Iis7 - Unable To Start Debugging On The Web Server - Couldn't Start Debugging VS 2010 - II7 - Win 7 X64
Jan 11, 2011
I am running Visual Studio 2010 (as Admin), IIS 7 on Windows 7 x64. I am able to run the ASP.NET web site in IIS 7 without debugging just fine, but when I press F5 to debug it, I get: Unable to start debugging on the web server. Could not start ASP.NET debugging. More information may be available by starting the project without debugging. Unfortunately the help link is not helping me much and leads down a heck of a large tree of things. I checked the following:
Security requirements — I don't recall having to do anything special before. The worker process in IIS7 is w3wp.exe. It says that if it's running as ASPNET or NETWORK SERVICE I must have Administrator privileges to debug it. How do I find out if I need to change something here? Web site Property Pages > Start Options > Debuggers > ASP.NET is checked. Use custom server is set to the URL of the site (which works fine without debugging). Debugging is enabled in web.config. Application is using ASP.NET 3.5 (I want to move to 4.0 eventually but I have some migration to deal with). Application pool: Classing .NET AppPool (also tried DefaultAppPool). Surely it shouldn't be that hard to install IIS, VS, create a web site, and start testing it?
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May 20, 2010
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Jun 3, 2010
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Sep 22, 2010
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Dec 1, 2010
I'd installed newly Visual Studio 2010,and i want to create a new local website on my iis server and i follow these steps:
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Aug 11, 2010
I am getting this error, without any further details, when attempting to debug my ASP.Net project in VS2010. There are other developers using the same tools and code who are not having this problem therefore I know the problem is not in the web.config file. I have found several suggestions when googling the issue and tried them all to no avail. I uninstalled and re-installed VS2010 along with the .Net 4 framework. I made sure Anonymous as well as Windows authentication is enabled in IIS. I uninstalled and reinstalled IIS. I am at a loss. I can attach to the process and debug the ASP.Net code that way, but what I really need to be working on is a Silverlight app that is called from the ASP.Net and the breakpoints don't work in Silverlight when I attach to the process manually.
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Feb 3, 2011
If application is started without debugging - it runs smoothly, when I press F5 I get: "Unable to start debugging on the web server. Could not start ASP.NET debugging. More information may be available by starting the project without debugging. Click Help for more information"I noticed that problems are caused by URL Rewrite section in web.config:
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Feb 25, 2011
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Feb 2, 2010
I have seen this for a long time, and finally decided to put the question up here. I have some applications that I need to maintain that were written in Delphi 2007 for .NET (ASP.NET 2.0). Normally, the first time I run the application (using IIS) I get the classic "Unable to start debugging on the web server. Unable to attach to ASP.NET worker process" message. I simply press F9 (run) again, and it runs. Sometimes I have to try running several times before it will actually run. I am running Windows 7 64-bit (and have seen the same effect on Vista 64-bit). I do have IIS configured for ASP.NET, and I do have the following code in my Web.config file.
<system.webServer>
<modules>
<add name="DbgConnect" type="Borland.DbkAsp.DbkConnModule,Borland.dbkasp,Version=10.5.0.0,
Culture=neutral, PublicKeyToken=b0524c541232aae7" preCondition="managedHandler" />
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</system.webServer>
The point is that I eventually can run the application in the debugger, sometimes even on the first try. Many times when I get the failure it happens about 15 seconds or so after I press Run, sometimes even after I've hit a page or two (or three) of the Web app. And, yes, when Delphi gets into this mode, I can simply run without debugging, and all is fine (unless I really want to debug). And, I can just keep on trying to run in the debugger and eventually it will just work.
It appears that Delphi's .NET debugger is somehow getting the idea that the application cannot run, and then gives up and stops the process (which as I've mentioned is sometimes clearly running). I know of other developers who have also seen this behavior. My question is, does anyone know how to stop this annoying behavior?
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May 10, 2010
suddenly, with my Visual Studio 2008 I can no longer debugging my web applications (ASP.NET 3.5). I obtain this error: Unable to start debugging on the web server. Click Help for more information. Auto-attach to process [8360] w3wp.exe' on machine 'DELL' failed. The weird thing is that I haven't done special changes to my IIS.
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May 28, 2010
When I run my project from Visual Studio, my webpage comes up normally, and about 5-10 seconds later, a duplicate one appears as well. (not that hard to close the second one) I just thought I'd ask if anyone knows why it would do this.
By the way: It only seems to do this when I already have a browser window open (not including my project's webpage browser window).
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Jul 27, 2010
I am currently write an ASP.NET WebApplication in Visual Studio 2010. My default browser is Firefox. If I start an WebApplication, the WebApplication starts up in the same instance of Firefox. How is it possible to avoid it? How do I configure Visual Studio that the WebApplicaton starts in an new instance of Internet Explorer?
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