April 12, 2022—KB5012599 (OS Builds 19042.1645, 19043.1645, and 19044.1645)
Applies To
Windows 10, version 20H2, all editions Windows Server, version 20H2, all editions Windows 10, version 21H1, all editions Windows 10, version 21H2, all editionsRelease Date:
4/12/2022
Version:
OS Builds 19042.1645, 19043.1645, and 19044.1645
EXPIRATION NOTICE
IMPORTANT As of 9/12/2023, this KB is only available from Windows Update. It is no longer available from the Microsoft Update Catalog or other release channels. We recommend that you update your devices to the latest security quality update.
3/15/22 IMPORTANT Windows 10, version 20H2 will reach end of service on May 10, 2022 for devices running the Home, Pro, Pro Education, and Pro for Workstations editions. After May 10, 2022, these devices will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10 or Windows 11.
We will continue to service the following editions: Enterprise, IoT Enterprise, Windows on Surface Hub, and Windows Server, version 20H2.
UPDATED 01/11/22 REMINDER Windows 10, version 2004 reached end of servicing on December 14, 2021. To continue receiving security and quality updates, Microsoft recommends that you update to the latest version of Windows 10.
To update to one of the newer versions of Windows 10, we recommend that you use the appropriate Enablement Package KB (EKB). Using the EKB makes updating faster and easier and requires a single restart. To find the EKB for a specific OS, go to the Improvements section and click or tap the OS name to expand the collapsible section.
11/17/20
For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 10, version 20H2, see its update history page.
Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.
Highlights
-
Updates security for your Windows operating system.
Improvements
Note To view the list of addressed issues, click or tap the OS name to expand the collapsible section.
Important: Use EKB KB5003791 to update to Windows 10, version 21H2.
This security update includes quality improvements. Key changes include:
-
This build includes all the improvements from Windows 10, version 20H2.
-
No additional issues were documented for this release.
Important: Use EKB KB5000736 to update to Windows 10, version 21H1.
This security update includes quality improvements. Key changes include:
-
This build includes all the improvements from Windows 10, version 20H2.
-
No additional issues were documented for this release.
Important: Use EKB KB4562830 to update to Windows 10, version 20H2.
This security update includes improvements that were a part of update KB5011543 (released March 22, 2022) and also addresses the following issues:
-
Addresses an issue that causes a Denial of Service vulnerability on Cluster Shared Volumes (CSV). For more information, see CVE-2020-26784.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
For more information about security vulnerabilities, please refer to the new Security Update Guide website and the April 2022 Security Updates.
Windows 10 servicing stack update - 19042.1613, 19043.1613, and 19044.1613
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.
Known issues in this update
|
Symptom |
Workaround |
|
Devices with Windows installations created from custom offline media or custom ISO image might have Microsoft Edge Legacy removed by this update, but not automatically replaced by the new Microsoft Edge. This issue is only encountered when custom offline media or ISO images are created by slipstreaming this update into the image without having first installed the standalone servicing stack update (SSU) released March 29, 2021 or later. Note Devices that connect directly to Windows Update to receive updates are not affected. This includes devices using Windows Update for Business. Any device connecting to Windows Update should always receive the latest versions of the SSU and latest cumulative update (LCU) without any extra steps. |
To avoid this issue, be sure to first slipstream the SSU released March 29, 2021 or later into the custom offline media or ISO image before slipstreaming the LCU. To do this with the combined SSU and LCU packages now used for Windows 10, version 20H2 and Windows 10, version 2004, you will need to extract the SSU from the combined package. Use the following steps to extract the SSU:
If you have already encountered this issue by installing the OS using affected custom media, you can mitigate it by directly installing the new Microsoft Edge. If you need to broadly deploy the new Microsoft Edge for business, see Download and deploy Microsoft Edge for business. |
|
After installing the June 21, 2021 (KB5003690) update, some devices cannot install new updates, such as the July 6, 2021 (KB5004945) or later updates. You will receive the error message, "PSFX_E_MATCHING_BINARY_MISSING". |
For more information and a workaround, see KB5005322. |
|
After installing the Windows updates released January 11, 2022 or later Windows versions on an affected version of Windows, recovery discs (CD or DVD) created by using the Backup and Restore (Windows 7) app in Control Panel might be unable to start. Recovery discs that were created by using the Backup and Restore (Windows 7) app on devices which have installed Windows updates released before January 11, 2022 are not affected by this issue and should start as expected. Note No third-party backup or recovery apps are currently known to be affected by this issue |
This issue is addressed in KB5014023. |
|
We are receiving reports that the Snip & Sketch app might fail to capture a screenshot and might fail to open using the keyboard shortcut (Windows key+shift+S). This issue occurs after installing KB5010342 (February 8, 2022) and later updates. |
This issue is addressed in KB5014666. |
How to get this update
Before installing this update
Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
Prerequisite:
For Windows Server Update Services (WSUS) deployment or when installing the standalone package from Microsoft Update Catalog:
If your devices do not have the May 11, 2021 update (KB5003173) or later LCU, you must install the special standalone August 10, 2021 SSU (KB5005260).
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. |
|
Windows Update for Business |
No |
No longer available. |
|
Microsoft Update Catalog |
No |
No longer available. |
|
Windows Server Update Services (WSUS) |
No |
No longer available. |
If you want to remove the LCU
To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.
Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.
File information
For a list of the files that are provided in this update, download the file information for cumulative update 5012599.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 19042.1613, 19043.1613, and 19044.1613.
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