400 Error from WebService using .NET 2.0 and PreAuthenticate

Prashant from my team found this interesting issue.  I will blog it here until the KB comes out on this. Problem======WebService server responds back with a HTTP 400 error when using PreAuthenticate on the WebServiceProxy class.  This results in a System.Net.WebException: “The request failed with HTTP status 400: Bad Request” Symptoms=============================Consuming a WebService that uses Basic Authentication…

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