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No OPC servers found on the machine specified - Rockwell

Hi Experts,

   When i am trying to add a source system in PCo, its showing an error "No OPC servers found on the machine specifed".

   i have gone through with following threads also.

  No OPC servers found on the machine specified

  Pco2.3 Source sys & Destination sys connection issue

   We have tried with the OPC test tool which is come with Rockwell, its showing all the OPC servers list. But in PCo i am not able to see.

   The same PCo we have installed in OPC server engineer laptop, in that we are able to all the list of OPC servers.

   So can anyone please help me or suggest me what needs to be done for connection successful. Thanks,


   Versions: PCo 2.3, Rockwell 20 OPC DA

   OS: windows 7

Former Member
Former Member replied

Hi Steve & Swaroop,

       Hooray, now I am able to see all OPC server in PCo.

       My client people reinstalled the Wondarware OPC with new version (Wonderware InTouch 2014).

       I have installed the following things

       OPC Core Components Redistributable (x86)

       OPC UA Local Discovery Server

       SAP PCo   

       In DCOM Settings we have set the Launch and Activation Permissions & Access Permissions to Use default for OpcEnum in Security tab.

       And restarted the OPCEnum Service.


       Thank you so much for your inputs.


Vijay A.

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