UntrustedURLConnectionIOException invoking Exception invoking a web service with https and requireClientCertificate

Solution Verified - Updated -


  • We are currently calling a web service, which is a SOAP service with Transport binding and has <sp:HttpsToken RequireClientCertificate="true"></sp:HttpsToken>, this service is hosted on IIS server, when trying to connect from CXF , we are getting
Caused by: org.apache.cxf.transport.http.UntrustedURLConnectionIOException: UntrustedURLConnectionIOException invoking https://<host>:<port>/Service1.svc: RequireClientCertificate is 
set, but no local certificates were negotiated.  Is the server set to ask for client authorization?


  • Red Hat JBoss Fuse
    • 6.x
  • Apache CXF
    • IIS Server

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