Thomas.Poett@TEAMS (MVP Teams and Cross-Tenant M&A/D Migration Expert Lead)

For any other pre Skype for Business 2015 versions, e.g. Lync Server 2013 and the different OS, please refer to the old blog article: http://lyncuc.blogspot.de/2013/09/lync-2013-server-prerequisites-per.html Skype for Business 2015 Server Software Prerequisites: Since the installation of Skype for Business 2015 Server require a modern OS, only the Standard and Data Center version of Windows Server 2012 and 2012 R2 are entitled for an installation. Both servers having the same prerequisites.   Recommendation for Windows Server 2008 R2 is only give for in-place upgrades. Required HotFixes Windows Server (please consider the KB 2858668, KB2982006 and KB2533623 for in-place upgrades and fresh installations)   Windows Server 2012, KB article 2858668. Download . Windows Server 2012 R2, KB article 2982006. Download . Windows Server 2008 R2 KB article 2533623. Download . Not all HotFixes apply to the different rules, e.g. you only need the 2012 R2 KB2...

Lync 2013 Server Software Prerequisites: Lync 2013 requires several additional software to be installed and has the need of certain roles and features, as well as hotfixes. Since I'm missing a scripted PowerShell installation, segregated into Lync 2013 roles, I decided writing this detailed Blog, based on Microsoft Technet article and experiences. It shows you all requirements  and prerequisites for each Lync Server Roles and all supported Operating Systems. Especially with the additional software you need to install, the installation sequence is important , therefor .NET Framework is a prerequisites for PowerShell 3.0 and Identity Foundation As a common question; Which prerequisites do we have if I need the Administrative tools only. You simply can consider the Administrative Tools as a server role, therefor you need the same prerequisites as listed in the common section for "All Server Roles required". The other components, e.g. Visual C ++ or SQL Tools.... R...