Issue: Unable to install September 2014 Cumulative updates on Lync Mediation server.
Problem Statement: Recently I was updating Lync Cumulative update for Mediation server however every time it was giving error.
I have read the error message however it shows package error.
Solution is alternate way means manual way.
1. Download the Cumulative Updates on local drive and Open Lync Management Shell drag the Lync CU updates.
2. On “Microsoft Lync Server 2013 Cumulative Update Installer” window click on ‘Install updates’ button.
3. After couple of minutes you will see some error. Click on ‘OK’ to error
4. Now go to local drive where Cumulative updates installer file stored. See below screenshot.
5. Then double click on OcsCore.msp once it complete, double click on ‘UcmaRuntime.msp’ and double click on ‘MediationServer.msp’.
6. Now all CU updates install properly.