ApiController returns 404 when ID contains period

Question

I have an ApiController and I want to use email addresses as the ID parameter for requests:

// GET api/employees/email@address.com
public CompactEmployee Get         


        

Answer 1

This is what worked for me:

I was running on targetFramework = 4.6.1. I have upgraded to 4.6.2 and added this in web.config:

The requestPathInvalidCharacters="" is to be able to have stuff like & etc in URI, in encoded form, of course.