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Release Date:

12/07/2022

Version:

Security-only update

Summary

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

REMINDER Windows 8.1 will reach end of support on January 10, 2023, at which point technical assistance and software updates will no longer be provided. If you have devices running Windows 8.1, we recommend upgrading them to a more current, in-service, and supported Windows release. If devices do not meet the technical requirements to run a more current release of Windows, we recommend that you replace the device with one that supports Windows 11.

Microsoft will not be offering an Extended Security Update (ESU) program for Windows 8.1. Continuing to use Windows 8.1 after January 10, 2023 may increase an organization’s exposure to security risks or impact its ability to meet compliance obligations.

For more information, see Windows 8.1 support will end on January 10, 2023.

Windows Server 2012 R2 will reach end of support on October 10, 2023 for Datacenter, Essentials, Embedded Systems, Foundation, and Standard.

Note 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

This security-only update includes new improvements for the following issues:

  • Starting with this release, we are displaying a dialog box to remind users about the End of Support (EOS) for Windows 8.1 in January 2023. If you click Remind me later, the dialog box will appear once every 35 days. If you click Remind me after the end of support date, the dialog box will not appear again until after the EOS date. This reminder does not appear on the following:

    • Managed Pro and Enterprise devices.

    • Windows Embedded 8.1 Industry Enterprise and Windows Embedded 8.1 Industry Pro devices.

  • When you use Encrypting File System (EFS) files over a remote Web Distributed Authoring and Versioning (WebDAV) protocol connection, the connection might be unsuccessful.

  • Applications might not run after an AppLocker publisher rule is deployed.

  • Addresses a known issue that might prevent you from using the Wi-Fi hotspot feature. When attempting to use the hotspot feature, the host device might lose the connection to the Internet after a client device connects.

  • Addresses a known issue in which Windows Servers that use the Routing and Remote Access Service (RRAS) might be unable to correctly direct Internet traffic. Devices which connect to the server might not connect to the Internet, and servers can lose connection to the Internet after a client device connects.

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

Known issues in this update

Symptom

Next step

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.

We are working on a resolution and will provide an update in an upcoming release.

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 (KB5016264) 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 (KB5015805).

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

Classification: Security Update

File information

For a list of the files that are provided in this update, download the file information for update KB5015877

References

For information about the security updates released on July 14, 2022, see Deployments - Security Update Guide.

Learn about the standard terminology that is used to describe Microsoft software updates.

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