Description of the security update for Skype for Business 2015 (Lync 2013): September 12, 2017

Applies to: Microsoft Lync 2013Skype for Business


This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2017-8676, Microsoft Common Vulnerabilities and Exposures CVE-2017-8695, and Microsoft Common Vulnerabilities and Exposures CVE-2017-8696.

Note To apply this security update, you must have the release version of Skype for Business 2015 (Lync 2013) installed on the computer.

Improvements and fixes

This security update contains the following improvements and fixes:

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft 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 Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

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

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: September 12, 2017.

Security update replacement information

This security update doesn't replace any previously released update.


File hash information

Package Name Package Hash SHA 1 Package Hash SHA 2
lync2013-kb4011107-fullfile-x64-glb.exe 71D90CBE93CC5200D6EBD534E934C956C4EA4877 82411304E2EA6B1A8C634B1129A85EEAEA60ADFF48F9E15A8DDC18A5505AE2E5
lync2013-kb4011107-fullfile-x86-glb.exe BB66B59E0CCDB654681A75999315F5047180BD8C 7834C4D44B91389430B22E9D748925A454E00B51E94B31799CBB9EE9B7B15B4F

File information

How to get help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

Propose a feature or provide feedback on Skype: Skype User Voice portal