How to send the trace data to you? btw, below is a summary of what see in all the servers with CAS role installed. The 4999 occurs frequently on the two virtual CAS. I assume the ExDateTime.AddDays exception is a different issue. Any idea what is it? MDB/HT/CAS physical 1 Watson report about to be sent for process id: 7608, with parameters: E12, c-RTL-AMD64, 14.01.0323.001, WS, M.Exchange.StoreProvider, M.M.ExRpcConnection.Create, M.E.D.Storage.ConnectionFailedTransientException-25922, 7547-7ce1, 14.01.0323.000. Watson report about to be sent for process id: 4960, with parameters: E12, c-RTL-AMD64, 14.01.0323.003, msexchangerepl, M.E.Cluster.Replay, M.E.C.R.DumpsterRedeliveryManager.ScheduleDumpsterRedelivery, System.NullReferenceException, 65cb, 14.01.0323.003. Watson report about to be sent for process id: 5156, with parameters: E12, c-RTL-AMD64, 14.01.0323.006, M.E.RpcClientAccess.Service, M.Exchange.StoreProvider, M.M.ExRpcConnection.Create, M.E.D.Storage.ConnectionFailedTransientException-25922, 7547-7ce1, 14.01.0323.000. MDB/HT/CAS physical 2 Watson report about to be sent for process id: 11628, with parameters: E12, c-RTL-AMD64, 14.01.0355.001, WS, M.Exchange.StoreProvider, M.M.ExRpcConnection.Create, M.E.D.Storage.ConnectionFailedTransientException-25922, 7547-fde9, 14.01.0355.001. Watson report about to be sent for process id: 11608, with parameters: E12, c-RTL-AMD64, 14.01.0355.001, WS, M.Exchange.StoreProvider, M.M.ExRpcConnection.Create, M.E.D.Storage.ConnectionFailedTransientException-25922, 7547-7ce1, 14.01.0355.001. HT/CAS virtual 1 Watson report about to be sent for process id: 3908, with parameters: E12, c-RTL-AMD64, 14.01.0355.002, M.E.RpcClientAccess.Service, M.Exchange.StoreProvider, M.M.MapiStream.get_Length, M.E.D.Storage.StorageTransientException-18334, aea7-d008, 14.01.0355.001. HT/CAS virtual 2 Watson report about to be sent for process id: 3344, with parameters: E12, c-RTL-AMD64, 14.01.0355.002, M.E.RpcClientAccess.Service, M.Exchange.StoreProvider, M.M.MapiStream.get_Length, M.E.D.Storage.StorageTransientException-18334, aea7-d008, 14.01.0355.001. Watson report about to be sent for process id: 4832, with parameters: E12, c-RTL-AMD64, 14.01.0355.001, WS, M.Exchange.Net, M.E.E.ExDateTime.AddDays, System.ArgumentOutOfRangeException, 9da0, 14.01.0355.001. Thanks

Sophia, so where can I send you the trace? If I have to check the trace myself, can you tell me how? thanks

All of our CAS/HT servers (SP1 RU6) reported these two Watson multiple times per day. Is there a fix for that? Thanks Watson report about to be sent for process id: 3608, with parameters: E12, c-RTL-AMD64, 14.01.0355.002, M.E.RpcClientAccess.Service, M.Exchange.StoreProvider, M.M.MapiStream.get_Length, M.E.D.Storage.StorageTransientException-18334, aea7-d008, 14.01.0355.001. ErrorReportingEnabled: False Watson report about to be sent for process id: 5140, with parameters: E12, c-RTL-AMD64, 14.01.0355.001, WS, M.Exchange.Net, M.E.E.ExDateTime.AddDays, System.ArgumentOutOfRangeException, 9da0, 14.01.0355.001. ErrorReportingEnabled: False

Hi, From your description, the RPCClientAccess service has some issues. In order to check it, you can collect Exchange traces using ExTRA, which you can refer to the following steps: a. Start->Run->ExTRA. By default, the path is "C:\Program Files\Microsoft\Exchange Server\v14\Bin\ExTRA.exe" b. Click the "Select a task" button. c. Click the "Trace control" icon. d. Click "OK" on the warning that appears. e. Make a note of the trace file location and make sure the max trace file size is adequate. (300 MB) f. Make sure "Run traces for" is unchecked. g. Click "Set manual trace tags." h. Select all checkboxes in the Trace Types box. i. In the Components to trace “Check” the box RpcClientAccess, on the right pane, Trace Tags, “uncheck” only the RPCRawBuffer so that all other tags remain checked. If RPCClientAccess spikes too much CPU of CAS server, you can leave only one CAS server running on the respective VM host and then check the result. Hope it helps. ThanksSophia Xu TechNet Community Support

Hi Lily, Please try this KB: http://support.microsoft.com/kb/2665115 Hope it helps.Rowen TechNet Community Support

Thanks, we are waiting for schema change. This will take a while as it needs to go thru layers of approval process.