So I've noticed recently that builds of Windows Server 2012 R2 which are pre-patched in Azure IaaS fail on the pre-requisite installation for Lync Server 2013. This also became apparent on a SQL Server 2012 installation as well and they're related to the same issue.
During the feature installation process we attempt to install .NET Framework 3.5 however the error you receive is that the 'source' location wasn't specified or can't find the files.
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During the feature installation process we attempt to install .NET Framework 3.5 however the error you receive is that the 'source' location wasn't specified or can't find the files.
Warning seen from the wizard when installing the feature:
How to resolve:
Install the following patch: http://support2.microsoft.com/kb/3005628
...and retry your feature installation again.
Install Lync Server 2013 pre-reqs:
Install-WindowsFeature RSAT-ADDS, Web-Server, Web-Static-Content, Web-Default-Doc, Web-Http-Errors, Web-Asp-Net, Web-Net-Ext, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Http-Logging, Web-Log-Libraries, Web-Request-Monitor, Web-Http-Tracing, Web-Basic-Auth, Web-Windows-Auth, Web-Client-Auth, Web-Filtering, Web-Stat-Compression, Web-Dyn-Compression, NET-WCF-HTTP-Activation45, Web-Asp-Net45, Web-Mgmt-Tools, Web-Scripting-Tools, Web-Mgmt-Compat, Windows-Identity-Foundation, Desktop-Experience, Telnet-Client, BITS