How to allow download of .json file with ASP.NET

Question

How can I enable the download of *.json files from an old ASP.NET site (IIS6 I am led to believe)?

I am getting a 404 page instead of the JSON file.

Do I nee

Answer 1

When adding support for mimetype (as suggested by @ProVega) then it is also best practice to remove the type before adding it - this is to prevent unexpected errors when deploying to servers where support for the type already exists, for example: