We have been having many issues with resources on the Exchange 2013 CU6 servers recently... we have always had them but they seem to be happening more often now.
I remember back with Exchange 2010 there was the issue with iOS 6.1 devices syncing... this almost feels similar as our server is hitting 100% CPU usage. I found that we still have some of those, but I can't find any documentation stating that this carried over to Exchange 2013. Does anyone know?
It seems like everytime I look at Sysinternals Process Explorer the following are pretty much all at 90-100% CPU;
When the CPU spikes, we generally get calls from users saying Outlook disconnected and after a 2-5 mins Outlook clients connect again. We see this on all our servers in the DAG...
Ive been checking the counters in "\MSExchange RpcClientAccess\User Count" thinking this could help find the issue, but have had no luck... Running ExPerfWiz all afternoon. Averaging 8000-9000
Looking for ideas or suggestions?