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Release Date:

12/19/2018

Version:

OS Build 15063.1508

Note: Because of minimal operations during the holidays and upcoming Western new year, there won’t be any preview releases for the month of December 2018. Monthly servicing will resume with the January 2019 security releases.

Windows 10, version 1703, reached end of service on October 8, 2018 . Devices running Windows 10 Home, Pro, Pro for Workstation, and IoT Core editions 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.

IMPORTANT: Windows 10 Enterprise and Windows 10 Education editions will receive one year of additional servicing at no cost.

Improvements and fixes

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

  • Security update to Internet Explorer.

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 vulnerability, please refer to the Security Update Guide.

Windows Update Improvements

Microsoft 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

Symptom

Workaround

After you install the August Preview of Quality Rollup or September 11, 2018 .NET Framework update, instantiation of SqlConnection can throw an exception. For more information about this issue, see the following article in the Microsoft Knowledge Base:

4470809 SqlConnection instantiation exception on .NET 4.6 and later after August-September 2018 .NET Framework updates.

This issue is resolved in KB4480959.

How to get this update

Deployment Notes

For customers using Windows Update offline scan file, Wsusscn2.cab, no new December scan cab will be issued. You will need to download the December 2018 WSUS scan cab and then manually download this KB from Microsoft Update Catalog to deploy. An updated scan file that includes this KB will be available in the next security release in January 2019.

A Delta package for this update will not be available. Customers using Delta package updates need to apply the Full Update. Customers who do not apply the Full update, and only the December Delta package update from December 11, 2018 will experience an update failure when installing the January Delta Update. The January Full update will install correctly.

Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For more information, see Servicing stack updates.

If you are using Windows Update, the latest SSU (KB4465660) will be offered to you automatically. To get the stand-alone package for the latest SSU, go to the Microsoft Update Catalog.

Install this update

This update will be downloaded and installed automatically from Windows Update. To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4483230.

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