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.
- 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.
- 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.