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Asked: 2026-05-17T23:15:31+00:00

I am consuming a Java Web Service as a WCF service from .NET. The

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I am consuming a Java Web Service as a WCF service from .NET.

The service has an HTTPS endpoint and requires the message to be signed with a client certificate.

I have set up WCF tracing and with the Service Trace Viewer I can confirm that the request is signed and sent off as expected and a valid response is returned from the service. But the response is not accepted by my console application. Instead the following exception is thrown:

Cannot find a token authenticator for
the
‘System.IdentityModel.Tokens.X509SecurityToken’
token type. Tokens of that type cannot
be accepted according to current
security settings.

What am I doing wrong?

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1 Answer

  1. Editorial Team

    Apparently there is a small but significant variation in the way WCF and this Java Web Service implements this type of security (might be specific to this service or might be a general Java issue).

    The correct response is received but WCF is unable to interpret a token element.

    My solution, or rather workaround, was to utilize the WCF predecessor WSE (Web Service Enhancements 3.0).

    A reference to the Microsoft.Web.Services3 assembly, a lot of head scratching (WTFs) and a lengthy work of code including a MutualCertificate10Assertion later I got my response.

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