http://blogs.msdn.com/b/axinthefield/archive/2011/03/01/dynamics-ax-event-ids.aspx Recently a fellow PFE compiled a list of the AX Event IDs with their description and a possible action. This post is intended to give end users a better idea of the messages generated by the AOS service within the Application Event Log within the Windows Event Viewer. If you are receiving messages, it may be necessary to contact the Dynamics AX Support Team at Microsoft for more assistance as this may be an indication of more serious troubles in the system. Error and Warning Messages The messages in the following table can be informational only, but often are a result of an issue within the Dynamics AX application. They do may require user action. ID Message text Description Action 103 Microsoft Dynamics AX 2009 – The control handler not installed The Microsoft Dynamics AX Server Manager could not initialize the control handler. Can be caused by failed system setup. The registration of the AOS ...