- KB 3126638 January 2016 cumulative update 5.0.8308.945 for Lync Server 2013 web components server
- KB 3126637 January 2016 cumulative update 5.0.8308.945 for Lync Server 2013 core components
More updates may still making their way and not available immediately.
- This cumulative update resolves an issue that prevents you from joining a meeting from outside Lync 2013 for iPhone or Lync 2013 for iPad on iOS 9 and 9.1.
- Skype for Business Online users in an Office 365 domain can’t IM or detect users in an on-premises domain