MS16-014: Description of the security update for Windows 8.1 and Windows Server 2012 R2: February 9, 2016

Summary
This security update resolves vulnerabilities in Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker is able to log on to a target system and run a specially crafted application. To learn more about the vulnerabilities, see Microsoft Security Bulletin MS16-014.
Important
  • 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.
How to obtain 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 get security updates automatically, see the "Turn on automatic updating in Control Panel" section of this Safety & Security Center article.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in the following table that corresponds to the version of Windows that you are running. Find out if your computer is running the 32 or 64-bit version of Windows
Windows versionDownload link
Windows 8.1DownloadDownload 32-bit (KB3126434)
DownloadDownload 64-bit (KB3126434)
Windows Server 2012 R2DownloadDownload 64-bit (KB3126434)

File information

File hash information

File nameSHA1 hashSHA256 hash
Windows8.1-KB3126434-x86.msu9AD104DE533179DA35249F0EBD4CC97B28DCA65420282186A59D51895BC062739DAD3CCAC4D423ED7733664AD86D856F363E922D
Windows8.1-KB3126434-x64.msu305A6F14FFC6BBF55BE58D78D2DAE6123FE1BC32FA7CAC9FF30D38B320EED97D20BC4180F5A5B6158EF29AF620CED23C83250A74

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows 8.1 and Windows Server 2012 R2 file information

Notes
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    VersionProductMilestoneService branch
    6.3.960 0.17 xxxWindows 8.1 and Windows Server 2012 R2RTMGDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions
File nameFile versionFile sizeDateTimePlatform
Winsync.dll2007.94.9600.18183578,04828-Dec-201520:31x86
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Winsync.dll2007.94.9600.18183713,21628-Dec-201521:42x64
Winsync.dll2007.94.9600.18183578,04828-Dec-201520:31x86

How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support
Properties

Article ID: 3126434 - Last Review: 02/09/2016 18:11:00 - Revision: 1.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Foundation, Windows Server 2012 R2 Preview, Windows Server 2012 R2 Standard, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Pro

  • kbsecvulnerability kbsecurity kbsecbulletin kbfix kbexpertiseinter kbbug atdownload KB3126434
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