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Dynamics 365 Community / Forums / Microsoft Dynamics NAV (Archived) / Nav Web Services Authe...
Microsoft Dynamics NAV (Archived)

Nav Web Services Authentication Fails

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Posted on by Community Member

We are trying to consume a nav web service. We have tested on UAT using Windows Authentication and it works. On LIVE it fails, it is also using Windows Authentication.

This is the error we get..

The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'Negotiate'. ---> System.Net.WebException: The remote server returned an error: (401) Unauthorized.

Does anybody what this means?

Our user accounts for NAV are set-up exactly the same on UAT and LIVE.

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  • Suggested answer
    Stefano Demiliani Profile Picture
    Stefano Demiliani 37,166 Most Valuable Professional on at
    RE: Nav Web Services Authentication Fails

    It could be an IIS problem.

    Check this settings:

    stackoverflow.com/.../the-http-request-is-unauthorized-with-client-authentication-scheme-negotiate

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