Why does CredentialCache.DefaultCredential contain empty strings for domain, username, and password

iis networkcredentials
devlife picture devlife · Oct 2, 2011 · Viewed 12.5k times · Source

Does anyone have any ideas as to why CredentialCache.DefaultCredential would return an ICredential instance with empty strings for domain, username, and password? I'm running a WCF service on IIS 7.5. It works fine on one server but never works on another. I have verified that the IIS application has Windows Authentication enabled....

Here is how it's being used:

string url = string.Format("{0}/departments/finance/_vti_bin/listdata.svc", _IntranetAddress);
var financeDataContext = new FinanceDataContext(new Uri(url))
{
    Credentials = CredentialCache.DefaultCredentials
};

Answer

Tariqulazam picture Tariqulazam · Oct 17, 2011

I am not sure how it is working in one of your servers? I hope you already read this http://msdn.microsoft.com/en-us/library/system.net.credentialcache.defaultcredentials.aspx but it clearly says "The ICredentials instance returned by DefaultCredentials cannot be used to view the user name, password, or domain of the current security context."

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