Hello Brian,

Yes, this is generally possible in Odoo.

A 404 error for non-logged-in users usually indicates that the form page, route, or related access permissions are restricted to authenticated users. You'll want to review the website page visibility and ensure the form is accessible to the Public user group.

If this is a custom form, also check whether the underlying controller or model access rights require user authentication, as that can cause anonymous visitors to receive a 404 response.

Hope this works for you! If you need any help implementing this or want a more optimized approach, feel free to reach out for further discussion.

Regards,

Zehntech Technologies Inc.

santosh.sekwadia@zehntech.com

Most likely one of the two things:

First check: is the page published? Open the page as editor and look for the Published / Unpublished toggle. Flip it to Published and test in a private/incognito window where you're logged out.

If it's published and still 404s check public access to the underlying model. This applies if the button leads to a custom form/page rather than a standard website form snippet. 

If that's the case, you grant the public group access to the model(s) the form uses from Settings → Technical → Security → Access Rights (with developer mode on), add a rule for the Public group on the relevant model.

Let me know if either of those work.