Description of the security update for Skype for Business 2016: September 12, 2017

Applies to: Skype for Business 2016


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 2016 installed on the computer.

Known issues

After you install this update, Skype for Business 2016 may crash when you click an incoming IM or call toast by using a screen reader. To fix this issue, install either of the following updates:

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.


To apply this security update, you must have either of the following updates installed:

3203472 August 1, 2017, update for Office 2016 (KB3203472)

4011099 September 5, 2017, update for Office 2016 (KB4011099)

File hash information

Package Name Package Hash SHA 1 Package Hash SHA 2
lync2016-kb4011040-fullfile-x64-glb.exe 32C0712A18F2C2868889C0C58A0BC984423788F2 DB9C94BEBF2761B9D4B368643AE73EEDBA8A1323D1788C1B93C8A290EC0D6132
lync2016-kb4011040-fullfile-x86-glb.exe 0A13C3DDD0778EB368318A0D871EEF8C287E9924 EB1CD31DF6A93DE77F1E97EC901019D91241E711CB2480B40D5A34C2280D8B75

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