WCF Services Failure with Exception message: The authentication scheme ‘“Negotiate’ is not supported.
October 4, 2010
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Exception type: NotSupportedException
Exception message: The authentication scheme ‘“Negotiate’ is not supported.
Open a prompt and type:
# cd c:\inetpub\AdminScripts
# cscript adsutil.vbs get w3svc/NTAuthenticationProviders
If you find you have something like “Negotiate,NTML” then type:
# cscript adsutil.vbs set w3svc/NTAuthenticationProviders
or delete the key, since IIS6 has this value by default
# cscript adsutil.vbs delete w3svc/NTAuthenticationProviders
By the way, you should probably check it also on the specific WebSite
where the service is setup, example:
# cscript adsutil.vbs get w3svc/1/ROOT/NTAuthenticationProviders