January 14, 2020—KB4534273 (OS Build 17763.973)

NoteThis release also contains updates for Microsoft HoloLens (OS Build 17763.973) released January 14, 2020. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.

NoteOS Builds 17763.941 and later address the vulnerability in CVE-2020-0601 for Microsoft Azure virtual machines.

For more information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article.

Highlights

• Updates support for Google Chrome’s new cookie policies.
• Updates to improve security when using input devices such as a mouse, keyboard, or stylus.

Improvements and fixes

This security update includes quality improvements. Key changes include:

• Addresses an issue to support new SameSitecookie policies by default for release 80 of Google Chrome.
• Security updates to Windows App Platform and Frameworks, Windows Input and Composition, Windows Management, Windows Cryptography, Windows Virtualization, the Microsoft Scripting Engine, and Windows Server.
  If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Windows Update ImprovementsMicrosoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn’t apply to long-term servicing editions.

Known issues in this update

• 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 KB4493509, devices with some Asian language packs installed may receive the error, “0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND.”| This issue is addressed by updates released June 11, 2019 and later. We recommend you install the latest security updates for your device. Customers installing Windows Server 2019 using media should install the latest Servicing Stack Update (SSU) before installing the language pack or other optional components. If using the Volume Licensing Service Center (VLSC), acquire the latest Windows Server 2019 media available. The proper order of installation is as follows:

1. Install the latest prerequisite SSU, currently KB5005112

2. Install optional components or language packs

3. Install latest cumulative update
   Note Updating your device will prevent this issue, but will have no effect on devices already affected by this issue. If this issue is present in your device, you will need to use the workaround steps to repair it.Workaround:

4. Uninstall and reinstall any recently added language packs. For instructions, see Manage the input and display language settings in Windows 10.

5. Click Check for Updatesand install the April 2019 Cumulative Update or later. For instructions, see Update Windows 10.
   NoteIf reinstalling the language pack does not mitigate the issue, use the In-Place-Upgrade feature. For guidance, see How to do an in-place upgrade on Windows, and Perform an in-place upgrade of Windows Server.
   When setting up a new Windows device during the Out of Box Experience (OOBE), you might be unable to create a local user when using Input Method Editor (IME). This issue might affect you if you are using the IME for Chinese, Japanese, or Korean languages.Note This issue does not affect using a Microsoft Account during OOBE.| This issue is resolved in KB4534321.

How to get this update