In this post, we will solve “The HTTP request is unauthorized with client authentication scheme ‘Anonymous’ ” that you may face when authenticate tp the Project Server using PSI.
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In Project Server 2013, I am trying to read the projects using PSI. but I had noticed that when debug the solution I got the below exception message:
The HTTP request is unauthorized with client authentication scheme ‘Anonymous’. The authentication header received from the server was ‘NTLM’
This exception specifically occurred when at the below line of code:
ProjectSoapClient projectSvc = new ProjectSoapClient();
projectSvc.ClientCredentials.Windows.ClientCredential = System.Net.CredentialCache.DefaultNetworkCredentials;
projectSvc.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;Cause
This exception usually occurs if app.config security tag is not configured properly!
Solution
To overcome this exception, you should configure the app.config structure properly by doing the following :
- Make sure that Security Tag has been structured as the following:
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Ntlm" />
</security>- Make sure that binding Tag has been structured as the following:
<binding name="ProjectSoap" closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false"
proxyAddress="Type your proxy URL here" hostNameComparisonMode="StrongWildcard"
maxBufferSize="200000000" maxBufferPoolSize="200000000" maxReceivedMessageSize="200000000"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="false">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Ntlm" />
</security>
</binding>The final app.config structure should look like the following:
- Go back to run your solution that should be worked properly now.
Applies To
- Project Server 2013.
- Project Server 2010.