Requests for referrer are blocked when trying to sign in anonymously to Firebase

Question

I’m trying to sign in anonymously from a Web app using the JS SDK and it works great on some environments, but on one environment, the exact same code that’s working elsewhe

Answer 1

It seems like you have set some referrer restrictions on your API key. You need to go to the Google Cloud Console and modify these restrictions on your API key.

Answer 2

To make it work I've added the following "website restrictions" for my "Browser key":

• https://www.googleapis.com/
• https://firebaseinstallations.googleapis.com/