MS15-115: Description of the security update for Windows: November 10, 2015

Applies to: Windows Server 2012 R2 DatacenterWindows Server 2012 R2 StandardWindows Server 2012 R2 Essentials


This security update resolves vulnerabilities in Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker convinces a user to open a specially crafted document or to go to an untrusted webpage that contains embedded fonts.

To learn more about the vulnerability, see Microsoft Security Bulletin MS15-115.

More Information

  • All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
This security update was rereleased on November 11, 2015, for Windows 7 and Windows Server 2008 R2 to resolve the following issues:
  • Resolves crashing that occurred in all supported versions of Microsoft Outlook when users were reading certain emails.
  • Resolves crashing that occurred in supported versions of Microsoft PowerPoint when opening PowerPoint Presentations.
  • Resolves crashing that occurred in supported versions of Internet Explorer when browsing certain web pages such as groupware web pages in Internet Explorer.
  • Resolves problems that occurred while users were logging on to the system. For example, after a user restarted the computer and then pressed Ctrl+Alt+Delete at the logon screen, the screen flashed and then went black. The user was then unable to continue. There may be other, similar logon issues that are related to this issue.

Resolution for customers who are unable to log on to their Windows 7 computers:

If you cannot log on to your Windows 7-based computer because of the known issue mentioned earlier, we recommend that you uninstall security update 3097877 and then install all the latest updates from Windows Update.

The following section provides ways to uninstall the update:

How to get and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see
Get security updates automatically.

Note For Windows RT and Windows RT 8.1, this update is available through Windows Update only.