### Try any of the following fixes....

1. **Clean + Rebuild Solution**
2. **Restart Visual Studio**
3. **Run Visual Studio as Admin**
4. **Restart Computer**
5. **Launch Without Debugging**
 <kbd>Ctrl</kbd> + <kbd>F5</kbd>

6. **Step Into Debugging** 
 Hit <kbd>F11</kbd> to start debugging by stepping into the first line of executed code. If that works, the problem is likely in your code somewhere (possibly an *ehem* StackOverflow Exception)

 [![Step Into][1]][1]

 [![Breakpoint on Application_Start][2]][2] 


7. **Break on CLR Exceptions** 
 If there is a problem with the code on startup, you should break when thrown 
 Go to Debug > Windows > Exception Settings (<kbd>Ctrl</kbd> + <kbd>Alt</kbd> + <kbd>D</kbd>) 
 Select `Common Language Runtime Exceptions`

 [![Exception Settings][3]][3]

 [![Common Language Runtime Exceptions][4]][4] 


8. **Change Project Port** 
 Go to Project > Properties > Web > Project URL 
 Try using **`8080`**, but any change might work

 [![Web Settings > URL > Port][5]][5] 


9. **Create Virtual Directory** 
 In the above screenshot, select `Create Virtual Directory` to the right of the Project Url 

10. **Delete `.vs` folder** 
 Open the Directory where the solution / project lives. 
 Make sure *hidden* file are visible, and delete the `.vs` folder

 [![Delete .vs folder][6]][6] 


11. **Restart IIS Express** 
 In the system tray, right click on IIS Express and select Exit

 [![Exit IIS Express][7]][7] 


12. **Enable 64 Bit IIS Express** 
 ***If** you're on a 64 bit machine*... 
 Go to Tools > Options > Projects and Solutions > Web Projects 
 Select `Use the 64 bit version of IIS Express...` 
 

 [![Use the 64 bit version of IIS Express][8]][8] 

13. **Check Event Viewer** 
 Check for any additional diagnostic information in Event Viewer under Windows Logs > Application

 [![Event Viewer][9]][9]

 [![Windows Logs > Application > IIS Express][10]][10] 

14. **Run IIS Express from cmd line** 
 You can rule out if there's an issue with Visual Studio or your Web Project itself. 
 Here's the docs on [Running IIS Express from the Command Line][11] 
 Pass in the path to the root of your project (where the web.config) is located

 ```bash
 > "C:\Program Files (x86)\IIS Express\iisexpress.exe" /path:C:\repos\project\
 ```
 

15. **Download IIS Express** 
 Get the standalone installer for [Internet Information Services (IIS) 10.0 Express][12] and try again 

16. **Disable Edit and Continue** 
 Go to Project > Properties > Web > Debuggers 
 Deselect `Enable Edit and Continue` although this will remove that functionality

 [![Disable Edit and Continue][13]][13] 

### Further Reading: 

* [ASP.NET MVC5/IIS Express unable to debug - Code Not Running][14]
* [IIS Express crashes when starting a site from visual studio][15]
* [Unable to launch IIS Express Web server][16]


 [1]: https://i.stack.imgur.com/LDQJO.png
 [2]: https://i.stack.imgur.com/pdWja.png
 [3]: https://i.stack.imgur.com/KPs8R.png
 [4]: https://i.stack.imgur.com/cpjCc.png
 [5]: https://i.stack.imgur.com/F7LSt.png
 [6]: https://i.stack.imgur.com/0kMOn.png
 [7]: https://i.stack.imgur.com/V5Cg6.png
 [8]: https://i.stack.imgur.com/j6UG0.png
 [9]: https://i.stack.imgur.com/0sxyb.png
 [10]: https://i.stack.imgur.com/Opl08.png
 [11]: https://learn.microsoft.com/en-us/iis/extensions/using-iis-express/running-iis-express-from-the-command-line
 [12]: https://www.microsoft.com/en-us/download/details.aspx?id=48264
 [13]: https://i.stack.imgur.com/zIO4f.png
 [14]: https://stackoverflow.com/q/19472682/1366033
 [15]: https://stackoverflow.com/q/30406261/1366033
 [16]: https://stackoverflow.com/q/45480722/1366033

When running my solution in debug mode, IIS Express and Internet Explorer as the browser, I get the following error: 

```none
The program '[12604] iisexpress.exe: Program Trace' has exited with code 0 (0x0).
The program '[12604] iisexpress.exe' has exited with code 0 (0x0).
```

I'm using Visual Studio 2017.  If I change to Chrome, I do not get this. 

The only way to resolve this and still use IISExpress and IE is to go into my properties of the web project and uncheck **Enable Edit and Continue** under Debuggers.  

Any idea as to why? 