April 12, 2022—KB5012666 (Security-only update)
Applies To
Windows Server 2012 Windows Embedded 8 StandardRelease Date:
12/04/2022
Version:
Security-only update
Summary
Learn more about this security update, including improvements and fixes, any known issues, and how to get the update.
IMPORTANT Windows Server 2012 has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional releases (known as "C" or "D" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the "B" or Update Tuesday release).
Verify that you have installed the required updates listed in the How to get this update section before installing this update.
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 Server 2012 update history home page.
Improvements and fixes
This security update includes quality improvements. Key changes include:
-
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 that occurs when you try to write a service principal name (SPN) alias (such as www/contoso) and HOST/NAME already exists on another object. If the user has the RIGHT_DS_WRITE_PROPERTY on the SPN attribute of the colliding object, you receive an “Access Denied” error.
-
Addresses an issue in which domain joins may fail in environments that use disjoint DNS hostnames.
For more information about the resolved security vulnerabilities, please refer to the new 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:
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:
|
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 installing 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 (KB5011571) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.
REMINDER If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer (KB5011486).
Install this update
|
Release Channel |
Available |
Next Step |
|
Windows Update and Microsoft Update |
No |
See the other options below. |
|
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 Server 2012, Windows Embedded 8 Standard Classification: Security Update |
File information
For a list of the files that are provided in this update, download the file information for update 5012666.
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