I have a C# project that was initially created by VS2013. I open it in Xamarin and it builds fine, the executable file is created and can be started from outside Xamarin.

But if I try to start it with Run->Start Debugging, it shows this error:

```
Debugger operation failed
The request is not supported. (Exception from HRESULT: 0x80070032)
```

[![enter image description here](https://i.stack.imgur.com/6Xwdf.png)](https://i.stack.imgur.com/6Xwdf.png)

The only similar question I found was for F# - [Debugging F# in Xamarin Studio 4.0.3 throws an error](https://stackoverflow.com/questions/16215690/debugging-f-in-xamarin-studio-4-0-3-throws-an-error), and they suggest it is because the project is 64-bit, but I'm not sure if this applies to C# as well.

How can I fix this error?