page access denied.

I just published my project(ASP.net and C#) and I selected "from  local network (intranet)" as authentication type.
When I browsed my page it has an error message:
401 - Unauthorized: Access is denied due to invalid credentials. You do not have permission to view this directory or page using the credentials that you supplied. How can I fix it?
I used Windows Server and SQL Server 2012.

Thanks.