Applies to:

Microsoft .NET Framework 2.0 Microsoft .NET Framework 3.0

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 SP2 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 Server 2008 SP2. 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-2022-26832.

Known issues in this update

Symptom

This update may fail to install on some Windows Server 2008 R2 or Windows Server 2008 operating systems that are hosted in Microsoft Azure with error “Installation failed with error code: (0x80070643), "Fatal error during installation."

Workaround

This issue was corrected by the latest release of this update. Follow the instructions under How to obtain and install the update section to get the updated version. If you've already installed a previous release of this update, no action is required.

Additional information about this update

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

  • 5012327 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 (KB5012327)

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 2.0, 3.0 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 April 9, 2019 servicing stack update (SSU) (KB4493730). 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 October 8, 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 (KB4538484) 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 syncwith WSUS if you configure Products and Classifications as follows:

Product:Windows Server 2008 Service Pack 2

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:

20220412 Security update deployment information: April 12, 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.

Update replacement information

This update replaces previously released updates KB5009714 and KB4570503.

File Information

File hash information

File name

SHA256 hash

Windows6.0-KB5012150-x64.msu

878C823473C9E3FAC53995E7863105055FF84549D10CFE8D970458962ED08678

Windows6.0-KB5012150-x86.msu

656015D77D25D613F3A409B1D53DB7CA0726A56F60A41443E71B4BCE21DDF422

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Aspnet_wp.exe

2.0.50727.8962

46,520

24-Feb-2022

01:17

x64

SPN

AMD64_NETFX-ASP

System.web.regularexpressions.dll

2.0.50727.8962

98,304

24-Feb-2022

01:17

x86

None

Not applicable

Webengine.dll

2.0.50727.8962

750,000

24-Feb-2022

01:17

x64

None

Not applicable

System.web.dll

2.0.50727.8962

5,300,224

24-Feb-2022

01:17

x64

None

Not applicable

System.web.regularexpressions.dll

2.0.50727.8962

98,304

24-Feb-2022

01:15

x86

None

Not applicable

Aspnet_wp.exe

2.0.50727.8962

33,680

24-Feb-2022

01:15

x86

SPN

X86_NETFX-ASP

Webengine.dll

2.0.50727.8962

440,720

24-Feb-2022

01:15

x86

None

Not applicable

System.web.dll

2.0.50727.8962

5,292,032

24-Feb-2022

01:15

x86

None

Not applicable

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

System.web.regularexpressions.dll

2.0.50727.8962

98,304

24-Feb-2022

01:15

x86

None

Not applicable

Aspnet_wp.exe

2.0.50727.8962

33,680

24-Feb-2022

01:15

x86

SPN

X86_NETFX-ASP

Webengine.dll

2.0.50727.8962

440,720

24-Feb-2022

01:15

x86

None

Not applicable

System.web.dll

2.0.50727.8962

5,292,032

24-Feb-2022

01:15

x86

None

Not applicable

Information about protection and security

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