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I am working on a C# application that interfaces with a Siemens OPC Server housed on the same PC. I've tested the server with OPC Scout as well as the Kepware QuickClient for communication problems, and they both work fine.

When I try to connect to my software, however, it comes back with an error that happens on the .Connect() command:

Could not load file or assembly 'OpcComRcw, Version 2.0.105.1, Culture=neutral

There is another PC on a different site I have tested the software on, and it appears to connect with no problems. Any ideas as to what would cause the program to throw this error?

Alex Watts
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1 Answers1

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These assemblies are freely available from the OPC website or you can grab them from my github repository :)

Just copy OpcComRcw.dll to the application's folder or the computer´s GAC.

Community
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jdecuyper
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