I am developing a web app and I'm using Firebase for that. Since I do not have a domain name yet, I'm trying to use my localhost. I can see localhost in OAuth redirect domains. Also the initializing part is working fine.

But when I create a user using firebase.auth().signInWithEmailAndPassword it shows [HTTP/2.0 400 Bad Request 447ms] when posting to .

I'm new to web app development and Firebase web as well. Somebody please help me to do this using my localhost.

Thank you

I am developing a web app and I'm using Firebase for that. Since I do not have a domain name yet, I'm trying to use my localhost. I can see localhost in OAuth redirect domains. Also the initializing part is working fine.

But when I create a user using firebase.auth().signInWithEmailAndPassword it shows [HTTP/2.0 400 Bad Request 447ms] when posting to https://www.googleapis.com/identitytoolkit/v3/relyingparty/verifyPassword.

I'm new to web app development and Firebase web as well. Somebody please help me to do this using my localhost.

Thank you

• javascript
• firebase
• localhost

• Can you show the entire function you use to create users? signInWithEmailAndPassword wouldn't you use to create users, but to sign in users already registrered. – hellogoodnight Commented May 20, 2016 at 13:14

1 Answer 1

Updated on Mar 29th, 2024

Please note the following two points when you use createUserWithEmailAndPassword to create a new account:

1. Check if you get auth/weak-password error code when using a weak password (less than 6 chars)
2. Check if you try to use a registered email (Hozayfa and Aakash mentioned)

This password policy performs on updating an existing account's password as well.

See also:

• https://firebase.google.com/docs/auth/web/password-auth

• https://firebase.google.com/docs/reference/kotlin/com/google/firebase/auth/FirebaseAuthWeakPasswordException