DCOM errors typically begin with a "0x800" code. Specifically, DCOM Error 0x80070005 appears in the OPC Client application when it succeeds in launching an OPC Server or OpcEnum, but fails to receive a reply from either of the applications. This error could be caused under several conditions. Read the full article to troubleshoot and repair this DCOM error. The OPC Training Institute’s website has a whitepaper that provides details on this error its various potential causes, and how to solve them using a step-by-step guide.