Applies to:

Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2

IMPORTANT Verify that you have installed the required updates listed in the How to get this update section before installing this update. 

IMPORTANT Some customers who use Windows Server 2008 R2 SP1 and have activated their ESU multiple activation key (MAK) add-on before installing the January 14, 2020 updates might need to re-activate their key. Re-activation on the affected devices should only be required once.  For information on activation, see this blog post.

IMPORTANT WSUS scan cab files will continue to be available for Windows 7 SP1 and Windows Server 2008 R2 SP1. If you have a subset of devices running these operating systems without ESU, they might show as non-compliant in your patch management and compliance toolsets.

IMPORTANT Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in KB4522133 to continue receiving security updates after extended support ends on January 14, 2020. For more information on ESU and which editions are supported, see KB4497181.

IMPORTANT Starting on January 15, 2020, a full-screen notification will appear that describes the risk of continuing to use Windows 7 Service Pack 1 after it reaches end of support on January 14, 2020. The notification will remain on the screen until you interact with it. This notification will only appear on the following editions of Windows 7 Service Pack 1:

Note The notification will not appear on domain-joined machines or machines in kiosk mode.

IMPORTANT Starting in August, 2019, updates to .NET Framework 4.6 and above, for Windows Server 2008 SP1, Windows Server 2008 R2 SP1, and Windows 7SP1, require SHA-2 Code signing support. Please make sure that you have all the latest Windows Updates before applying this update to avoid installation issues. For more detailed information about SHA-2 code signing support updates, please see KB 4474419.

IMPORTANT All updates for .NET Framework 4.7.2, 4.7.1, 4.7, 4.6.2, 4.6.1, and 4.6 require that the d3dcompiler_47.dll update is installed. We recommend that you install the included d3dcompiler_47.dll update before you apply this update. For more information about the d3dcompiler_47.dll, see KB 4019990.

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.

Summary

Quality Improvements

WPF1

- Addresses an issue with lag responding to typing in TextBox, when spell-checking is enabled that was introduced in an update earlier this year.

- Addresses an issue with a leak of touch-related resources, including OS handles, when closing a window. The leak only occurs when a touch device is active, and only for windows whose HwndSource is created directly by the app.

- Addresses a crash when docking a window within Visual Studio, or, more generally, disposing an HwndSource whose RootVisual is null.

1 Windows Presentation Foundation (WPF)

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.

  • 5001882 Description of the Security and Quality Rollup for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008 SP2 (KB5001882)

  • 5001878 Description of the Security and Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1 (KB5001878)

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 installed.

You must install the updates listed below and restart your device before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.

  1. The March 12, 2019 servicing stack update (SSU) (KB4490628). To get the standalone package for this SSU, search for it in the Microsoft Update Catalog. This update is required to install updates that are only SHA-2 signed.

  2. The latest SHA-2 update (KB4474419) released September 10, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

  3. The Extended Security Updates (ESU) Licensing Preparation Package (KB4538483) released February 11, 2020. The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the Microsoft Update Catalog.

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 if you are an ESU customer.

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 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1,Windows Embedded Standard 7 Service Pack 1, Windows Embedded POSReady 7

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 4598503. 4579980. 4603002.

File Information

x86

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.7.3771.0

35,704

26-Apr-2021

18:43

aspnet_wp.exe

4.7.3771.0

39,296

26-Apr-2021

18:43

clr.dll

4.7.3750.0

7,247,752

26-Apr-2021

18:43

clrjit.dll

4.7.3750.0

515,976

26-Apr-2021

18:43

dfdll.dll

4.7.3221.0

159,952

26-Apr-2021

18:43

GlobalUserInterface.CompositeFont

186,009

26-Apr-2021

18:43

mscordacwks.dll

4.7.3750.0

1,336,200

26-Apr-2021

18:43

mscordbi.dll

4.7.3750.0

1,162,112

26-Apr-2021

18:43

mscoreei.dll

4.7.3468.0

512,488

26-Apr-2021

18:43

mscorlib.dll

4.7.3750.0

5,638,536

26-Apr-2021

18:43

mscorsvc.dll

4.7.3771.0

424,824

26-Apr-2021

18:43

mscorsvw.exe

4.7.3771.0

100,800

26-Apr-2021

18:43

msvcp120_clr0400.dll

12.0.52519.0

485,576

26-Apr-2021

18:43

msvcr120_clr0400.dll

12.0.52519.0

987,840

26-Apr-2021

18:43

ngen.exe

4.7.3771.0

135,144

26-Apr-2021

18:43

VsVersion.dll

14.7.3791.0

12,176

26-Apr-2021

18:43

peverify.dll

4.7.3750.0

181,640

26-Apr-2021

18:43

PresentationCore.dll

4.7.3791.0

3,635,080

26-Apr-2021

18:43

PresentationFramework.dll

4.7.3791.0

6,245,264

26-Apr-2021

18:43

PresentationFramework-SystemData.dll

4.7.3791.0

17,288

26-Apr-2021

18:43

PresentationHost_v0400.dll

4.7.3791.0

207,240

26-Apr-2021

18:43

PresentationHost_v0400.dll.mui

4.7.3791.0

77,704

26-Apr-2021

18:43

PresentationNative_v0400.dll

4.7.3791.0

820,104

26-Apr-2021

18:43

ReachFramework.dll

4.7.3570.0

677,656

26-Apr-2021

18:43

ServiceMonikerSupport.dll

4.7.3620.0

30,192

26-Apr-2021

18:43

SMDiagnostics.dll

4.7.3620.0

74,840

26-Apr-2021

18:43

SMSvcHost.exe

4.7.3515.0

139,264

26-Apr-2021

18:43

SOS.dll

4.7.3750.0

736,648

26-Apr-2021

18:43

System.Speech.dll

4.7.3650.0

675,720

26-Apr-2021

18:43

System.Activities.dll

4.7.3620.0

1,534,008

26-Apr-2021

18:43

System.ComponentModel.DataAnnotations.dll

4.7.3221.0

127,400

26-Apr-2021

18:43

System.Core.dll

4.7.3791.0

1,544,960

26-Apr-2021

18:43

System.Data.Entity.dll

4.7.3221.0

4,035,664

26-Apr-2021

18:43

System.DirectoryServices.AccountManagement.dll

4.7.3221.0

297,648

26-Apr-2021

18:43

System.IdentityModel.dll

4.7.3620.0

1,095,736

26-Apr-2021

18:43

System.IdentityModel.Services.dll

4.7.3620.0

199,160

26-Apr-2021

18:43

System.Printing.dll

4.7.3570.0

374,032

26-Apr-2021

18:43

System.Runtime.Serialization.dll

4.7.3620.0

1,057,336

26-Apr-2021

18:43

System.ServiceModel.Channels.dll

4.7.3620.0

158,704

26-Apr-2021

18:43

System.ServiceModel.Discovery.dll

4.7.3620.0

309,232

26-Apr-2021

18:43

System.ServiceModel.dll

4.7.3620.0

6,324,792

26-Apr-2021

18:43

System.ServiceModel.Internals.dll

4.7.3620.0

261,688

26-Apr-2021

18:43

System.ServiceModel.Routing.dll

4.7.3221.0

132,208

26-Apr-2021

18:43

System.ServiceModel.WasHosting.dll

4.7.3620.0

40,944

26-Apr-2021

18:43

System.Web.ApplicationServices.dll

4.7.3771.0

63,768

26-Apr-2021

18:43

System.Web.Extensions.dll

4.7.3771.0

1,842,960

26-Apr-2021

18:43

System.Workflow.Activities.dll

4.7.3570.0

1,052,136

26-Apr-2021

18:43

System.Workflow.ComponentModel.dll

4.7.3570.0

1,553,896

26-Apr-2021

18:43

System.Workflow.Runtime.dll

4.7.3570.0

499,480

26-Apr-2021

18:43

System.Runtime.Caching.dll

4.7.3221.0

109,864

26-Apr-2021

18:43

System.Configuration.dll

4.7.3630.0

420,512

26-Apr-2021

18:43

System.Data.dll

4.7.3730.0

3,464,568

26-Apr-2021

18:43

System.Data.SqlXml.dll

4.7.3221.0

734,520

26-Apr-2021

18:43

System.Deployment.dll

4.7.3221.0

879,408

26-Apr-2021

18:43

System.DirectoryServices.Protocols.dll

4.7.3221.0

201,624

26-Apr-2021

18:43

System.dll

4.7.3650.0

3,556,616

26-Apr-2021

18:43

System.Drawing.dll

4.7.3221.0

600,864

26-Apr-2021

18:43

System.Management.dll

4.7.3221.0

415,536

26-Apr-2021

18:43

System.Net.Http.dll

4.7.3221.0

204,584

26-Apr-2021

18:43

System.Runtime.Remoting.dll

4.7.3221.0

347,472

26-Apr-2021

18:43

System.Security.dll

4.7.3701.0

318,712

26-Apr-2021

18:43

System.Transactions.dll

4.7.3221.0

309,328

26-Apr-2021

18:43

System.Web.dll

4.7.3771.0

5,409,680

26-Apr-2021

18:43

System.Windows.Controls.Ribbon.dll

4.7.3791.0

739,192

26-Apr-2021

18:43

System.Windows.Forms.dll

4.7.3701.0

5,234,432

26-Apr-2021

18:43

System.Xaml.dll

4.7.3791.0

635,184

26-Apr-2021

18:43

System.Xml.dll

4.7.3221.0

2,670,344

26-Apr-2021

18:43

UIAutomationClient.dll

4.7.3791.0

170,888

26-Apr-2021

18:43

UIAutomationClientsideProviders.dll

4.7.3791.0

354,184

26-Apr-2021

18:43

UIAutomationProvider.dll

4.7.3791.0

41,864

26-Apr-2021

18:43

UIAutomationTypes.dll

4.7.3791.0

213,904

26-Apr-2021

18:43

webengine.dll

4.7.3771.0

17,784

26-Apr-2021

18:43

webengine4.dll

4.7.3771.0

543,120

26-Apr-2021

18:43

WindowsBase.dll

4.7.3791.0

1,289,080

26-Apr-2021

18:43

WMINet_Utils.dll

4.7.3221.0

136,432

26-Apr-2021

18:43

WorkflowServiceHostPerformanceCounters.dll

4.7.3570.0

89,880

26-Apr-2021

18:43

WPFFontCache_v0400.exe.mui

4.7.3791.0

12,168

26-Apr-2021

18:43

WPFFontCache_v0400.exe

4.7.3791.0

18,848

26-Apr-2021

18:43

wpfgfx_v0400.dll

4.7.3791.0

1,338,752

26-Apr-2021

18:43

Placeholder.dll

4.7.3791.0

17,800

26-Apr-2021

18:43

PenIMC2_v0400.dll

4.7.3791.0

79,240

26-Apr-2021

18:43

x64

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.7.3771.0

39,312

26-Apr-2021

18:43

Aspnet_perf.dll

4.7.3771.0

35,704

26-Apr-2021

18:43

aspnet_wp.exe

4.7.3771.0

43,928

26-Apr-2021

18:43

aspnet_wp.exe

4.7.3771.0

39,296

26-Apr-2021

18:43

clr.dll

4.7.3750.0

10,368,904

26-Apr-2021

18:43

clr.dll

4.7.3750.0

7,247,752

26-Apr-2021

18:43

clrjit.dll

4.7.3750.0

1,214,344

26-Apr-2021

18:43

clrjit.dll

4.7.3750.0

515,976

26-Apr-2021

18:43

compatjit.dll

4.7.3750.0

1,252,744

26-Apr-2021

18:43

dfdll.dll

4.7.3221.0

191,696

26-Apr-2021

18:43

dfdll.dll

4.7.3221.0

159,952

26-Apr-2021

18:43

GlobalUserInterface.CompositeFont

186,009

26-Apr-2021

18:43

mscordacwks.dll

4.7.3750.0

1,833,856

26-Apr-2021

18:43

mscordacwks.dll

4.7.3750.0

1,336,200

26-Apr-2021

18:43

mscordbi.dll

4.7.3750.0

1,615,240

26-Apr-2021

18:43

mscordbi.dll

4.7.3750.0

1,162,112

26-Apr-2021

18:43

mscoreei.dll

4.7.3468.0

631,272

26-Apr-2021

18:43

mscoreei.dll

4.7.3468.0

512,488

26-Apr-2021

18:43

mscorlib.dll

4.7.3750.0

5,420,424

26-Apr-2021

18:43

mscorlib.dll

4.7.3750.0

5,638,536

26-Apr-2021

18:43

mscorsvc.dll

4.7.3771.0

538,000

26-Apr-2021

18:43

mscorsvc.dll

4.7.3771.0

424,824

26-Apr-2021

18:43

mscorsvw.exe

4.7.3771.0

121,768

26-Apr-2021

18:43

mscorsvw.exe

4.7.3771.0

100,800

26-Apr-2021

18:43

msvcp120_clr0400.dll

12.0.52519.0

690,008

26-Apr-2021

19:40

msvcp120_clr0400.dll

12.0.52519.0

485,576

26-Apr-2021

18:43

msvcr120_clr0400.dll

12.0.52519.0

993,632

26-Apr-2021

19:40

msvcr120_clr0400.dll

12.0.52519.0

987,840

26-Apr-2021

18:43

ngen.exe

4.7.3771.0

167,400

26-Apr-2021

18:43

ngen.exe

4.7.3771.0

135,144

26-Apr-2021

18:43

VsVersion.dll

14.7.3791.0

12,176

26-Apr-2021

19:40

VsVersion.dll

14.7.3791.0

12,176

26-Apr-2021

18:43

peverify.dll

4.7.3750.0

253,832

26-Apr-2021

18:43

peverify.dll

4.7.3750.0

181,640

26-Apr-2021

18:43

PresentationCore.dll

4.7.3791.0

3,613,064

26-Apr-2021

19:40

PresentationCore.dll

4.7.3791.0

3,635,080

26-Apr-2021

18:43

PresentationFramework.dll

4.7.3791.0

6,245,264

26-Apr-2021

18:43

PresentationFramework-SystemData.dll

4.7.3791.0

17,288

26-Apr-2021

18:43

PresentationHost_v0400.dll

4.7.3791.0

270,728

26-Apr-2021

19:40

PresentationHost_v0400.dll.mui

4.7.3791.0

77,704

26-Apr-2021

19:40

PresentationHost_v0400.dll

4.7.3791.0

207,240

26-Apr-2021

18:43

PresentationHost_v0400.dll.mui

4.7.3791.0

77,704

26-Apr-2021

18:43

PresentationNative_v0400.dll

4.7.3791.0

1,102,728

26-Apr-2021

19:40

PresentationNative_v0400.dll

4.7.3791.0

820,104

26-Apr-2021

18:43

ReachFramework.dll

4.7.3570.0

677,656

26-Apr-2021

18:43

ServiceMonikerSupport.dll

4.7.3620.0

32,240

26-Apr-2021

18:43

ServiceMonikerSupport.dll

4.7.3620.0

30,192

26-Apr-2021

18:43

SMDiagnostics.dll

4.7.3620.0

74,840

26-Apr-2021

18:43

SMSvcHost.exe

4.7.3515.0

139,264

26-Apr-2021

18:43

SOS.dll

4.7.3750.0

865,152

26-Apr-2021

18:43

SOS.dll

4.7.3750.0

736,648

26-Apr-2021

18:43

System.Speech.dll

4.7.3650.0

675,720

26-Apr-2021

18:43

System.Activities.dll

4.7.3620.0

1,534,008

26-Apr-2021

18:43

System.ComponentModel.DataAnnotations.dll

4.7.3221.0

127,400

26-Apr-2021

18:43

System.Core.dll

4.7.3791.0

1,544,960

26-Apr-2021

18:43

System.Data.Entity.dll

4.7.3221.0

4,035,664

26-Apr-2021

18:43

System.DirectoryServices.AccountManagement.dll

4.7.3221.0

297,648

26-Apr-2021

18:43

System.IdentityModel.dll

4.7.3620.0

1,095,736

26-Apr-2021

18:43

System.IdentityModel.Services.dll

4.7.3620.0

199,160

26-Apr-2021

18:43

System.Printing.dll

4.7.3570.0

374,552

26-Apr-2021

18:43

System.Printing.dll

4.7.3570.0

374,032

26-Apr-2021

18:43

System.Runtime.Serialization.dll

4.7.3620.0

1,057,336

26-Apr-2021

18:43

System.ServiceModel.Channels.dll

4.7.3620.0

158,704

26-Apr-2021

18:43

System.ServiceModel.Discovery.dll

4.7.3620.0

309,232

26-Apr-2021

18:43

System.ServiceModel.dll

4.7.3620.0

6,324,792

26-Apr-2021

18:43

System.ServiceModel.Internals.dll

4.7.3620.0

261,688

26-Apr-2021

18:43

System.ServiceModel.Routing.dll

4.7.3221.0

132,208

26-Apr-2021

18:43

System.ServiceModel.WasHosting.dll

4.7.3620.0

40,944

26-Apr-2021

18:43

System.Web.ApplicationServices.dll

4.7.3771.0

63,768

26-Apr-2021

18:43

System.Web.Extensions.dll

4.7.3771.0

1,842,960

26-Apr-2021

18:43

System.Workflow.Activities.dll

4.7.3570.0

1,052,136

26-Apr-2021

18:43

System.Workflow.ComponentModel.dll

4.7.3570.0

1,553,896

26-Apr-2021

18:43

System.Workflow.Runtime.dll

4.7.3570.0

499,480

26-Apr-2021

18:43

System.Runtime.Caching.dll

4.7.3221.0

109,864

26-Apr-2021

18:43

System.configuration.dll

4.7.3630.0

420,512

26-Apr-2021

18:43

System.Data.dll

4.7.3730.0

3,526,536

26-Apr-2021

18:43

System.Data.dll

4.7.3730.0

3,464,568

26-Apr-2021

18:43

System.Data.SqlXml.dll

4.7.3221.0

734,520

26-Apr-2021

18:43

System.Deployment.dll

4.7.3221.0

879,408

26-Apr-2021

18:43

System.DirectoryServices.Protocols.dll

4.7.3221.0

201,624

26-Apr-2021

18:43

System.dll

4.7.3650.0

3,556,616

26-Apr-2021

18:43

System.Drawing.dll

4.7.3221.0

600,864

26-Apr-2021

18:43

System.Management.dll

4.7.3221.0

415,536

26-Apr-2021

18:43

System.Net.Http.dll

4.7.3221.0

204,584

26-Apr-2021

18:43

System.Runtime.Remoting.dll

4.7.3221.0

347,472

26-Apr-2021

18:43

System.Security.dll

4.7.3701.0

318,712

26-Apr-2021

18:43

System.Transactions.dll

4.7.3221.0

311,048

26-Apr-2021

18:43

System.Transactions.dll

4.7.3221.0

309,328

26-Apr-2021

18:43

System.Web.dll

4.7.3771.0

5,392,760

26-Apr-2021

18:43

System.Web.dll

4.7.3771.0

5,409,680

26-Apr-2021

18:43

System.Windows.Controls.Ribbon.dll

4.7.3791.0

739,192

26-Apr-2021

18:43

System.Windows.Forms.dll

4.7.3701.0

5,234,432

26-Apr-2021

18:43

System.Xaml.dll

4.7.3791.0

635,184

26-Apr-2021

18:43

System.XML.dll

4.7.3221.0

2,670,344

26-Apr-2021

18:43

UIAutomationClient.dll

4.7.3791.0

170,888

26-Apr-2021

18:43

UIAutomationClientsideProviders.dll

4.7.3791.0

354,184

26-Apr-2021

18:43

UIAutomationProvider.dll

4.7.3791.0

41,864

26-Apr-2021

18:43

UIAutomationTypes.dll

4.7.3791.0

213,904

26-Apr-2021

18:43

webengine.dll

4.7.3771.0

19,344

26-Apr-2021

18:43

webengine.dll

4.7.3771.0

17,784

26-Apr-2021

18:43

webengine4.dll

4.7.3771.0

660,368

26-Apr-2021

18:43

webengine4.dll

4.7.3771.0

543,120

26-Apr-2021

18:43

WindowsBase.dll

4.7.3791.0

1,289,080

26-Apr-2021

18:43

WMINet_Utils.dll

4.7.3221.0

188,144

26-Apr-2021

18:43

WMINet_Utils.dll

4.7.3221.0

136,432

26-Apr-2021

18:43

WorkflowServiceHostPerformanceCounters.dll

4.7.3570.0

101,656

26-Apr-2021

18:43

WorkflowServiceHostPerformanceCounters.dll

4.7.3570.0

89,880

26-Apr-2021

18:43

WPFFontCache_v0400.exe.mui

4.7.3791.0

12,152

26-Apr-2021

19:40

WPFFontCache_v0400.exe.mui

4.7.3791.0

12,168

26-Apr-2021

18:43

WPFFontCache_v0400.exe

4.7.3791.0

19,856

26-Apr-2021

19:40

WPFFontCache_v0400.exe

4.7.3791.0

18,848

26-Apr-2021

18:43

wpfgfx_v0400.dll

4.7.3791.0

1,758,592

26-Apr-2021

19:40

wpfgfx_v0400.dll

4.7.3791.0

1,338,752

26-Apr-2021

18:43

Placeholder.dll

4.7.3791.0

18,808

26-Apr-2021

19:40

Placeholder.dll

4.7.3791.0

17,800

26-Apr-2021

18:43

PenIMC2_v0400.dll

4.7.3791.0

97,672

26-Apr-2021

19:40

PenIMC2_v0400.dll

4.7.3791.0

79,240

26-Apr-2021

18:43

Information about protection and security

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