"Operations started by an earlier run of the Farm Configuration Wizard are still in progress. You must wait for those operations to complete before running the wizard again. You can monitor the status of these operations by looking at the "Farm Configuration Wizard" timer job on the Timer Job Status page in the Monitoring section of Central Administration"
Was the error and unable to run "farm configuration wizard". after some lookups I got TimerJob Status and job named "Farm configuration wizard" which was disabled, so deleted that and I got the option to re-run it again :)