In this post I will show you how to fix unable to start debugging on the web server. The web server is not configured correctly. 

"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."

Here are 5 solutions to solve the issue and I hope it will help you that find this problem.

Solution 1

In this method first check your particular website has started or not if not start your website.

Open you’re IIS and select your particular website right click on that site and select Manage WebSite under that click start option.



Test it and see how it work or not. If don’t, you need to find another solution.

Solution 2

1. Open IIS and now select your application ---> Right click on that application and select Properties
2. Now one window will open in that Select Directory tab ---> under that select Application settings  ---> Click on “Create” button (Once it created that button text will change to “Remove”)
3. After that click Apply and click OK button.
4. If you’re using IIS7 no need to do the first and second steps just select your application and right click on it and select option “Convert to Application”



Then, try it again. I hope it will work fine otherwise you will see another solution.

Solution 3

1) Open  IIS
2) Select your website and right click and go to properties
3) After that select  Asp.net tab
4) Under that click on Edit Configuration
5) Select Application Tab
6) Under Select C# as default language and check the Enable Debugging checkbox

Some times that default language was set to vb. After set the above properties run your application now it will work for you  Still if it doesn’t work for your follow another method.

Solution 4

Open the command prompt and run ASPNET_REGIIS.EXE with -i parameter

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis –i

Solution 5

1) Right click on your project in VS2005 or VS2008 or VS2010.
2) Click on Properties
3) Click on Web tab
4) Under Servers, click on the radio button Use Visual Studio Development Server
5) Check Auto Assign Port radio button
6) Uncheck NTLM Authentication and Enable Edit and Continue

I hope this time will work for you. Good luck and enjoy this tutorial.

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