Windows 2000

This section describes how to configure the OPC Server on Windows 2000.

To configure the OPC Server:

Choose Start | Run. Type dcomcnfg and click OK.
The Component Services dialog will appear.
In the tree pane, locate and select Computers under Component Services.
Right-click My Computer in the pane on the right, and choose Properties from the context menu.
Select the Default Properties tab. Make sure the settings are adjusted as follows:

Property	Setting
Enable Distributed COM on this computer	selected
Enable COM Internet Services on this computer	not selected
Default Distributed COM Communication Properties
Default Authentication Level	Connect
Default Impersonation Level	Identify
Provide additional security for reference tracking	not selected

Click Apply to save your changes.

You need to edit the Access Permissions and Launch and Activation Permissions settings.
Select the Default Security tab, and then click Edit Default in the DefaultAccess Permissions section.
In the Registry Value Permissions dialog, select the user you want to edit permissions for and then choose Allow Access from the Type of Access menu.
This setting is needed for OPCEnum.exe to function, and for some OPC Servers and clients that set their DCOM authentication level to None in order to allow anonymous connections. If you don't use OPCEnum.exe you might not need to enable remote access for anonymous users.

Click Apply to save your changes.

Now you need to edit the default launch permissions.
Click Edit Default in the Default Launch Permissions section. Make sure the type of access for necessary users (including System and Interactive) is set to Allow Launch.
Click OK to save your changes.

You have now configured your OPC Server.

Note: You need to restart this machine so that your settings can take effect.