion event for a navigation it tried to cancel.

CLR2

- Addresses a performance issue caused by incorrect configuration in the GC.

- Addresses an issue where a background GC could pause the runtime for a long period of time if a large managed heap is filled with long lived objects with a deep chain of references.

- Addresses an issue where crashes could occur if security stackwalks were generated during ThreadAbortException handling.

NCL3

- .NET Framework 4.8 will now allow to negotiate TLS 1.3 if underlying OS supports it.

1 Windows Presentation Foundation (WPF)
2 Common Language Runtime (CLR)
3 Network Class Library

Known issues in this update

Microsoft is not currently aware of any issues in this update.

Additional information about this update

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

  • 5003780 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 (KB5003780)

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: Updates

Update removal information

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 replaces previously released updates 5001880.

File Information

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Presentationframework-systemdata.dll

4.8.4380.0

17,800

30-Apr-2021

09:50

x86

None

Not applicable

Presentationframework.dll

4.8.4380.0

6,283,144

30-Apr-2021

09:50

x86

None

Not applicable

Reachframework.dll

4.8.4110.0

677,656

04-Dec-2019

02:55

x86

None

Not applicable

Smdiagnostics.dll

4.8.4261.0

66,328

02-Sep-2020

21:05

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

4.8.4261.0

1,526,528

02-Sep-2020

21:05

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

4.8.4380.0

1,549,088

30-Apr-2021

09:50

x86

None

Not applicable

System.deployment.dll

4.8.4290.0

1,593,624

30-Sep-2020

01:40

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

4.8.4261.0

191,352

02-Sep-2020

21:05

x86

None

Not applicable

System.identitymodel.dll

4.8.4261.0

1,086,744

02-Sep-2020

21:05

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

4.8.4261.0

1,047,312

02-Sep-2020

21:05

x86

None

Not applicable

System.security.dll

4.8.4261.0

320,280

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.activities.dll

4.8.4261.0

555,384

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.channels.dll

4.8.4261.0

150,904

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.discovery.dll

4.8.4261.0

301,432

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.internals.dll

4.8.4261.0

246,528

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.washosting.dll

4.8.4261.0

33,144

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.web.dll

4.8.4261.0

321,792

02-Sep-2020

21:05

x86

None

Not applicable

System.servicemodel.dll

4.8.4261.0

6,383,896

02-Sep-2020

21:05

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

4.8.4330.0

63,768

05-Jan-2021

01:30

x86

None

Not applicable

System.web.extensions.dll

4.8.4330.0

1,842,448

05-Jan-2021

01:30

x86

None

Not applicable

System.windows.controls.ribbon.dll

4.8.4380.0

743,816

30-Apr-2021

09:50

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

4.8.4350.0

5,915,408

31-Mar-2021

03:33

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

4.8.4380.0

632,112

30-Apr-2021

09:50

x86

None

Not applicable

System.dll

4.8.4380.0

3,554,584

30-Apr-2021

09:50

x86

None

Not applicable

Uiautomationclientsideproviders.dll

4.8.4380.0

354,192

30-Apr-2021

09:50

x86

None

Not applicable

Uiautomationclient.dll

4.8.4380.0

170,880

30-Apr-2021

09:50

x86

None

Not applicable

Uiautomationprovider.dll

4.8.4380.0

41,864

30-Apr-2021

09:50

x86

None

Not applicable

Uiautomationtypes.dll

4.8.4380.0

215,944

30-Apr-2021

09:50

x86

None

Not applicable

Windowsbase.dll

4.8.4380.0

1,298,824

30-Apr-2021

09:50

x86

None

Not applicable

Windowsformsintegration.dll

4.8.4150.0

105,240

09-Jan-2020

19:46

x86

None

Not applicable

Mscorlib.dll

4.8.4380.0

5,670,800

30-Apr-2021

09:50

x86

None

Not applicable

Normidna.nlp

Not applicable

59,342

25-Jun-2019

22:47

Not applicable

None

Not applicable

Normnfc.nlp

Not applicable

47,076

25-Jun-2019

22:47

Not applicable

None

Not applicable

Normnfd.nlp

Not applicable

40,566

25-Jun-2019

22:47

Not applicable

None

Not applicable

Normnfkc.nlp

Not applicable

67,808

25-Jun-2019

22:47

Not applicable

None

Not applicable

Normnfkd.nlp

Not applicable

61,718

25-Jun-2019

22:47

Not applicable

None

Not applicable

Aspnet_perf.dll

4.8.4330.0

36,232

05-Jan-2021

01:30

x86

SPN

X86_NETFX4-ASP

Aspnet_state_perf.h

Not applicable

318

04-Jan-2021

23:56

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_state_perf.ini

Not applicable

42,996

05-Jan-2021

01:31

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_wp.exe

4.8.4330.0

39,824

05-Jan-2021

01:30

x86

SPN

X86_NETFX4-ASP

Clrjit.dll

4.8.4380.0

554,888

30-Apr-2021

09:50

x86

None

Not applicable

Clr.dll

4.8.4380.0

8,037,760

30-Apr-2021

09:50

x86

None

Not applicable

Dfdll.dll

4.8.4290.0

178,040

30-Sep-2020

01:40

x86

None

Not applicable

Globalmonospace.compositefont

Not applicable

26,040

21-Jan-2021

23:07

Not applicable

SPA

X86_NETFX4-GLOBALMONOSP

Globalsansserif.compositefont

Not applicable

26,489

21-Jan-2021

23:07

Not applicable

None

Not applicable

Globalserif.compositefont

Not applicable

29,779

21-Jan-2021

23:07

Not applicable

None

Not applicable

Globaluserinterface.compositefont

Not applicable

264,986

30-Jan-2021

02:18

Not applicable

None

Not applicable

Mscordacwks.dll

4.8.4380.0

1,307,536

30-Apr-2021

09:50

x86

None

Not applicable

Mscordbi.dll

4.8.4380.0

1,188,736

30-Apr-2021

09:50

x86

None

Not applicable

Mscoreei.dll

4.8.4180.0

581,920

26-Mar-2020

23:11

x86

None

Not applicable

Mscorsvc.dll

4.8.4330.0

454,024

05-Jan-2021

01:30

x86

None

Not applicable

Mscorsvw.exe

4.8.4330.0

125,872

05-Jan-2021

01:30

x86

None

Not applicable

Ngentask.exe

4.8.4330.0

79,824

05-Jan-2021

01:30

x86

None

Not applicable

Ngen.exe

4.8.4330.0

144,344

05-Jan-2021

01:30

x86

None

Not applicable

Penimc.dll

14.8.4380.0

11,656

30-Apr-2021

09:50

x86

None

Not applicable

Penimc2_v0400.dll

4.8.4380.0

99,728

30-Apr-2021

09:50

x86

None

Not applicable

Penimc_v0400.dll

4.8.4380.0

18,320

30-Apr-2021

09:50

x86

None

Not applicable

Peverify.dll

4.8.4380.0

182,648

30-Apr-2021

09:50

x86

None

Not applicable

Presentationhost_v0400.dll.mui

4.8.4380.0

77,704

30-Apr-2021

09:50

Not applicable

None

Not applicable

Presentationhost_v0400.dll

4.8.4380.0

233,872

30-Apr-2021

09:50

x86

None

Not applicable

Presentationnative_v0400.dll

4.8.4380.0

923,024

30-Apr-2021

09:50

x86

None

Not applicable

Servicemodel.mof

Not applicable

88,383

08-Nov-2019

23:28

Not applicable

None

Not applicable

Servicemodel.mof.uninstall

Not applicable

896

08-Nov-2019

23:28

Not applicable

None

Not applicable

Servicemonikersupport.dll

4.8.4261.0

24,456

02-Sep-2020

21:05

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

08-Nov-2019

03:11

Not applicable

None

Not applicable

Smsvchost.exe.config

Not applicable

2,262

25-Jul-2019

21:42

Not applicable

None

Not applicable

Sos.dll

4.8.4380.0

767,376

30-Apr-2021

09:50

x86

None

Not applicable

System.core.dll

4.8.4380.0

1,549,088

30-Apr-2021

09:50

x86

None

Not applicable

System.web.extensions.dll

4.8.4330.0

1,842,448

05-Jan-2021

01:30

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

4.8.4330.0

564,616

05-Jan-2021

01:30

x86

None

Not applicable

Webengine.dll

4.8.4330.0

19,328

05-Jan-2021

01:30

x86

None

Not applicable

Workflowservicehostperformancecounters.dll

4.8.4110.0

89,368

04-Dec-2019

02:55

x86

None

Not applicable

Wpfgfx_v0400.dll

4.8.4380.0

1,618,808

30-Apr-2021

09:50

x86

None

Not applicable

Globalmonospace.compositefont

Not applicable

26,040

21-Jan-2021

23:07

Not applicable

None

Not applicable

Globalsansserif.compositefont

Not applicable

26,489

21-Jan-2021

23:07

Not applicable

None

Not applicable

Globalserif.compositefont

Not applicable

29,779

21-Jan-2021

23:07

Not applicable

None

Not applicable

Globaluserinterface.compositefont

Not applicable

264,986

30-Jan-2021

02:18

Not applicable

None

Not applicable

Presentationcore.dll

4.8.4380.0

3,674,512

30-Apr-2021

09:50

x86

None

Not applicable

System.data.dll

4.8.4290.0

3,476,360

30-Sep-2020

01:40

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

4.8.4330.0

5,410,184

05-Jan-2021

01:30

x86

None

Not applicable

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