Installing and configuration of PowerPivot on a SP2013 with SQL Server 2012 SP1. I got the following error-message when running the PowerPivot configuration tool:
"The user is not a farm administrator. please address the validation failures and try again"
I´m a farm administrator with my account that is used to configure PowerPivot. The solution to this was to add my account as a secondary owner to the CA site collection.