>It's just like logging onto Windows....it's a Windows logon dialog. The server is requesting authentication and the client machine is displaying the logon dialog.
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>Anyway...the third party Web Service provider gave us the code to get it working. No more dialog. Thanks for your help.
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Standard .NET code or something specific to their solution? If it can be done via standard .NET class calls, is it something you could post here? This might be useful to other developers.