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  1. Forum
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  5. QuickOPC-Classic in .NET
  7. Connections, Reconnections, COM/DCOM
  9. Trail Version "Access Denied" Error

Trail Version "Access Denied" Error

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18 Sep 2013 05:37 #1430 by support
Replied by support on topic Trail Version "Access Denied" Error
What was the process to select the server - did you pick it from the list of remote servers by browsing them while doing the binding, or have you entered the ServerClass into the binding manually? In both cases, what is the value of ServerClass in the binding? (check it by clicking "Edit Live Bindings" verb under the Property Grid while after selecting the control on the form that has the binding).

Thank you

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17 Sep 2013 13:57 #1429 by mjs5498
Replied by mjs5498 on topic Trail Version "Access Denied" Error
I did use another tool to test it and there ended up being a configuration issue on the server machine.

For initial testing I'm trying to bind data to a test box, however when I try to access the server I now get an "Invalid Class String" error.

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16 Sep 2013 17:07 #1427 by support
Replied by support on topic Trail Version "Access Denied" Error
This is usually caused by DCOM configuration.
Do you have some other simple OPC client to test from the same machine, and if so, does it work?

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16 Sep 2013 13:20 #1426 by mjs5498
Trail Version "Access Denied" Error was created by mjs5498
Hello,

I'm using the Trail version of the software and I'm running into an issue.

I'm using a C# form and I'm trying to bind a text box with an OPC item on a remote computer. When I browse to the computer it keeps telling me access denied. The full error is

OpcLabs.EasyOpc.OpcException: OPC operation failure. ---> System.UnauthorizedAccessException: Access is denied.
--- End of inner exception stack trace ---
at OpcLabs.EasyOpcRaw.DataAccess.RawEasyDAClient.CheckComResult(CHResult* hResult, IErrorInfo* pErrorInfo)
at OpcLabs.EasyOpcRaw.DataAccess.RawEasyDAClient.CheckComResult(CHResult* hResult)
at OpcLabs.EasyOpcRaw.DataAccess.RawEasyDAClient.BrowseServers(String machineName)
at OpcLabs.EasyOpc.DataAccess.EasyDAClient.BrowseServers(String machineName)
at OpcLabs.EasyOpc.Browsing.ServerBrowseable.BrowseNodes(Object parentNode, IEnumerable`1& nodes, IEnumerable`1& exceptions)


How can I get around this issue so that I can get to testing to see if this fits my needs? Any help that could be offered would be greatly appreciated.

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Moderators: support
  1. Forum
  3. Discussions
  5. QuickOPC-Classic in .NET
  7. Connections, Reconnections, COM/DCOM
  9. Trail Version "Access Denied" Error
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