Table of contents
×

Release Date:

4/12/2022

Version:

Monthly Rollup

Summary

Learn more about this security update, including improvements and fixes, any known issues, and how to get the update.

IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as "C" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the "B" or Update Tuesday release).

For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article. To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history home page.

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB5011564 (released March 8, 2022) and addresses the following issues:

  • Addresses an issue in Windows Media Center where some users might have to reconfigure the application on each start. 

  • Addresses a memory leak that was introduced by the PacRequestorEnforcement registry key in the November 2021 Cumulative Update that causes a decrease in performance on domain controllers.

  • Addresses an issue in which Event ID 37 might be logged during certain password change scenarios.

  • Addresses an issue in which Windows might go into BitLocker recovery after a servicing update.

  • Addresses an issue in which domain joins may fail in environments that use disjoint DNS hostnames.

  • Addresses an issue that causes a Denial of Service vulnerability on Cluster Shared Volumes (CSV). For more information, see CVE-2020-26784.

  • Addresses an issue that prevents you from changing a password that has expired when you sign in to a Windows device.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide website and the April 2022 Security Updates.

Known issues in this update

Symptom

Workaround

Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.

Do one of the following:

  • Perform the operation from a process that has administrator privilege.

  • Perform the operation from a node that doesn’t have CSV ownership.

Microsoft is working on a resolution and will provide an update in an upcoming release.

After installing updates released January 11, 2022 or later updates, apps using Microsoft .NET Framework to acquire or set Active Directory Forest Trust Information might fail, close, or you might receive an error from the app or Windows. You might also receive an access violation (0xc0000005) error.

Note for developers: Affected apps use the System.DirectoryServices API.

To resolve this issue manually, apply the out-of-band updates for the version of .NET Framework used by the app.

Note These out-of-band updates are not available from Windows Update and will not install automatically. To get the standalone package, search for the KB number for your version of Windows and .NET Framework in the Microsoft Update Catalog.

You can manually import these updates into Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager. For WSUS instructions, see WSUS and the Catalog Site. For Configuration Manger instructions, see Import updates from the Microsoft Update Catalog.

For instructions on how to install this update for your operating system, see the KB articles listed below:

  • Windows Server 2022: 

  • Windows Server 2019: 

  • Windows Server 2016: 

  • Windows Server 2012 R2: 

  • Windows Server 2012:

How to get this update

Before installing this update

We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before you install the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

If you use Windows Update, the latest SSU (KB5012672) will be offered to you automatically. To get the standalone package for the latest SSU, 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.

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 8.1, Windows Server 2012 R2, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro

Classification: Security Updates

File information

For a list of the files that are provided in this update, download the file information for update 5012670

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!

×