Applies To.NET

Applies to:

Microsoft .NET Framework 4.8

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. 

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.

1 Windows Presentation Foundation (WPF)

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.

  • 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 4.8 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

4.8.4261.0

36,224

08-Oct-2020

17:59

aspnet_wp.exe

4.8.4261.0

39,808

08-Oct-2020

17:59

clr.dll

4.8.4261.0

8,037,752

08-Oct-2020

17:59

clrjit.dll

4.8.4261.0

554,880

08-Oct-2020

17:59

dfdll.dll

4.8.4290.0

178,040

08-Oct-2020

17:59

mscordacwks.dll

4.8.4261.0

1,307,528

08-Oct-2020

17:59

mscordbi.dll

4.8.4261.0

1,188,728

08-Oct-2020

17:59

mscoreei.dll

4.8.4180.0

581,920

08-Oct-2020

17:59

mscorlib.dll

4.8.4261.0

5,670,776

08-Oct-2020

17:59

Placeholder.dll

4.8.4290.0

18,304

08-Oct-2020

17:59

VsVersion.dll

14.8.4290.0

11,656

08-Oct-2020

17:59

PenIMC2_v0400.dll

4.8.4290.0

99,720

08-Oct-2020

17:59

peverify.dll

4.8.4261.0

182,648

08-Oct-2020

17:59

PresentationCore.dll

4.8.4290.0

3,671,944

08-Oct-2020

17:59

PresentationFramework.dll

4.8.4290.0

6,269,832

08-Oct-2020

17:59

PresentationFramework-SystemData.dll

4.8.4290.0

17,800

08-Oct-2020

17:59

PresentationHost_v0400.dll

4.8.4290.0

233,856

08-Oct-2020

17:59

PresentationHost_v0400.dll.mui

4.8.4290.0

77,704

08-Oct-2020

17:59

PresentationNative_v0400.dll

4.8.4290.0

923,016

08-Oct-2020

17:59

ReachFramework.dll

4.8.4110.0

677,656

08-Oct-2020

17:59

ServiceMonikerSupport.dll

4.8.4261.0

24,456

08-Oct-2020

17:59

SMDiagnostics.dll

4.8.4261.0

66,328

08-Oct-2020

17:59

SOS.dll

4.8.4261.0

767,368

08-Oct-2020

17:59

System.Speech.dll

4.8.4210.0

676,736

08-Oct-2020

17:59

System.Activities.dll

4.8.4261.0

1,526,528

08-Oct-2020

17:59

System.Activities.Presentation.dll

4.8.4180.0

2,127,136

08-Oct-2020

17:59

System.Core.dll

4.8.4290.0

1,549,080

08-Oct-2020

17:59

System.IdentityModel.dll

4.8.4261.0

1,086,744

08-Oct-2020

17:59

System.IdentityModel.Services.dll

4.8.4261.0

191,352

08-Oct-2020

17:59

System.Printing.dll

4.8.4110.0

399,640

08-Oct-2020

17:59

System.Runtime.Serialization.dll

4.8.4261.0

1,047,312

08-Oct-2020

17:59

System.ServiceModel.Activities.dll

4.8.4261.0

555,384

08-Oct-2020

17:59

System.ServiceModel.Channels.dll

4.8.4261.0

150,904

08-Oct-2020

17:59

System.ServiceModel.Discovery.dll

4.8.4261.0

301,432

08-Oct-2020

17:59

System.ServiceModel.dll

4.8.4261.0

6,383,896

08-Oct-2020

17:59

System.ServiceModel.Internals.dll

4.8.4261.0

246,528

08-Oct-2020

17:59

System.ServiceModel.WasHosting.dll

4.8.4261.0

33,144

08-Oct-2020

17:59

System.ServiceModel.Web.dll

4.8.4261.0

321,792

08-Oct-2020

17:59

System.Web.ApplicationServices.dll

4.8.4261.0

63,744

08-Oct-2020

17:59

System.Web.Extensions.dll

4.8.4261.0

1,842,432

08-Oct-2020

17:59

System.Windows.Forms.DataVisualization.dll

4.8.4210.0

1,712,512

08-Oct-2020

17:59

System.Workflow.Activities.dll

4.8.4110.0

1,051,112

08-Oct-2020

17:59

System.Workflow.ComponentModel.dll

4.8.4110.0

1,557,272

08-Oct-2020

17:59

System.Workflow.Runtime.dll

4.8.4110.0

503,064

08-Oct-2020

17:59

System.Configuration.dll

4.8.4190.0

421,536

08-Oct-2020

17:59

System.Data.dll

4.8.4290.0

3,476,360

08-Oct-2020

17:59

System.Deployment.dll

4.8.4290.0

1,593,624

08-Oct-2020

17:59

System.dll

4.8.4210.0

3,552,520

08-Oct-2020

17:59

System.Drawing.Design.dll

4.8.4210.0

125,192

08-Oct-2020

17:59

System.Security.dll

4.8.4261.0

320,280

08-Oct-2020

17:59

System.Web.dll

4.8.4261.0

5,409,672

08-Oct-2020

17:59

System.Windows.Controls.Ribbon.dll

4.8.4290.0

743,808

08-Oct-2020

17:59

System.Windows.Forms.dll

4.8.4290.0

5,914,880

08-Oct-2020

17:59

System.Xaml.dll

4.8.4290.0

632,088

08-Oct-2020

17:59

UIAutomationClient.dll

4.8.4290.0

170,880

08-Oct-2020

17:59

UIAutomationClientsideProviders.dll

4.8.4290.0

354,176

08-Oct-2020

17:59

UIAutomationProvider.dll

4.8.4290.0

41,856

08-Oct-2020

17:59

UIAutomationTypes.dll

4.8.4290.0

215,936

08-Oct-2020

17:59

webengine.dll

4.8.4261.0

19,320

08-Oct-2020

17:59

webengine4.dll

4.8.4261.0

564,600

08-Oct-2020

17:59

WindowsBase.dll

4.8.4290.0

1,298,824

08-Oct-2020

17:59

WindowsFormsIntegration.dll

4.8.4180.0

105,248

08-Oct-2020

17:59

WorkflowServiceHostPerformanceCounters.dll

4.8.4110.0

89,368

08-Oct-2020

17:59

WPFFontCache_v0400.exe.mui

4.8.4290.0

12,168

08-Oct-2020

17:59

WPFFontCache_v0400.exe

4.8.4290.0

19,872

08-Oct-2020

17:59

wpfgfx_v0400.dll

4.8.4290.0

1,618,824

08-Oct-2020

17:59

x64

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.8.4261.0

41,848

08-Oct-2020

17:59

Aspnet_perf.dll

4.8.4261.0

36,224

08-Oct-2020

17:59

aspnet_wp.exe

4.8.4261.0

45,440

08-Oct-2020

17:59

aspnet_wp.exe

4.8.4261.0

39,808

08-Oct-2020

17:59

clr.dll

4.8.4261.0

11,245,432

08-Oct-2020

17:59

clr.dll

4.8.4261.0

8,037,752

08-Oct-2020

17:59

clrjit.dll

4.8.4261.0

1,358,200

08-Oct-2020

17:59

clrjit.dll

4.8.4261.0

554,880

08-Oct-2020

17:59

compatjit.dll

4.8.4261.0

1,273,208

08-Oct-2020

17:59

dfdll.dll

4.8.4290.0

214,920

08-Oct-2020

18:13

dfdll.dll

4.8.4290.0

178,040

08-Oct-2020

17:59

mscordacwks.dll

4.8.4261.0

1,801,080

08-Oct-2020

17:59

mscordacwks.dll

4.8.4261.0

1,307,528

08-Oct-2020

17:59

mscordbi.dll

4.8.4261.0

1,655,160

08-Oct-2020

17:59

mscordbi.dll

4.8.4261.0

1,188,728

08-Oct-2020

17:59

mscoreei.dll

4.8.4180.0

689,952

08-Oct-2020

17:59

mscoreei.dll

4.8.4180.0

581,920

08-Oct-2020

17:59

mscorlib.dll

4.8.4261.0

5,431,672

08-Oct-2020

17:59

mscorlib.dll

4.8.4261.0

5,670,776

08-Oct-2020

17:59

VsVersion.dll

14.8.4290.0

11,640

08-Oct-2020

18:13

Placeholder.dll

4.8.4290.0

20,352

08-Oct-2020

18:13

Placeholder.dll

4.8.4290.0

18,304

08-Oct-2020

17:59

VsVersion.dll

14.8.4290.0

11,656

08-Oct-2020

17:59

PenIMC2_v0400.dll

4.8.4290.0

120,712

08-Oct-2020

18:13

PenIMC2_v0400.dll

4.8.4290.0

99,720

08-Oct-2020

17:59

peverify.dll

4.8.4261.0

265,592

08-Oct-2020

17:59

peverify.dll

4.8.4261.0

182,648

08-Oct-2020

17:59

PresentationCore.dll

4.8.4290.0

3,648,384

08-Oct-2020

18:13

PresentationCore.dll

4.8.4290.0

3,671,944

08-Oct-2020

17:59

PresentationFramework.dll

4.8.4290.0

6,269,832

08-Oct-2020

17:59

PresentationFramework-SystemData.dll

4.8.4290.0

17,800

08-Oct-2020

17:59

PresentationHost_v0400.dll

4.8.4290.0

302,472

08-Oct-2020

18:13

PresentationHost_v0400.dll.mui

4.8.4290.0

77,704

08-Oct-2020

18:13

PresentationHost_v0400.dll

4.8.4290.0

233,856

08-Oct-2020

17:59

PresentationHost_v0400.dll.mui

4.8.4290.0

77,704

08-Oct-2020

17:59

PresentationNative_v0400.dll

4.8.4290.0

1,164,168

08-Oct-2020

18:13

PresentationNative_v0400.dll

4.8.4290.0

923,016

08-Oct-2020

17:59

ReachFramework.dll

4.8.4110.0

677,656

08-Oct-2020

17:59

ServiceMonikerSupport.dll

4.8.4261.0

27,512

08-Oct-2020

17:59

ServiceMonikerSupport.dll

4.8.4261.0

24,456

08-Oct-2020

17:59

SMDiagnostics.dll

4.8.4261.0

66,328

08-Oct-2020

17:59

SOS.dll

4.8.4261.0

921,464

08-Oct-2020

17:59

SOS.dll

4.8.4261.0

767,368

08-Oct-2020

17:59

System.Speech.dll

4.8.4210.0

676,736

08-Oct-2020

17:59

System.Activities.dll

4.8.4261.0

1,526,528

08-Oct-2020

17:59

System.Activities.Presentation.dll

4.8.4180.0

2,127,136

08-Oct-2020

17:59

System.Core.dll

4.8.4290.0

1,549,080

08-Oct-2020

17:59

System.IdentityModel.dll

4.8.4261.0

1,086,744

08-Oct-2020

17:59

System.IdentityModel.Services.dll

4.8.4261.0

191,352

08-Oct-2020

17:59

System.Printing.dll

4.8.4110.0

400,152

08-Oct-2020

17:59

System.Printing.dll

4.8.4110.0

399,640

08-Oct-2020

17:59

System.Runtime.Serialization.dll

4.8.4261.0

1,047,312

08-Oct-2020

17:59

System.ServiceModel.Activities.dll

4.8.4261.0

555,384

08-Oct-2020

17:59

System.ServiceModel.Channels.dll

4.8.4261.0

150,904

08-Oct-2020

17:59

System.ServiceModel.Discovery.dll

4.8.4261.0

301,432

08-Oct-2020

17:59

System.ServiceModel.dll

4.8.4261.0

6,383,896

08-Oct-2020

17:59

System.ServiceModel.Internals.dll

4.8.4261.0

246,528

08-Oct-2020

17:59

System.ServiceModel.WasHosting.dll

4.8.4261.0

33,144

08-Oct-2020

17:59

System.ServiceModel.Web.dll

4.8.4261.0

321,792

08-Oct-2020

17:59

System.Web.ApplicationServices.dll

4.8.4261.0

63,744

08-Oct-2020

17:59

System.Web.Extensions.dll

4.8.4261.0

1,842,432

08-Oct-2020

17:59

System.Windows.Forms.DataVisualization.dll

4.8.4210.0

1,712,512

08-Oct-2020

17:59

System.Workflow.Activities.dll

4.8.4110.0

1,051,112

08-Oct-2020

17:59

System.Workflow.ComponentModel.dll

4.8.4110.0

1,557,272

08-Oct-2020

17:59

System.Workflow.Runtime.dll

4.8.4110.0

503,064

08-Oct-2020

17:59

System.configuration.dll

4.8.4190.0

421,536

08-Oct-2020

17:59

System.Data.dll

4.8.4290.0

3,543,432

08-Oct-2020

18:13

System.Data.dll

4.8.4290.0

3,476,360

08-Oct-2020

17:59

System.Deployment.dll

4.8.4290.0

1,593,624

08-Oct-2020

17:59

System.dll

4.8.4210.0

3,552,520

08-Oct-2020

17:59

System.Drawing.Design.dll

4.8.4210.0

125,192

08-Oct-2020

17:59

System.Security.dll

4.8.4261.0

320,280

08-Oct-2020

17:59

System.Web.dll

4.8.4261.0

5,397,368

08-Oct-2020

17:59

System.Web.dll

4.8.4261.0

5,409,672

08-Oct-2020

17:59

System.Windows.Controls.Ribbon.dll

4.8.4290.0

743,808

08-Oct-2020

17:59

System.Windows.Forms.dll

4.8.4290.0

5,914,880

08-Oct-2020

17:59

System.Xaml.dll

4.8.4290.0

632,088

08-Oct-2020

17:59

UIAutomationClient.dll

4.8.4290.0

170,880

08-Oct-2020

17:59

UIAutomationClientsideProviders.dll

4.8.4290.0

354,176

08-Oct-2020

17:59

UIAutomationProvider.dll

4.8.4290.0

41,856

08-Oct-2020

17:59

UIAutomationTypes.dll

4.8.4290.0

215,936

08-Oct-2020

17:59

webengine.dll

4.8.4261.0

21,368

08-Oct-2020

17:59

webengine.dll

4.8.4261.0

19,320

08-Oct-2020

17:59

webengine4.dll

4.8.4261.0

675,192

08-Oct-2020

17:59

webengine4.dll

4.8.4261.0

564,600

08-Oct-2020

17:59

WindowsBase.dll

4.8.4290.0

1,298,824

08-Oct-2020

17:59

WindowsFormsIntegration.dll

4.8.4180.0

105,248

08-Oct-2020

17:59

WorkflowServiceHostPerformanceCounters.dll

4.8.4110.0

102,672

08-Oct-2020

17:59

WorkflowServiceHostPerformanceCounters.dll

4.8.4110.0

89,368

08-Oct-2020

17:59

WPFFontCache_v0400.exe.mui

4.8.4290.0

12,168

08-Oct-2020

18:13

WPFFontCache_v0400.exe.mui

4.8.4290.0

12,168

08-Oct-2020

17:59

WPFFontCache_v0400.exe

4.8.4290.0

21,920

08-Oct-2020

18:13

WPFFontCache_v0400.exe

4.8.4290.0

19,872

08-Oct-2020

17:59

wpfgfx_v0400.dll

4.8.4290.0

2,050,440

08-Oct-2020

18:13

wpfgfx_v0400.dll

4.8.4290.0

1,618,824

08-Oct-2020

17:59

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