Sudden "Failed Cross Origin Authentication" with Email/Password Login

Hi there, we’re suddenly experiencing email/password authentication issues on all browsers. No changes were made on our end that could have caused this, not sure why this is happening now.

Below is the error log:

“Failed Cross Origin Authentication”
“date”: “2020-07-25T07:35:04.073Z”,
“type”: “fcoa”,
“description”: “Unknown or invalid login ticket.”,
“connection_id”: “”,
“ip”: “”,
“user_agent”: “Chrome 84.0.4147 / Mac OS X 10.15.6”,
“details”: {
“body”: {},
“qs”: {
“client_id”: “C5PS4GDJXSfqtRV3X9UE4c8UFjC5z2NB”,
“redirect_uri”: “”,
“response_type”: “token”,
“realm”: “Username-Password-Authentication”,
“login_ticket”: “E7S1eaBT2i152ISVgeK3K8Lv5DMM22eS”,
“state”: “TcplDBPzCVvSSOmnvix-LTlOjYCSEdKu”,
“scope”: “openid profile email”,
“auth0Client”: “eyJuYW1lIjoiYXV0aDAuanMiLCJ2ZXJzaW9uIjoiOS4xMi4yIn0=”
“connection”: “google-oauth2”,
“error”: {
“message”: “Unknown or invalid login ticket.”,
“oauthError”: “access_denied”,
“type”: “oauth-authorization”
“session_id”: “kBzfM8SlIGnC9BkC9QCOJ3Ok0_0VnRuJ”
“hostname”: “”,
“auth0_client”: {
“name”: “auth0.js”,
“version”: “9.12.2”
“log_id”: “90020200725073506717000064913363855056872558100442251346”,
“_id”: “90020200725073506717000064913363855056872558100442251346”,
“isMobile”: false

Hey there @feeohnah, I apologize for the delay in response.

Following up on the cross origin issue you were experiencing to see you if you would be able to snag us a HAR file capture of the login attempt and direct message it over to me? Also, have you had a chance to look into the Universal Login experience as an alternative? Thanks in advance!

Thanks James, we’ve already built and deployed our own auth and are happy with this solution for now.

No problem @feeohnah, please let us know if we can be of any help in the future!

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