Universal Login preview not working?

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1

When trying to edit our login page branding, the preview doesn’t seem to respond to any of the color/layout/sizing changes. The zoom, focus, and hover controls also do not seem to work.

I’ve verified:

  • The New Universal Login Experience is enabled
  • There’s no custom templates or html overrides being used for any page
  • I tried with multiple browsers and incognito mode.

It seems like it might be a problem with the Auth0 Dashboard, because none of the preview controls are working at all.

3

Hi @jcaudill

Welcome to the Auth0 Community!

You are asking why the New Universal Login branding preview in the Auth0 Dashboard does not respond to color, layout, sizing, zoom, focus, or hover changes, even though the New Universal Login Experience is enabled and no custom templates or HTML overrides are in use.

Root Cause: The preview is most often blank or unchanged when the Dashboard is opened through the default Auth0 domain while a custom domain is configured for the tenant. The branding editor and the hosted login page then read from different domain contexts, so changes made in the editor do not appear in the preview.

Solution: Open the branding editor through your custom domain, then force the preview to reload.

  1. Open the Dashboard branding editor through your custom domain. If your tenant has a custom domain, sign in at the custom domain URL and navigate to Branding → Universal Login rather than the default *.auth0.com address.
  2. Confirm the custom domain is verified and active under Branding → Custom Domains. A pending or unverified domain prevents the hosted login page from loading the saved branding.
  3. Reload the preview with a hard refresh (Cmd+Shift+R on macOS or Ctrl+Shift+R on Windows and Linux). Then select another application in the Dashboard's application drop-down and return to the editor. The preview can show older content until the page is reloaded.
  4. Test the change on the live hosted login page for the application. Open a new private browsing window and start a login for the application. The live page reflects saved branding even when the preview does not refresh.

Please follow up if the preview remains unresponsive after the custom domain check.

Kind Regards,
Nik

4

I appreciate the response, but I do not have a custom domain configured for my tenant.

5

It’s working now, and I did not change anything. It does seem to have been on Auth0’s end.