DCOM Configuration Tutorial for Windows XP & 2003 Editions This section is intended to provide general guidance on configuring DCOM settings for Windows XP and 2003 Operating Systems, which do differ slightly from Windows NT and 2000 Operating Systems. This article will simply outline the steps to configure DCOM. If you would like to know and understand the reasons WHY some of these settings are so, then please read: NT/2000 User Security Permissions/Considerations Special considerations in multiple domain settings. We will configure DCOM in 3 steps: Configuring the general/default settings Configuring the settings for OPCENUM Configuring the settings for your OPC Server Starting DCOM Configuration The DCOM Configuration utility does not have an associated icon in either the Windows Control Panel, nor the Windows START button.. so you have to start it manually: Click on the Windows START button Click on the RUN option Type "DCOMCNFG" (without the quotes) and press ENTER. (case does not matter) This will load the Windows "Component Services", which is shown below: Next > Configuring Default DCOM Settings