Configure the OPC server application

The following procedure describe how to configure the OPC server application for anonymous connections:

Launch DCOMCONFG (see Appendix A, Launching DCOMCNFG).
Find the OPC Server application, and go to its properties.
- Windows 2000: select from the list in the Applications tab.
- Windows XP: Expand My Computer, then DCOM Config. OpcEnum is located under DCOM Config.
General tab: Set the “Authentication level” to None.
Security tab: Do the following:
1. Choose “Use custom access permissions” and make sure the following users are in the list with all permissions allowed:
  - ANONYMOUS LOGON (if possible)
  - Everyone
  - INTERACTIVE
  - NETWORK
  - SYSTEM
2. Choose “Use custom launch permissions,” and make sure that the same users are in the list as for access permissions (as above).
Indentity tab: Select the following:
- “The System Account,” if possible.
- If the client and server are on the same domain, select the “The interactive user.”
  
  Otherwise, select “This user,” and enter the credentials of a user valid on the OPC server host.