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  1. Forum
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  5. QuickOPC-UA in .NET
  7. Connections, Reconnections, Certificates
  9. Use of already existing certificate ends up generating new certificate

Use of already existing certificate ends up generating new certificate

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24 Nov 2021 14:12 #10391 by support
Replied by support on topic Use of already existing certificate ends up generating new certificate
I think you have misunderstood the documentation. You cannot first have the application auto-generate the certificate, then specify the name and expect it to match.
The same application name needs to be used when the certificate is auto-generated, and when it is just searched for.

So, the expected workflow is to:
1. Change the code to specify the intended ApplicationName.
2. Let the code run to auto-generate the certificate
3. Subsequent runs of the code should find it.

You cannot switch the order of Step 1 a and Step 2.

Best regards
The following user(s) said Thank You: Alvar Ljungfjär

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24 Nov 2021 13:51 #10390 by Alvar Ljungfjär
Use of already existing certificate ends up generating new certificate was created by Alvar Ljungfjär
Hello,

I have encountered a problem where I am trying to connect my ua client to my opc server. I have already got a certificate which is trusted and according to this documentation I only need to specify the client name and the certificate will be found and used. However when I set the application name like this in the code:
EasyUAClient.SharedParameters.EngineParameters.ApplicationParameters.ApplicationManifest.ApplicationName = [my_application]
a new client certificate is created with the same name and the same beginning of the uri but which ends with
:1.0.0.0:neutral:null

I want to use my already existing certificate, how can I achieve this?

Best regards
/Alvar

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  1. Forum
  3. Discussions
  5. QuickOPC-UA in .NET
  7. Connections, Reconnections, Certificates
  9. Use of already existing certificate ends up generating new certificate
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