Hi, I have 2 instances which implements 2 different instance IDs in 2 different windows services as: //windows service 1 instance 1 properties["quartz.scheduler.instanceName"] = "instanceName1"; properties["quartz.scheduler.instanceId"] = "instanceID1"; //windows service 2 instance 2 properties["quartz.scheduler.instanceName"] = "instanceName2"; properties["quartz.scheduler.instanceId"] = "instanceID2"; In the ADOJobstore, I can see that there are two instances. However, when I schedule a simple job in instance1, it is getting triggered in instance2 (and vise versa). By looking at the records created in jobstore, the scheduled job are properly tagged with the expected instanceIDs. Any idea of why this is happening?