I have a .NET web application. When trying to run it in a debugging mode(F5), I always encounter this message:

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Error while trying to run project: Unable to start debugging on the web server. You do not have permissions to debug the server.

Verify that you are a member of the ‘Debugger Users’ group on the server. Would like to disable future attempt sto debug asp.net pages for this project?
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I have verified both my account aspnet account are in the debugger users group.

Can anyone give some hint?

Thanks