Auth0 400 Bad Request Callback error on Login

[alex47]

This solved my problem:

Chrome actively hides www’s in domain names, and my redirect url never has a www.

Callback fails with 400 in nextjs application

Hi, I have a nextjs application that I set up using this quickstart guide Auth0 Next.js SDK Quickstarts: Login I have a strange issue where when run locally everything is fine, but in production I am getting a consistent 400 error. I have uploaded a HAR file, I can see that the auth_verification cookie is not set (it is set when I run this locally) - what am I missing here? I also notice that Referer is set to https://www.telloshq.com which is odd, we don’t have a www subdomain. How is that b…