Why does "Please wait..." appear when I open a pdf from the web?

[cksgh1224]

Attach (recommended) or Link to PDF file here:
https://planeacion.uniandes.edu.co/images/Formatos/Juridica/Solicitud_para_legalizacion_elaboracion_de_un_contrato.pdf

Configuration:

• Web browser and its version:
• Operating system and its version:
• PDF.js version: 2.10.357
• Is a browser extension:

Steps to reproduce the problem:

1. When I open the pdf on the web, the content is not visible.
2. When I open it with Acrobat DC, it looks fine.

What is the expected behavior? (add screenshot)
(Acrobat DC)

What went wrong? (add screenshot)
(web-browser)

I try to reproduce while opening the pdf files with the issue, but many pdfs do not open when I try to open them on the web.
A phrase like "Please wait..." appears. Why is this?

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

[marco-c]

This is a XFA form, we are adding support for this kind of forms in the next version of Firefox.
You can already test it out if you install Firefox Nightly or Firefox Beta.

[cksgh1224]

This is a XFA form, we are adding support for this kind of forms in the next version of Firefox.
You can already test it out if you install Firefox Nightly or Firefox Beta.

So I can't see it in chrome?

[marco-c]

What do you mean exactly? PDF.js is the PDF viewer used in Firefox. Chrome doesn't use PDF.js.

[Snuffleupagus]

Given that this PDF document works in e.g. Firefox Nightly, and the lack of information in the "Configuration:"-section of the ISSUE_TEMPLATE, I'm closing this issue as WORKSFORME.

[cksgh1224]

What do you mean exactly? PDF.js is the PDF viewer used in Firefox. Chrome doesn't use PDF.js.

I was talking about when I accessed the demo site (https://mozilla.github.io/pdf.js/web/viewer.html) from the Chrome browser.

[cksgh1224]

Given that this PDF document works in e.g. Firefox Nightly, and the lack of information in the "Configuration:"-section of the ISSUE_TEMPLATE, I'm closing this issue as WORKSFORME.

It was my first time using it, so I didn't know the format. Sorry

[Snuffleupagus]

I was talking about when I accessed the demo site (https://mozilla.github.io/pdf.js/web/viewer.html) from the Chrome browser.

Well, that wasn't mentioned anywhere in #13781 (comment), making it very difficult (or impossible) to understand what you meant :-)

Given that XFA-support is still under active development, and that there's a bunch of things not implemented yet, it's not enabled by default yet. In the demo viewer you can run PDFViewerApplication.preferences.set("enableXfa", true) in the console and then reload the viewer, which will enable XFA-support; however keep in mind that it's still somewhat experimental!