Lync 2013 / SfB 2015 Client Update – July 2018

Having recently hopped to the identity-challenged 15.0.5041.1000, this month we jump to the more self-assured 15.0.5049.1000 courtesy of Kb4022225.

What’s Fixed

  • Kb 4340831 Unread messages of a reopened chat room are indicated incorrectly when restarting Skype for Business 2015 (Lync 2013)
  • Kb 4340830 Rate My Call privacy statement incorrectly redirects to Lync 2010 privacy statement
  • Kb 4340829 You’re prompted for Exchange credentials after switching network in a Skype for Business hybrid environment

What’s New / Changed

Nothing documented.

Known Issues

Nothing documented.


It’s all good if you’ve been diligent in your patching.

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-kb4022225-fullfile-x86-glb.exe)
  • x64 (lync2013-kb4022225-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 15.0.5031.1000 MSO 15.0.5031.1000 SfB 15.0.5049.1000 MSO 15.0.5031.1000
Before-Kb4022225-15.0.5049.1000 After-Kb4022225-15.0.5049.1000

Revision History

27th July 2018: This is the initial post.


– G.

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