Catastrophic failure when publishing an InfoPath form

Question

I have a TeamSite on SharePoint (Office 365) and used to manage all my forms using InfoPath. Since a couple of days ago, when I create any NEW list, open the form on InfoPath Designer 2013 and try to publish, I receive the following error (even if I try directly to publishing the form without any changes):

“The publish operation could not be completed. It cannot be determined if the form template was successfully published. Try publishing the form template again, or change the list settings to use the default SharePoint form. Catastrophic failure”

However, if I try the same procedure on OLD lists (on the same SharePoint site), it works perfectly.

Any idea what might be happening?

Answer 1

InfoPath custom form support was removed from SharePoint Online. You'll need to use the out of the box SharePoint form or customized with Power Apps.

If you go to the List/Library Settings -> Form settings, you'll see InfoPath was removed.

Answer 2

I do not believe that is correct. We are on SP Online and still have the option to customize forms using InfoPath but it no longer works when we try to publish in new lists. Existing lists that have previously been customized do still work. I think MS broke something.