The SQL Server failover cluster instance ‘[yourinstance]′ was not correctly detected. The instance was discovered on the local node but it was not found to be active.

Recently when upgrading several of our SQL Server 2008 R2 Clusters to SQL Server 2008 R2 SP1 (KB2528583) clusters I ran into a problem where the update failed, and kept failing. When searching in the logfiles located in: C:\Program Files\Microsoft SQL Continue reading