Have you ever faced that error before?
I have started development lately on a Windows 2003 Standard Server, having both VS.NET 2003 and VS.NET 2005 installed.
I was trying to open a DotNetNuke project yesterday and got the error by VS.NET 2003:
Error while trying to run the 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
I have Integrated Security on, Network Service, ASPNET, Administrator (Local Account), IUSR_MachineName accounts all added in the Debugger Users group.
Lately, I figured out after reading this document, How To Solve Debugger Problems
If you created the web project with a full machine name (like “machinename.domainname.something”), the web site is recognized as “Internet” site.
So the default setting of IE will impact on the behavior of log on. In this case, you need to enable logging on with your current user account in “Internet” area with IE setting.
But it is not the default setting of IE, so you’d be better off if you create project with only the machine name.
So, open the IE browser, go to --> Tools --> Internet Options --> Security --> Custom Level --> User Authentication --> Select Automatic Logon with current username/password
This will hopefully, fix your problem.