This tutorial guides through the steps required to debug an asp.net website which is hosted locally on IIS. By following steps mentioned here a user can debug any asp.net site using Visual Studio IDE.

Note: Important point to keep in mind is that visual studio should run as an administrator. To run VS as an administrator right click on it and then select the option Run as administrator as shown below:

Step 1: Make sure the site is running through IIS locally, to run site select the option browse as shown in screenshot below:

Step 2: In visual studio apply the breakpoint where you want to start the debugging. In this tutorial I am running default MVC application and applied breakpoint on Index action of Home Controller.

Select menu Debug and then click on option Attach to process or use keyboard shortcut Ctrl+Alt+P as shown below:

Step 3: In Attach to Process window all the process running on your system would be shown. Make sure to select the check box show processes from all users. Then look for w3wp.exe process as shown in below screenshot. Each website hosted on IIS run under w3wp.exe process:

Step 4: Click on Attach button. Now your asp.net website is ready for debugging , just open the website in browser and try to hit the page where breakpoint is applied. As you open the page where breakpoint is applied debugging will get started as shown below:

Using above steps .net website can be debugged locally which is hosted on IIS. Let me know in comment section if you face any challenge with above steps.