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

Note On Jan 12, 2020, a live revision was made to this update to remove its supersedence relationship with the October 13, 2020, .NET Framework security updates. If you have already installed this update, the October 13 .NET Framework updates, or any later .NET Framework updates, you do not have to take any action to be up-to-date for the latest .NET Framework security updates. See the “Update replacement information” section in this article for more information for WSUS administrators.

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

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

WPF1

- Addressed a regression from a previous update, arising when two HostVisual elements disconnect at the same time.

SQL

- Addressed an issue in System.Data.SqlClient where querying string columns would fail if the database had a Kazakh collation.

Known issues in this update

Symptom

This update does not install, and it returns either or both of the following error messages:

  • -2146762495

  • A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.

Workaround

This issue has been corrected in the latest Security and Quality Rollup for .NET Framework. 

Additional information about this update

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

  • 4586086 Description of the Security and Quality Rollup for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008 SP2 (KB4586086)

  • 4586083 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 (KB4586083)

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 August 11, 2020 SSU (KB4570673) or a later SSU. To get the standalone package for this SSU, search for it in the Microsoft Update Catalog.

    Important For Windows Thin PC, you must have the August 11, 2020 SSU (KB4570673) or a later SSU installed to make sure you continue to get the extended security updates starting with the October 13, 2020 updates.

  4. 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: Security Updates

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:

20201110 Security update deployment information: November 10, 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.

Update replacement information

This update previously replaced update KB 4579977. Following a live revision on January 12, 2012, this update does no longer replace previously released updates.

WSUS administrators who cannot install this update and have to reinstate the October 13, 2020, KB 4579977 security update, if it was declined, can follow this guidance: Reinstating declined updates. Then, they should run an update synchronization within their Microsoft Endpoint Configuration Manager, or update management environments, as applicable.

File information

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

x86

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.7.3701.0

35,704

30-Sep-2020

19:39

aspnet_wp.exe

4.7.3701.0

39,296

30-Sep-2020

19:39

clr.dll

4.7.3701.0

7,247,736

30-Sep-2020

19:39

clrjit.dll

4.7.3701.0

515,960

30-Sep-2020

19:39

dfdll.dll

4.7.3221.0

159,952

30-Sep-2020

19:39

GlobalUserInterface.CompositeFont

186,009

30-Sep-2020

19:39

mscordacwks.dll

4.7.3701.0

1,336,184

30-Sep-2020

19:39

mscordbi.dll

4.7.3701.0

1,162,104

30-Sep-2020

19:39

mscoreei.dll

4.7.3468.0

512,488

30-Sep-2020

19:39

mscorlib.dll

4.7.3701.0

5,638,520

30-Sep-2020

19:39

msvcp120_clr0400.dll

12.0.52519.0

485,576

30-Sep-2020

19:43

msvcr120_clr0400.dll

12.0.52519.0

987,840

30-Sep-2020

19:43

VsVersion.dll

14.7.3730.0

12,168

30-Sep-2020

19:43

peverify.dll

4.7.3701.0

181,624

30-Sep-2020

19:39

PresentationCore.dll

4.7.3730.0

3,632,512

30-Sep-2020

19:43

PresentationFramework.dll

4.7.3730.0

6,243,200

30-Sep-2020

19:39

PresentationFramework-SystemData.dll

4.7.3730.0

17,280

30-Sep-2020

19:39

PresentationHost_v0400.dll

4.7.3730.0

207,240

30-Sep-2020

19:43

PresentationHost_v0400.dll.mui

4.7.3730.0

77,696

30-Sep-2020

19:43

PresentationNative_v0400.dll

4.7.3730.0

820,096

30-Sep-2020

19:43

ReachFramework.dll

4.7.3570.0

677,656

30-Sep-2020

19:39

ServiceMonikerSupport.dll

4.7.3620.0

30,192

30-Sep-2020

19:39

SMDiagnostics.dll

4.7.3620.0

74,840

30-Sep-2020

19:39

SMSvcHost.exe

4.7.3515.0

139,264

30-Sep-2020

19:39

SOS.dll

4.7.3701.0

736,632

30-Sep-2020

19:39

System.Speech.dll

4.7.3650.0

675,720

30-Sep-2020

19:39

System.Activities.dll

4.7.3620.0

1,534,008

30-Sep-2020

19:39

System.ComponentModel.DataAnnotations.dll

4.7.3221.0

127,400

30-Sep-2020

19:39

System.Core.dll

4.7.3730.0

1,544,984

30-Sep-2020

19:39

System.Data.Entity.dll

4.7.3221.0

4,035,664

30-Sep-2020

19:39

System.DirectoryServices.AccountManagement.dll

4.7.3221.0

297,648

30-Sep-2020

19:39

System.IdentityModel.dll

4.7.3620.0

1,095,736

30-Sep-2020

19:39

System.IdentityModel.Services.dll

4.7.3620.0

199,160

30-Sep-2020

19:39

System.Printing.dll

4.7.3570.0

374,032

30-Sep-2020

19:39

System.Runtime.Serialization.dll

4.7.3620.0

1,057,336

30-Sep-2020

19:39

System.ServiceModel.Channels.dll

4.7.3620.0

158,704

30-Sep-2020

19:39

System.ServiceModel.Discovery.dll

4.7.3620.0

309,232

30-Sep-2020

19:39

System.ServiceModel.dll

4.7.3620.0

6,324,792

30-Sep-2020

19:39

System.ServiceModel.Internals.dll

4.7.3620.0

261,688

30-Sep-2020

19:39

System.ServiceModel.Routing.dll

4.7.3221.0

132,208

30-Sep-2020

19:39

System.ServiceModel.WasHosting.dll

4.7.3620.0

40,944

30-Sep-2020

19:39

System.Web.ApplicationServices.dll

4.7.3701.0

63,744

30-Sep-2020

19:39

System.Web.Extensions.dll

4.7.3701.0

1,842,936

30-Sep-2020

19:39

System.Workflow.Activities.dll

4.7.3570.0

1,052,136

30-Sep-2020

19:39

System.Workflow.ComponentModel.dll

4.7.3570.0

1,553,896

30-Sep-2020

19:39

System.Workflow.Runtime.dll

4.7.3570.0

499,480

30-Sep-2020

19:39

System.Runtime.Caching.dll

4.7.3221.0

109,864

30-Sep-2020

19:39

System.Configuration.dll

4.7.3630.0

420,512

30-Sep-2020

19:39

System.Data.dll

4.7.3730.0

3,464,568

30-Sep-2020

19:43

System.Data.SqlXml.dll

4.7.3221.0

734,520

30-Sep-2020

19:39

System.Deployment.dll

4.7.3221.0

879,408

30-Sep-2020

19:39

System.DirectoryServices.Protocols.dll

4.7.3221.0

201,624

30-Sep-2020

19:39

System.dll

4.7.3650.0

3,556,616

30-Sep-2020

19:39

System.Drawing.dll

4.7.3221.0

600,864

30-Sep-2020

19:39

System.Management.dll

4.7.3221.0

415,536

30-Sep-2020

19:39

System.Net.Http.dll

4.7.3221.0

204,584

30-Sep-2020

19:39

System.Runtime.Remoting.dll

4.7.3221.0

347,472

30-Sep-2020

19:39

System.Security.dll

4.7.3701.0

318,712

30-Sep-2020

19:39

System.Transactions.dll

4.7.3221.0

309,328

30-Sep-2020

19:39

System.Web.dll

4.7.3701.0

5,409,672

30-Sep-2020

19:39

System.Windows.Controls.Ribbon.dll

4.7.3730.0

739,200

30-Sep-2020

19:39

System.Windows.Forms.dll

4.7.3701.0

5,234,432

30-Sep-2020

19:39

System.Xaml.dll

4.7.3730.0

635,152

30-Sep-2020

19:39

System.Xml.dll

4.7.3221.0

2,670,344

30-Sep-2020

19:39

UIAutomationClient.dll

4.7.3730.0

170,888

30-Sep-2020

19:39

UIAutomationClientsideProviders.dll

4.7.3730.0

354,184

30-Sep-2020

19:39

UIAutomationProvider.dll

4.7.3730.0

41,864

30-Sep-2020

19:39

UIAutomationTypes.dll

4.7.3730.0

213,896

30-Sep-2020

19:39

webengine.dll

4.7.3701.0

17,784

30-Sep-2020

19:39

webengine4.dll

4.7.3701.0

543,096

30-Sep-2020

19:39

WindowsBase.dll

4.7.3730.0

1,289,096

30-Sep-2020

19:39

WMINet_Utils.dll

4.7.3221.0

136,432

30-Sep-2020

19:39

WorkflowServiceHostPerformanceCounters.dll

4.7.3570.0

89,880

30-Sep-2020

19:39

WPFFontCache_v0400.exe.mui

4.7.3730.0

12,160

30-Sep-2020

19:48

WPFFontCache_v0400.exe

4.7.3730.0

18,848

30-Sep-2020

19:48

wpfgfx_v0400.dll

4.7.3730.0

1,338,760

30-Sep-2020

19:43

Placeholder.dll

4.7.3730.0

17,800

30-Sep-2020

19:43

PenIMC2_v0400.dll

4.7.3730.0

79,240

30-Sep-2020

19:43

x64

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.7.3701.0

39,288

30-Sep-2020

19:39

Aspnet_perf.dll

4.7.3701.0

35,704

30-Sep-2020

19:39

aspnet_wp.exe

4.7.3701.0

43,904

30-Sep-2020

19:39

aspnet_wp.exe

4.7.3701.0

39,296

30-Sep-2020

19:39

clr.dll

4.7.3701.0

10,368,888

30-Sep-2020

19:39

clr.dll

4.7.3701.0

7,247,736

30-Sep-2020

19:39

clrjit.dll

4.7.3701.0

1,214,328

30-Sep-2020

19:39

clrjit.dll

4.7.3701.0

515,960

30-Sep-2020

19:39

compatjit.dll

4.7.3701.0

1,252,728

30-Sep-2020

19:39

dfdll.dll

4.7.3221.0

191,696

30-Sep-2020

19:39

dfdll.dll

4.7.3221.0

159,952

30-Sep-2020

19:39

GlobalUserInterface.CompositeFont

186,009

30-Sep-2020

19:39

mscordacwks.dll

4.7.3701.0

1,833,848

30-Sep-2020

19:39

mscordacwks.dll

4.7.3701.0

1,336,184

30-Sep-2020

19:39

mscordbi.dll

4.7.3701.0

1,615,224

30-Sep-2020

19:39

mscordbi.dll

4.7.3701.0

1,162,104

30-Sep-2020

19:39

mscoreei.dll

4.7.3468.0

631,272

30-Sep-2020

19:39

mscoreei.dll

4.7.3468.0

512,488

30-Sep-2020

19:39

mscorlib.dll

4.7.3701.0

5,420,408

30-Sep-2020

19:39

mscorlib.dll

4.7.3701.0

5,638,520

30-Sep-2020

19:39

msvcp120_clr0400.dll

12.0.52519.0

690,008

30-Sep-2020

19:39

msvcp120_clr0400.dll

12.0.52519.0

485,576

30-Sep-2020

19:43

msvcr120_clr0400.dll

12.0.52519.0

993,632

30-Sep-2020

19:39

msvcr120_clr0400.dll

12.0.52519.0

987,840

30-Sep-2020

19:43

VsVersion.dll

14.7.3730.0

12,160

30-Sep-2020

19:39

VsVersion.dll

14.7.3730.0

12,168

30-Sep-2020

19:43

peverify.dll

4.7.3701.0

253,816

30-Sep-2020

19:39

peverify.dll

4.7.3701.0

181,624

30-Sep-2020

19:39

PresentationCore.dll

4.7.3730.0

3,610,504

30-Sep-2020

19:39

PresentationCore.dll

4.7.3730.0

3,632,512

30-Sep-2020

19:43

PresentationFramework.dll

4.7.3730.0

6,243,200

30-Sep-2020

19:39

PresentationFramework-SystemData.dll

4.7.3730.0

17,280

30-Sep-2020

19:39

PresentationHost_v0400.dll

4.7.3730.0

270,728

30-Sep-2020

19:39

PresentationHost_v0400.dll.mui

4.7.3730.0

77,704

30-Sep-2020

19:39

PresentationHost_v0400.dll

4.7.3730.0

207,240

30-Sep-2020

19:43

PresentationHost_v0400.dll.mui

4.7.3730.0

77,696

30-Sep-2020

19:43

PresentationNative_v0400.dll

4.7.3730.0

1,102,728

30-Sep-2020

19:39

PresentationNative_v0400.dll

4.7.3730.0

820,096

30-Sep-2020

19:43

ReachFramework.dll

4.7.3570.0

677,656

30-Sep-2020

19:39

ServiceMonikerSupport.dll

4.7.3620.0

32,240

30-Sep-2020

19:39

ServiceMonikerSupport.dll

4.7.3620.0

30,192

30-Sep-2020

19:39

SMDiagnostics.dll

4.7.3620.0

74,840

30-Sep-2020

19:39

SMSvcHost.exe

4.7.3515.0

139,264

30-Sep-2020

19:39

SOS.dll

4.7.3701.0

865,144

30-Sep-2020

19:39

SOS.dll

4.7.3701.0

736,632

30-Sep-2020

19:39

System.Speech.dll

4.7.3650.0

675,720

30-Sep-2020

19:39

System.Activities.dll

4.7.3620.0

1,534,008

30-Sep-2020

19:39

System.ComponentModel.DataAnnotations.dll

4.7.3221.0

127,400

30-Sep-2020

19:39

System.Core.dll

4.7.3730.0

1,544,984

30-Sep-2020

19:39

System.Data.Entity.dll

4.7.3221.0

4,035,664

30-Sep-2020

19:39

System.DirectoryServices.AccountManagement.dll

4.7.3221.0

297,648

30-Sep-2020

19:39

System.IdentityModel.dll

4.7.3620.0

1,095,736

30-Sep-2020

19:39

System.IdentityModel.Services.dll

4.7.3620.0

199,160

30-Sep-2020

19:39

System.Printing.dll

4.7.3570.0

374,552

30-Sep-2020

19:39

System.Printing.dll

4.7.3570.0

374,032

30-Sep-2020

19:39

System.Runtime.Serialization.dll

4.7.3620.0

1,057,336

30-Sep-2020

19:39

System.ServiceModel.Channels.dll

4.7.3620.0

158,704

30-Sep-2020

19:39

System.ServiceModel.Discovery.dll

4.7.3620.0

309,232

30-Sep-2020

19:39

System.ServiceModel.dll

4.7.3620.0

6,324,792

30-Sep-2020

19:39

System.ServiceModel.Internals.dll

4.7.3620.0

261,688

30-Sep-2020

19:39

System.ServiceModel.Routing.dll

4.7.3221.0

132,208

30-Sep-2020

19:39

System.ServiceModel.WasHosting.dll

4.7.3620.0

40,944

30-Sep-2020

19:39

System.Web.ApplicationServices.dll

4.7.3701.0

63,744

30-Sep-2020

19:39

System.Web.Extensions.dll

4.7.3701.0

1,842,936

30-Sep-2020

19:39

System.Workflow.Activities.dll

4.7.3570.0

1,052,136

30-Sep-2020

19:39

System.Workflow.ComponentModel.dll

4.7.3570.0

1,553,896

30-Sep-2020

19:39

System.Workflow.Runtime.dll

4.7.3570.0

499,480

30-Sep-2020

19:39

System.Runtime.Caching.dll

4.7.3221.0

109,864

30-Sep-2020

19:39

System.configuration.dll

4.7.3630.0

420,512

30-Sep-2020

19:39

System.Data.dll

4.7.3730.0

3,526,536

30-Sep-2020

19:39

System.Data.dll

4.7.3730.0

3,464,568

30-Sep-2020

19:43

System.Data.SqlXml.dll

4.7.3221.0

734,520

30-Sep-2020

19:39

System.Deployment.dll

4.7.3221.0

879,408

30-Sep-2020

19:39

System.DirectoryServices.Protocols.dll

4.7.3221.0

201,624

30-Sep-2020

19:39

System.dll

4.7.3650.0

3,556,616

30-Sep-2020

19:39

System.Drawing.dll

4.7.3221.0

600,864

30-Sep-2020

19:39

System.Management.dll

4.7.3221.0

415,536

30-Sep-2020

19:39

System.Net.Http.dll

4.7.3221.0

204,584

30-Sep-2020

19:39

System.Runtime.Remoting.dll

4.7.3221.0

347,472

30-Sep-2020

19:39

System.Security.dll

4.7.3701.0

318,712

30-Sep-2020

19:39

System.Transactions.dll

4.7.3221.0

311,048

30-Sep-2020

19:39

System.Transactions.dll

4.7.3221.0

309,328

30-Sep-2020

19:39

System.Web.dll

4.7.3701.0

5,393,272

30-Sep-2020

19:39

System.Web.dll

4.7.3701.0

5,409,672

30-Sep-2020

19:39

System.Windows.Controls.Ribbon.dll

4.7.3730.0

739,200

30-Sep-2020

19:39

System.Windows.Forms.dll

4.7.3701.0

5,234,432

30-Sep-2020

19:39

System.Xaml.dll

4.7.3730.0

635,152

30-Sep-2020

19:39

System.XML.dll

4.7.3221.0

2,670,344

30-Sep-2020

19:39

UIAutomationClient.dll

4.7.3730.0

170,888

30-Sep-2020

19:39

UIAutomationClientsideProviders.dll

4.7.3730.0

354,184

30-Sep-2020

19:39

UIAutomationProvider.dll

4.7.3730.0

41,864

30-Sep-2020

19:39

UIAutomationTypes.dll

4.7.3730.0

213,896

30-Sep-2020

19:39

webengine.dll

4.7.3701.0

19,320

30-Sep-2020

19:39

webengine.dll

4.7.3701.0

17,784

30-Sep-2020

19:39

webengine4.dll

4.7.3701.0

660,344

30-Sep-2020

19:39

webengine4.dll

4.7.3701.0

543,096

30-Sep-2020

19:39

WindowsBase.dll

4.7.3730.0

1,289,096

30-Sep-2020

19:39

WMINet_Utils.dll

4.7.3221.0

188,144

30-Sep-2020

19:39

WMINet_Utils.dll

4.7.3221.0

136,432

30-Sep-2020

19:39

WorkflowServiceHostPerformanceCounters.dll

4.7.3570.0

101,656

30-Sep-2020

19:39

WorkflowServiceHostPerformanceCounters.dll

4.7.3570.0

89,880

30-Sep-2020

19:39

WPFFontCache_v0400.exe.mui

4.7.3730.0

12,168

30-Sep-2020

19:58

WPFFontCache_v0400.exe.mui

4.7.3730.0

12,160

30-Sep-2020

19:48

WPFFontCache_v0400.exe

4.7.3730.0

19,864

30-Sep-2020

19:58

WPFFontCache_v0400.exe

4.7.3730.0

18,848

30-Sep-2020

19:48

wpfgfx_v0400.dll

4.7.3730.0

1,758,600

30-Sep-2020

19:39

wpfgfx_v0400.dll

4.7.3730.0

1,338,760

30-Sep-2020

19:43

Placeholder.dll

4.7.3730.0

18,824

30-Sep-2020

19:39

Placeholder.dll

4.7.3730.0

17,800

30-Sep-2020

19:43

PenIMC2_v0400.dll

4.7.3730.0

97,664

30-Sep-2020

19:39

PenIMC2_v0400.dll

4.7.3730.0

79,240

30-Sep-2020

19:43

Information about protection and security

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Any additional feedback? (Optional)

Thank you for your feedback!

×