Applies to:

Microsoft .NET Framework 4.5.2

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.

Summary

This security update addresses an issue where an unauthenticated attacker could cause a denial of service on an affected system. For more information please see CVE-2022-21911.

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.

  • 5009714 Description of the Security Only Update for .NET Framework 2.0, 3.0, 4.5.2, 4.6 and 4.6.2 for Windows Server 2008 SP2 (KB5009714)

  • 5009711 Description of the Security Only Update 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 (KB5009711)

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.5.2 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

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, Windows Server 2008 SP2

Classification: Security Updates

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:

20220111 Security update deployment information: January 11, 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

x86

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.0.30319.36720

34,704

02-Dec-2021

21:45

aspnet_wp.exe

4.0.30319.36720

36,248

02-Dec-2021

21:45

System.Web.ApplicationServices.dll

4.0.30319.36720

64,304

02-Dec-2021

21:45

System.Web.Extensions.dll

4.0.30319.36720

1,852,720

02-Dec-2021

21:45

System.Web.dll

4.0.30319.36720

5,457,808

02-Dec-2021

21:45

webengine.dll

4.0.30319.36720

17,784

02-Dec-2021

21:45

webengine4.dll

4.0.30319.36720

502,672

02-Dec-2021

21:45

msvcp120_clr0400.dll

12.0.52480.36480

536,856

02-Dec-2021

21:40

msvcr120_clr0400.dll

12.0.52480.36480

875,800

02-Dec-2021

21:40

x64

File name

File version

File size

Date

Time

Aspnet_perf.dll

4.0.30319.36720

38,280

02-Dec-2021

22:02

Aspnet_perf.dll

4.0.30319.36720

34,704

02-Dec-2021

21:45

aspnet_wp.exe

4.0.30319.36720

40,832

02-Dec-2021

22:02

aspnet_wp.exe

4.0.30319.36720

36,248

02-Dec-2021

21:45

System.Web.ApplicationServices.dll

4.0.30319.36720

64,304

02-Dec-2021

21:45

System.Web.Extensions.dll

4.0.30319.36720

1,852,720

02-Dec-2021

21:45

System.Web.dll

4.0.30319.36720

5,451,640

02-Dec-2021

22:02

System.Web.dll

4.0.30319.36720

5,457,808

02-Dec-2021

21:45

webengine.dll

4.0.30319.36720

19,856

02-Dec-2021

22:02

webengine.dll

4.0.30319.36720

17,784

02-Dec-2021

21:45

webengine4.dll

4.0.30319.36720

614,288

02-Dec-2021

22:02

webengine4.dll

4.0.30319.36720

502,672

02-Dec-2021

21:45

msvcp120_clr0400.dll

12.0.52480.36480

678,488

02-Dec-2021

21:42

msvcp120_clr0400.dll

12.0.52480.36480

536,856

02-Dec-2021

21:40

msvcr120_clr0400.dll

12.0.52480.36480

869,464

02-Dec-2021

21:42

msvcr120_clr0400.dll

12.0.52480.36480

875,800

02-Dec-2021

21:40

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?

Thank you for your feedback!

×