Description of the security update for Skype for Business 2015 (Lync 2013): October 10, 2017

This security update contains the following improvements and fixes:

• Improves the conference experience for active speaker video stream in VDIv2 in Skype for Business 2015 (Lync 2013).
• "The video preview won't show" error occurs when you start a video call in Skype for Business 2015 (Lync 2013) in VDIv2.

• Skype for Business 2015 (Lync 2013) sign-in fails when the client moves from internal to external Internet connection.

• Duplicate working numbers for contacts are displayed on the call drop-down menu in Skype for Business 2015 (Lync 2013).
• Skype for Business 2015 (Lync 2013) doesn't display who changed the whiteboard content in a meeting.
• Skype for Business 2015 (Lync 2013) crashes when the computer resumes from sleep or hibernate mode.
• A user's department isn't displayed on their contact card in Skype for Business 2015 (Lync 2013).
• Can't automatically log on to Skype for Business 2015 (Lync 2013) that has the December 6, 2016, update installed.
• Adds a new Show/Hide My Video button for VDIv2 users to minimize the self-view video in Skype for Business 2015.

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.

• Download security update 4011179 for the 32-bit version of Skype for Business 2015 (Lync 2013)
• Download security update 4011179 for the 64-bit version of Skype for Business 2015 (Lync 2013)

Security update deployment information

For deployment information about this update, see security update deployment information: October 10, 2017.

Security update replacement information

This security update replaces previously released security update KB 4011107.

Prerequisites

Update	Download link
June 13, 2017, Lynchelploc update for Lync 2015 (Skype for Business) (3191937)	Download the 32-bit Lynchelploc update package now. Download the 64-bit Lynchelploc update package now.
June 9, 2015, update for Office 2013 (3054853) Note You don't have to apply update 3054853 if you applied the April 14, 2015, update (2889923) or the May 12, 2015, security update (3039779) for Lync 2013 (Skype for Business).	Download the 32-bit mso update package now. Download the 64-bit mso update package now.

File hash information

File information

The English version of this security update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight-saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.