Hi,
I'm facing the same issue. I've tried deleting the retention.dat file but it did not seem to resolve the issue...
Monitoring Engine Process 15 minute delayed start?
Re: Monitoring Engine Process 15 minute delayed start?
This thread is 3 years old. Please open a new topic so we can keep things separate and organized. If you would like, you can refer back to this thread but please describe your issue in your own words as well.
Former Nagios employee