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No suitable UserTokenPolicy found for the possible endpoints (UA_STATUSCODE_BADINTERNALERROR)
October 2, 2020
16:22, EEST
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richN9177
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Hi

I’ve written an OPC UA Client and i’m using ProSys OPC UA Simulator Server to test it. Running in Anonymous mode my client connects and i can browse the server. however when I configure my client to use a Username and Password it fails with No Suitable UserTokenPolicy found for the possible endPoints. I’ve debugged it and it appears that http://opcfoundation.org/UA/Se…..olicy#None is not in the endpoints userIdentityTokens array.

I’ve set up a user in The OPC UA Simulator Username & Passord box is ticked
Security Modes = None
Security Policies = All are ticked

Any help would be appreciated .

Thanks

October 5, 2020
13:57, EEST
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Matti Siponen
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Hello,

Which OPC UA SDK have you used to implement your Client application?

October 5, 2020
14:30, EEST
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richN9177
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Thank you for responding.

I’m using Open62541 libraries. After further testing I can connect using the username and password, (proSys connection log confirms this) but only when anonymous is set in the user tab in ProSys. When connecting using UaExpert I don’t need to do this. One thing i’ve noticed is that the UaExpert sets the ClientIdentity whereas mine isn’t set and at the moment I can’t see where I can set this in Open62541.

Thanks

October 5, 2020
16:02, EEST
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Jimmy Ni
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Hello,
Sorry that we don’t know much about Open62541, as it’s an open source software which we haven’t tested. Probably, you are missing some parameter or you need to create a step somewhere to make an encrypted password version of the token. This is something on stack level and as a developer, you shouldn’t have to be concerned about it. We have a Ansi C based OPC UA SDK with proper APIs that take care of stack level functions. If you’d like to try the free eval edition, please contact sales@prosysopc.com.

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