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Access_denied 403


I built in Auth0 to single page application.
I could signed up without problem, but I couldn’t login this account for the following Error
status code:403 access_denied.

my application work on so I input in the Allowed Callback URLs field.

I’ll appreciate if someone could give me some advice.


Hi stando,

I would start with the logs:



Hi Jone,

Thank you for your advice.

My app Failed by CORS

“description”: “Origin is not allowed. Behavior used for check: WEB ORIGINS”

Do you know what I should do to solve it??


Hey there @stando! Do you have URLs populated in both the app’s Allowed Web Orgins and Allowed Callback URLs? Here’s a doc that dives into setting up a web application in Auth0. Thanks!