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Every time when I open the browser at home page, showing '500-internal server error' and the page address was redirected to '.../dnn/DesktopModules/AuthenticationServices/ActiveDirectory/WindowsSignin.aspx which is not my home page is, should be '.../dnn/home.aspx', then I have to manually change to home link address and the page showed without issues.
look like the first time open the home page and dnn try to check your login status?
What if you disable ActiveDirectory authentication, just use the built-in one? It may have to do with your configuration of ActiveDirectory provider - Arkady Lesniara 11/14/2012
Thank you all, I think I found the solution. It's the ASP.net installation was not registered correctly... see this post answered by Dan
this is an issue in the AD provider. It is my experience that AD does not do auto signin, if dnn is in a sub directory (virtual dir / app). Furthermore, you want to check the rights of on the windowssignin.aspx
In general AD works fine, if you follow steves guidelines on: http://dnnauthad.codeplex.com/documentation
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