How to return correct response on error in ASP.NET MVC 3.0 via JSON?

Question

I\'m struggling to resolve this problem. On my local machine (Win7/VS2010/IIS 7.5) and another identical developer\'s machine, the following code returns the 500 status code, an

Answer 1

Looks like IIS is eating the response and trying to do it's custom error stuff with it.

Try setting

Response.TrySkipIisCustomErrors = true

in your catch.

Alternatively set the following config value:

<httpErrors errorMode="Custom" existingResponse="PassThrough"/>