Request Failed with Status Code 404

Problem statement

Authentication fails with the following error (both on local and server-deployed apps):


  • No changes had been made before the error started
  • All client configurations look good


Sometimes, Action configuration causes the issue.

  1. Check Auth0 Dashboard > Monitoring > Logs > Select a log with Type: Failed Login (f), click the “Action Details” tab, and see if there is the “Error” icon shows up.
  2. If the “Error” icon is displayed in step 1, disable the Action, login to the application, and see if the issue still persists.


A problematic part of the Action prevents successful login.


Update a problematic part of the Action using the troubleshooting steps referenced above.