Visual Studio :: Getting "unable To Start Debugging On The Web Server" Error In VS2010 Targeting 4.0 Framework
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.
I am getting an error "Unable to start debugging on the web server..." while running as web application in VS2005. But the error seems only for this application. I created a test application, both in VS2005 and VS2008, and found no issues in running these applications.
I get error message "Unable to start debugging on the web server" in Visual Studio 2010. I clicked the button and followed the related suggestions without success.
This happens with a newly created local ASP.Net project when modified to use IIS instead of Cassini (which works for debugging). It prompts to set debug="true" in the web.config and then immediately pops up the error. Nothing shows up in the Event Viewer.
I am able to attach to w3wp to debug. It works but is not as convenient as F5.
I also have a similar problem with VS2008 on the same PC. Debugging used to work for both.
I have re-registered Framework 4 (aspnet_regiis -i). I ran the VS2010 repair (this is the RTM version). I am running on a Windows Server 2008 R2 x64 box.
I get this error when I hit F5 in VS 2008. I have checked that Windows authentication is enabled on the site and it is. I can mannully attach the debugger to the IIS process and it works. What could be wrong? I have tried alot of things without success.
I'm trying to debug my web application on my localhost machine in Visual Studio 2010 and I keep getting this error: "unable to start debugging on web server. The Microsoft Visual Studio remote debugging monitor(MSVSMON.exe) does not appear to be running on the remote computer."
Is there a way I can turn this off as I'm not trying to make any attempts debugging remotely.
I used to have nice development environment at XP for .Net web application development. I have now installed Windows 7 and going to take it as my new machine. I already installed VS2005 and I'm able to build a project. IIS is working fine and I'm able to open the web application in the web browser. Windows firewall is Off.When I click Start Debuggin on Visual Studio 2005 on Windows 7 I get following error:Unable to start debugging on the web server. Unable to connect to the web server. Verify that the web server is running and that incoming HTTP requests are not blocked by a firewall. What could be wrong? Something to configure in the IIS?
Unable to start debugging on the web server. The IIS worker process for the launched URL is not currently running.I'm running Windows 7 64 bit, VS 2008 sp1.When I first try to debug I get the error msg above. I wait a few minutes (presumably some service is starting) and debugging will start but no breakpoints are recognized.Some of the things I've tried:Changing the binding of my site from a static IP to "*".
Enabled windows authentication.made sure localhost = 127.0.0.1 in the hosts file.The website was built under windows xp and whatever version of IIS ships with xp. My web config has no errors that I know of but might be missing something required for iis 7 (??)
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:
1-from my iis i create a virtual directory 2-in command promt i execute these commands:
aspnet_regiis -i aspnet_regiis -ga aspnet
3-i go to VS2010 and create a new website (HTTP) and choose my created Virtual Directory has been built in previous step
Now if i do step 3 with framework 4 i don't have any problem but with framework 3.5 my website hasn't been run and says me : "Unable to start debugging on the web server.The web server is not configured correctly. See help for common configuration errors. Running the web page outside of the debugger may provide further information."
I have used Visual Web Developer (versions up to 2010) with no problems for several years. Starting last week I am no longer able to run or debug any ASP.Net application locally. I am running Windows XP, IIS 5.1, IE8, Visual Web Developer 2005, targetting .Net 2.0. I am not able to Start Debugging or Start Without Debugging for any project. When I attempt to Start Debugging, IE browses to [URL] instead of to the project I am attempting to run. When I Start Without Debugging, IE opens to about:blank and then when I close that window another IE window opens to [URL]
Maybe irrelevant, but I had the same problem with IE7 and VWD 2010 (versus IE8, VWD 2005). IIS is set to .Net version 2.0. I have the same problem whether I add a virtual directory to my project in IIS or not.
I just started getting the error message "Unable to Connect to the ASP.net Development Server" when debugging a website with VWD 2008 (everything was fine in the past). My system is Windows Vista with Windows Live OneCare firewall. I have reviewed other postings related to this problem, and they indicate firewall setting problems - settings not allowing VWD internet access. However, my settings on the "Windows Live OneCare Firewall Advanced Settings" tab specifically allow VWD.
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?
I am trying to run my application on IIS 7 and Windows Vista Home Premium. I am getting the following error "Debugging failed because Integrated Windows Authentication is not enabled". How do i resolve this issue?
I'm getting this strange error when i'm in SplitView or DesignView and i refresh view (i'm using VisualStudio 2010 .Net 4.0). This is happening only for this page and i have never seen anything like it, neither do i understand what is goin on.
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  w3wp.exe' on machine 'DELL' failed. The weird thing is that I haven't done special changes to my IIS.
I run the start debugging option...it runs successfully. but still is shows start debugging option is shown in the Visual studio 2005 IDE. And one more problem is ::I applied break points in one page and run the application. but those break points are not detected....
I have a solution I have been working on over the last few weeks with a 3 or 4 projects in that used to build and begin debugging in under 10 seconds.The solution contains 3 dll's and 1 mvc project.
As of today, it takes about 2 minutes to start debugging, it keeps pausing on "loading symbols for ccpCodeProvider.dll".
I'm debugging on the internal vs development server, and I haven't changed anything since yesterday?I haven't ever used symbols before, and I'm not trying to debug the framework or anything, I just want my stupid web project to run.I created a new solution from scratch and added a random console app, and that also takes forever to debug.
I was working away just fine on my ASP.NET 2.0 application (Win7 64 bit, IIS 7.5.76) when all of a sudden I get a pesky error message "Unable to start debugging on web server" when I start the app in Visual Studio. The error message (attached) is HTML text and is so long that I can't even get to the bottom of it to see what the punchline is. It happens with debug switched on and off.
I am trying to update an old VS 2003 Web project. I've worked on it plenty of times in the past on this machine with no issues, but for some reason now when I try to debug it I get the above error (Unable to start debugging the web server. Access is denied.) ANybody have any thoughts on what might cause this?
Now that I am playing with NHibernate I am getting a lot more YSODs as I am learning it however I seem to get this error sometimesafter a YSOD:This webpage is not available The webpage at http://localhost:49497/ might be temporarily down or it may have moved permanently to a new web address.Error 139 (net::ERR_TEMPORARILY_THROTTLED):
Unknown error.Is there any way to disable this because I have to wait a few minutes every time and that is a pretty big killer is productivity?