Lync 2013 / SfB 2015 Client Update – November 2017

Our October Security update took us to 15.0.4971.1000 and today Kb 4011255 jumps us up 10 builds to 15.0.4981.1000.

What’s Fixed

This update fixes the following issues:

  • Kb 4051054 Phone number instead of contact name is displayed for an Active Directory contact in Skype for Business 2015 (Lync 2013)
  • Kb 4051055 A contacts group is deleted when renaming the group by using the Delete key in Skype for Business 2015 (Lync 2013)
  • Kb 4051056 Anonymous meeting join fails if the meeting organizer is disabled for federation in Skype for Business 2015 (Lync 2013)
  • Kb 4051057 Can’t join a meeting through Lync Web App after the meeting can’t be joined from the Skype Meeting Add-in in Outlook

What’s New / Changed

Nothing documented.

Known Issues

Nothing documented.


It’s been a big year for pre-req updates, but if you’re current then you’re OK today.

If however your patching isn’t to current you’ll need to check you have *all* of these pre-req’s. The Office 2013 SP1 requirement still applies if you’re using Outlook 2010. (Lync 2013 in all of its flavours – e.g. Lync Basic – is still a component of Office 2013).



Current Version


Update for Office 2013 (KB3054853) (NOTE 1 BELOW) 1.0 9 June 2015
LyncHelpLoc (kb3191937) 1.0 22 May 2017
Microsoft Office 2013 Language Pack Service Pack 1 (KB2817427) 1.0 13 February 2014

NOTE1: “You do not have to apply update KB3054853 if you applied the April 14, 2015, update (KB2889923) or the May 12, 2015, security update (KB3039779) for Lync 2013 (Skype for Business)”


This is the client fix itself:

  • x86 (lync2013-kb4011255-fullfile-x86-glb.exe)
  • x64 (lync2013-kb4011255-fullfile-x64-glb.exe)


I have all the pre-req’s already installed, had exited the client before we started & was not prompted for a reboot.

Before / After



SfB 15.0.4971.1000 MSO 15.0.4971.1000 SfB 15.0.4981.1000 MSO 15.0.4971.1000
20171108ClientUpdate-Before 20171108ClientUpdate-After

Revision History

8th November 2017: This is the initial post.


– G.

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