Issue: You have noticed that the Form Pre-fill feature on your form fields is not working. You have also tested this is a normal browser as well as incognito browse by filling out the test form and then reloaded the landing page again expecting that reloading the landing page will show you a pre-filled form since you have submitted the form already.
Please confirm that you are reaching that page via a link sent in an email.
In April 2019 Form Prefill was updated per this document: https://nation.marketo.com/docs/DOC-6909-form-pre-fill-feature-upgrade
"What change is being made?
Starting April 24, 2019, Marketo will only pre-fill form fields if the URL used to navigate to the Marketo landing page contains a valid mkt_tok URL parameter value (which occurs when users click tracked links in Marketo emails). What that means is, any time a person is viewing a Marketo landing page with a form, the URL being used must contain the mkt_tok token in the query string, otherwise, the form on that landing page will not be pre-filled. If the URL in the browser window does have a valid mkt_tok tracking token, then the form within the page will pre-fill as expected with data corresponding to the person record associated with that mkt_tok."
Solved! Go to Solution.