August 8, 2017—KB4034679 (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:

  • Security updates to Windows Server, Microsoft JET Database Engine, Windows kernel-mode drivers, Common Log File System Driver, Microsoft Windows Search Component, and Volume Manager Driver.

For more information about the resolved security vulnerabilities, see the Security Update Guide.

Known issues in this update


Symptom Workaround
If a machine has more than one monitor connected and the screen numbering is not in sequence, some applications will experience rendering issues.
  1. Enable Desktop Composition (needs graphics card support).
  2. Make sure that the main monitor is on the top left in the monitor layout.

This issue has been resolved with KB4039884.

The WordPad application can sometimes crash on launch after installing KB4025341. Microsoft is working on a resolution and will provide an update in an upcoming release.

How to get this update


This update is now available for installation through WSUS. To get the standalone 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 4034679.