October 11, 2022 - KB5018421 (OS Build 20348.1129)
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 Server 2022, see its update history page.
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ImprovementsThis security update includes improvements that were a part of update KB5017381 (released September 20, 2022). Key changes in this release include:
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
- This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.
For more information about security vulnerabilities, please refer to the Security Update Guide and the October 2022 Security Updates.
Windows 10 servicing stack update - 20348.1066This 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 After installing this update, file copies using Group Policy Preferences might fail or might create empty shortcuts or files using 0 (zero) bytes. Known affected Group Policy Objects are related to files and shortcuts in User Configuration > Preferences > Windows Settings in Group Policy Editor.
To mitigate this issue, you can do ONE of the following:
We are working on a resolution and will provide an update in an upcoming release.
- Uncheck the "Run in logged-on user's security context (user policy option)". Note: This might not mitigate the issue for items using a wildcard (*).
- Within the affected Group Policy, change "Action" from "Replace" to "Update".
- If a wildcard (*) is used in the location or destination, deleting the trailing "\" (backslash, without quotes) from the destination might allow the copy to be successful.
How to get this updateBefore 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.
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 Yes None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. 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: Microsoft Server operating system-21H2
Classification: Security Updates
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.
For a list of the files that are provided in this update, download the file information for cumulative update 5018421.
For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 20348.1066.
Check Windows Updates
Direct download link for KB5018421 MSU file from Microsoft Update Catalog:
Download KB5018421 MSU for Windows Server 2022 22H2 64-bit (x64) - 309.6 MB