December 11, 2018—KB4471325 (Monthly Rollup)

**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.

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB4467687 (released November 27, 2018) and addresses the following issues:

• Addresses an issue that may prevent the use of the Seek Bar in Windows Media Player when playing specific files. This issue does not affect normal playback.
• Security updates to Microsoft Graphics Component, Windows Storage and Filesystems, Windows Wireless Networking, and Windows Kernel.
  For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get 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 informationFor a list of the files that are provided in this update, download the file information for update 4471325.