PRB: "Unable to Start Debugging" Error Message When You Send Debug HTTP Request

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Article ID: 306163 - View products that this article applies to.
This article was previously published under Q306163
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SYMPTOMS

When you debug an ASP.NET application in Visual Studio .NET, you may receive the following error message:
Error while trying to run project: Unable to start debugging on the web server. Server-side error occurred on sending debug HTTP request.

Make sure the server is operating correctly. Verify there are no syntax errors in web.config by doing a Debug.Start without debugging. You may also want to refer to the ASP.NET and ATL Server debugging topic in the online documentation. Would you like to disable future attempts to debug ASP.NET pages for this project?

CAUSE

This problem can occur if there are syntax errors in the ASP.NET application's Web.config file.

RESOLUTION

To resolve this problem, make sure that all of the Extensible Markup Language (XML) in the Web.config file is valid and well formed. Also, remember that everything in Web.config is case-sensitive.

Properties

Article ID: 306163 - Last Review: July 8, 2003 - Revision: 2.6
APPLIES TO
  • Microsoft ASP.NET 1.1
  • Microsoft Visual Studio .NET 2003 Professional Edition
  • Microsoft Visual Studio .NET 2003 Enterprise Architect
  • Microsoft Visual Studio .NET 2003 Enterprise Developer
  • Microsoft Visual Studio .NET 2003 Academic Edition
  • Microsoft ASP.NET 1.0
  • Microsoft Visual Studio .NET 2002 Professional Edition
  • Microsoft Visual Studio .NET 2002 Enterprise Architect
  • Microsoft Visual Studio .NET 2002 Enterprise Developer
  • Microsoft Visual Studio .NET 2002 Academic Edition
Keywords: 
kbconfig kbdebug kberrmsg kbprb kbweb KB306163

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