You shold add an.
<identity impersonate="true"/>
to your web.config and remove the anonimous option on iis configuration.

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MCP
http://www.rodrigodiniz.qsh.eu
> I M WORKING IN ASP.NET with C# AND GETTING PROBLEN FINDING THE SYSTEM USERNAME
> WHEN I DO environment.username
> it shows ASPNET
> and it not shows the domain name
> how can i do that