Hello; Once a month Micrsoft Security updates are installed. The primary node receives the updates first, reboots and completes the Failover to the passive node. The failback settings in the Cluster Administrator are set to: Allow failback Failback between 2 and 8 hours Failback never occurs Plus, the Passive Node receives it updates the followng day, reboots and STILL retains the SQL Cluster Group even though it rebooted. Any ideas??? Thanks Rick H.