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Applies to:

Microsoft .NET Framework 3.5

Note: Revised on Jun 20, 2023 to add resolution to known issue.

REMINDER

  • As a reminder to advanced IT administrators, updates to .NET Framework 3.5 for Windows 8.1 and Windows Server 2012 R2 should only be applied on systems where .NET Framework 3.5 is present and enabled. Customers who attempt to pre-install updates to .NET Framework 3.5 to offline images that do not contain the .NET Framework 3.5 product enabled will expose these systems to failures to enable .NET Framework 3.5 after the systems are online. For more extensive information about deploying .NET Framework 3.5, see Microsoft .NET Framework 3.5 Deployment Considerations.

  • All updates for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2 require that update KB 2919355 is installed. We recommend that you install update KB 2919355 on your Windows 8.1-based, Windows RT 8.1-based, or Windows Server 2012 R2-based computer so that you receive updates in the future.

  • 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.

The December 13, 2022 update for Windows 8.1 and Windows Server 2012 R2 includes cumulative reliability improvements in .NET Framework 3.5. We recommend that you apply this update as part of your regular maintenance routines. Verify that you have installed the required updates listed in the How to get this update section before installing this update.

Summary

This security update addresses a vulnerability where restricted mode is triggered for the parsing of XPS files, preventing gadget chains which could allow remote code execution on an affected system. For more information please see CVE-2022-41089.

Additional information about this update

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

  • 5021081 Description of the Security Only Update for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1 and Windows Server 2012 R2 (KB5021081)

Known issues in this update

Symptom

After installing this update, WPF apps may have a change in behavior. For more information about this issue, see KB5022083

Workaround

To mitigate this issue, see KB5022083.

Resolution

This issue has been resolved in the June 13, 2023 Security and Quality Rollup and Cumulative Update.

If you used any workaround or mitigations for this issue, they are no longer needed, and we recommend you remove them. To remove workaround review the workaround or alternative workaround which was applied for instructions. The workaround should be removed prior to installing the June update.

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 3.5 installed.

Install this update

Release Channel

Available

Next Step

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 individual .NET Framework product update will be installed, as applicable, by applying the operating system update. For more information about operating system updates see additional information about this update section.

Restart requirement

You may need to 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:

20221213 Security update deployment information: December 13, 2022

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

File hash information

File name

SHA256 hash

Windows8.1-KB5020897-x64.msu

721BF235718F895B8E34E6AC16F25E4A46E8509DE63E69062BA4ADEEF9AF051E

Windows8.1-KB5020897-x86.msu

54FFB81FD62F46E79C239DF1144A9953BC830D6DF22DD4CD2B97958BD20D3E73

File name

File version

File size

Date

Time

Platform

Presentationcore.dll

3.0.6920.8953

4,006,400

30-Oct-2022

19:52

x64

Presentationfontcache.exe.config

Not applicable

161

25-Oct-2022

00:22

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8953

2,259,360

30-Oct-2022

19:52

x64

System.printing.dll

3.0.6920.8953

358,400

30-Oct-2022

19:52

x64

Penimc.dll

3.0.6920.8953

88,976

30-Oct-2022

19:52

x64

Presentationframework.dll

3.0.6920.8953

4,648,960

30-Oct-2022

19:52

x86

Presentationhostdll.dll

3.0.6920.8953

175,512

30-Oct-2022

19:52

x64

Reachframework.dll

3.0.6920.8953

536,576

30-Oct-2022

19:52

x86

Windowsbase.dll

3.0.6920.8953

1,118,208

30-Oct-2022

19:52

x86

Presentationframework.dll

3.0.6920.8953

5,292,032

30-Oct-2022

08:09

x86

Reachframework.dll

3.0.6920.8953

536,576

30-Oct-2022

08:09

x86

Windowsbase.dll

3.0.6920.8953

1,257,472

30-Oct-2022

08:09

x86

Presentationcore.dll

3.0.6920.8953

4,222,976

30-Oct-2022

08:09

x86

Presentationfontcache.exe.config

Not applicable

161

28-Oct-2022

16:51

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8953

1,741,200

30-Oct-2022

08:09

x86

System.printing.dll

3.0.6920.8953

372,736

30-Oct-2022

08:09

x86

Penimc.dll

3.0.6920.8953

72,096

30-Oct-2022

08:09

x86

Presentationframework.dll

3.0.6920.8953

5,292,032

30-Oct-2022

08:09

x86

Presentationhostdll.dll

3.0.6920.8953

134,544

30-Oct-2022

08:09

x86

Reachframework.dll

3.0.6920.8953

536,576

30-Oct-2022

08:09

x86

Windowsbase.dll

3.0.6920.8953

1,257,472

30-Oct-2022

08:09

x86

File name

File version

File size

Date

Time

Platform

Presentationframework.dll

3.0.6920.8953

5,292,032

30-Oct-2022

08:09

x86

Reachframework.dll

3.0.6920.8953

536,576

30-Oct-2022

08:09

x86

Windowsbase.dll

3.0.6920.8953

1,257,472

30-Oct-2022

08:09

x86

Presentationcore.dll

3.0.6920.8953

4,222,976

30-Oct-2022

08:09

x86

Presentationfontcache.exe.config

Not applicable

161

28-Oct-2022

16:51

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8953

1,741,200

30-Oct-2022

08:09

x86

System.printing.dll

3.0.6920.8953

372,736

30-Oct-2022

08:09

x86

Penimc.dll

3.0.6920.8953

72,096

30-Oct-2022

08:09

x86

Presentationframework.dll

3.0.6920.8953

5,292,032

30-Oct-2022

08:09

x86

Presentationhostdll.dll

3.0.6920.8953

134,544

30-Oct-2022

08:09

x86

Reachframework.dll

3.0.6920.8953

536,576

30-Oct-2022

08:09

x86

Windowsbase.dll

3.0.6920.8953

1,257,472

30-Oct-2022

08:09

x86

Prerequisites

To apply this update, you must have .NET Framework 3.5 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.

How to obtain help and support for this update

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