A Dtrace of the EvFsaArchivingTask process will show the following exception.
(EvFsaArchivingTask) <7000> EV-H {FileSystemArchivingTaskProcessor.TaskMain} Exception: Retrieving the COM class factory for component with CLSID {BD7A3509-B3F3-42FC-8FFE-FE8D1CCFE013} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)). Info: Diag:HRESULT: 80040154 Type:System.Runtime.InteropServices.COMException ST: at System.Runtime.Remoting.RemotingServices.AllocateUninitializedObject(RuntimeType objectType)| at System.Runtime.Remoting.Activation.ActivationServices.CreateInstance(RuntimeType serverType)| at System.Runtime.Remoting.Activation.ActivationServices.IsCurrentContextOK(RuntimeType serverType, Object[] props, Boolean bNewObj)| at KVS.EnterpriseVault.FileSystemArchivingTask.FileSystemItemProcessor..ctor(ServerControlEvents ce, Boolean reportMode, Boolean synchronizeFolders, Boolean shortcutMode, FileSystemArchivingCheckPoint fsaCheckPoint, FSAFilterController filterController, String taskName, String taskId, String evWebAppUrl, String foldeShortcutFileName)| at KVS.EnterpriseVault.FileSystemArchivingTask.FileSystemArchivingTaskProcessor.StartItemProcessorThreads()| at KVS.EnterpriseVault.FileSystemArchivingTask.FileSystemArchivingTaskProcessor.TaskMain(String[] args) Inner:None
This issue is due to a file on the Enterprise Vault (EV) server not being registered properly.
Perform the following to ensure all EV files are registered properly.