ofc all of you entered now because they think it's super easy problem and would say it's iis miss-configuration, But sadly to tell the Shardmanager opens for a long time "means the iis config is correct" but then in a random time maybe 3 hours maybe 3 days or even 3 weeks not specific time the Shardmanager close and the last message in the log is Billing Server Is Dead so any clue ?