[From support ticket 832860 ] After running 5-7 load tests (10,200 users for 20 min), any load test which is run afterwards appears to not be picked up by the service (the load test displays as running, but the stats and remained time are never displayed, almost as if nothing is actually running).  I resolved the issue by cycling the scheduling service via Windows task manager.  After the service is reinitialized, load tests resume working correctly.  I just updated to 2014.2 and had never had this type of issue before.