When some RPC requests return ecMaxThreadsPerMdbExceeded or ecMaxThreadsPerSCTExceeded errors in a Microsoft Exchange Server 2010 environment, a memory leak or memory corruption occurs on Exchange Client Access servers or Hub Transport servers. Additionally, Microsoft Outlook cannot connect to Exchange servers, and some events that resemble the following are logged in the event log:
ID: 4999
Level: Error
Source: MSExchange Common
Machine: Machine
Message: Watson report about to be sent for process id: ProcessID, with parameters: E12N, Build Type, Application Version, edgetransport.exe, EXCHMEM.dll, Call Stack Hash, c0000005, Call Stack Hash, Assembly Version.
Level: Error
Source: MSExchange Common
Machine: Machine
Message: Watson report about to be sent for process id: ProcessID, with parameters: E12N, Build Type, Application Version, edgetransport.exe, EXCHMEM.dll, Call Stack Hash, c0000005, Call Stack Hash, Assembly Version.
ID: 10003
Level: Error
Source: MSExchangeTransport
Machine: Machine
Message: The transport process failed during message processing with the following call stack: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Level: Error
Source: MSExchangeTransport
Machine: Machine
Message: The transport process failed during message processing with the following call stack: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
ID: 4999
Level: Error
Source: MSExchange Common
Machine: Machine
Message: Watson report about to be sent for process id: ProcessID, with parameters: E12N, Build Type, Application Version, Microsoft.Exchange.RpcClientAccess.Service.exe, EXCHMEM.dll, Call Stack Hash, c0000005, Call Stack Hash, Assembly Version.
Level: Error
Source: MSExchange Common
Machine: Machine
Message: Watson report about to be sent for process id: ProcessID, with parameters: E12N, Build Type, Application Version, Microsoft.Exchange.RpcClientAccess.Service.exe, EXCHMEM.dll, Call Stack Hash, c0000005, Call Stack Hash, Assembly Version.