Fixing problem installing SharePoint 2013 Cumulative Update
When installing SharePoint 2013 Cumulative Update (March 2017) that requires SP1 installed, if you encountered the following warning: The expected version of the product was not found on the system. You can force the installation to go ahead with the following switch successfully: ubersrv2013-kb3172497-fullfile-x64-glb.exe PACKAGE.BYPASS.DETECTION.CHECK=1 However future CU will still encounter the same warning. After a lengthy investigation, the culprit was the Language Pack for SharePoint and Project Server 2013 - Spanish/Espanol (version 15.0.4420.1017 found on Windows Control Panel | Programs | Programs and Features) installed on the farm. To rectify this problem, uninstall the existing Spanish Language Pack from all servers, run PSCONFIGUI on each server then install a newer version with SP1 (version 15.0.4569.1506) and run PSCONFIGUI on each server again. After that, the Cumulative Update ran successfully without the switch. I hope sharing th...