Check out these resources for information about troubleshooting this:

http://www.gotdotnet.com/team/csharp/information/Whitepapers/howtosolvedebuggerproblems.doc

http://support.microsoft.com/default.aspx?scid=KB;EN-US;q306005&


>All,
>
>I am trying to debug a .Net app and get the following message:
>
>Error while trying to run project: Unable to start debugging on the web server. Access is denied. Would you like to disable future attempts to debug ASP.Net pages for this project?
>
>I am a member of the 'Debugger Users' group.
>
>What else needs to be set to allow debugging?
>
>TIA
>
>Rex