Lync 2013 / SfB 2015 Client Update – May 2017

Our May update to the Office 2013-based Lync/SfB client (Kb 3191876) follows last month’s update and takes us from 15.0.4919.1000 to 15.0.4927.1000.

What’s Fixed

This update fixes the following issues:

  • Kb 4019641 Updates the meeting invitation to let mobile client join PSTN calls with one-tap in Skype for Business 2015 (Lync 2013)
  • Kb 4019640 Hebrew words in instant messages are displayed in reverse order in Skype for Business 2015 (Lync 2013)
  • Kb 4019639 Displays a message when you sign in Skype for Business 2015 (Lync 2013) without network connection

What’s New / Changed

Nothing documented.

Known Issues

None documented.


We had a new one last month and we have ANOTHER this month! If 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 (kb3191873) 1.0 21 April 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)”

NOTE2: Annoyingly, I was able to install the update on a client PC without updating the pre-req, so who knows what sort of hidden bugs that’s likely to cause?!


This is the client fix itself:

  • x86 (lync2013-kb3191876-fullfile-x86-glb.exe)
  • x64 (lync2013-kb3191876-fullfile-x64-glb.exe)


A reboot was not required.

Before / After



SfB 15.0.4919.1000 MSO 15.0.4919.1002 SfB 15.0.4927.1000 MSO 15.0.4919.1002
Before-15.0.4927.1000 After-15.0.4927.1000


Revision History

4th May 2017: This is the initial post.


– G.

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