Problems with cfpdfform

@stephenlIU : I created a fillable form with Adobe. 

How? 

Such changes don't happen without SOMETHING causing them. I realize you think nothing has changed in your code or the PDF. Assuming that's really so, there could be changes in the cf config, the web server config, and more (even on the client end) which could be impacting things. 

As a sanity check, try creating a simple new cf page, with just the least needed to show the PDF. Does it render in portrait? If so, then something in your failing page would seem to be causing the landscape, though "nothing changed". Add things to model what is in the failing page (regarding the pdf handling only), until it renders in landscape. 

If nothing you do gets it in portrait mode, then you know it's not the code. You may then want to open the PDF in a browser on the server (directly, as a file) to make sure it IS portrait. Don't do it from off the server, or via a url while on the server, to ensure nothing but the PDF is impacting its display (no cf, no webr server).

Let us know how it goes. Or maybe someone else will offer a better answer.