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Asked: 2026-05-26T02:14:48+00:00

I am using fiddler to generate a RESTful request to a TransportCredentialOnly(Basic) service. if

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I am using fiddler to generate a RESTful request to a TransportCredentialOnly(Basic) service. if I include the “Authorization: Basic” line, I always get an error 400 bad request. Otherwise, if I leave it out, I get the expected 401.

Usually when I see a 400 there is a stack trace, or some clue to help me debug it, but in this case nothing. I am going in circles on this one. The GUID+app_tracelog & app_tracelog don’t seem to update or reveal anything, and in my service.config file I have

   <serviceDebug includeExceptionDetailInFaults="True" />

Which for most errors does yield a stack trace. It would seem the auth subsystem is getting upset for some reason, but I have no clue why…

My request header in fiddler simply has Authorization: Basic [Base64 version of name;pass] and that’s it.

Please advise!

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1 Answer

  1. Editorial Team

    Name and password should be separated by a colon, not a semi-colon.

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