December 11, 2018—KB4471328 (Security-only update)

Applies to: Windows 7 Service Pack 1Windows Server 2008 R2 Service Pack 1

Improvements and fixes


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

  • 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


Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. 

If you are using Windows Update, the latest SSU (KB3177467) 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 is now available for installation through WSUS. 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 update 4471328