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:

1. Configuring the  general/default settings
2. Configuring the settings for OPCENUM
3. 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:

1. Click on the Windows START button
2. Click on the RUN option
3. Type "DCOMCNFG" (without the quotes) and press ENTER. (case does not matter)

This will load the Windows "Component Services", which is shown below:

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