The page appears when a viewer that cannot run XFA opens a form that depends on it. Download the PDF and open it in Adobe Acrobat Reader, which is what USCIS itself recommends.[1] Many government forms are hybrids that also carry a standard form layer, and those do open elsewhere, with caveats.
The message is common enough that people search for its exact words: Google autocomplete completes “please wait if this message is not” with “please wait if this message is not eventually replaced by the proper contents of the document”.[4] It is not an error in your file. It is placeholder text that the form’s author put on the page for viewers that cannot draw the real form.
01What XFA is
PDF forms come in two technologies. AcroForm is the standard form layer that almost every viewer understands: fields sit on top of fixed pages. XFA (XML Forms Architecture) is an Adobe technology that stores the form as XML inside the PDF, with its own layout and scripts. A fully dynamic XFA form has no real pages until a viewer that understands XFA builds them, so other viewers show only the placeholder.
Many agencies ship hybrid forms: the PDF carries both an XFA package and an ordinary AcroForm layer. Those open in most viewers, because the AcroForm layer is there to draw. That is why most IRS and USCIS forms display in a browser even though they contain XFA.
| File | PDF version | XFA package | AcroForm layer | Opens without XFA support |
|---|---|---|---|---|
| IRS fw9.pdf (Rev. March 2024)[5] | 1.7 | Yes | Yes | Yes (hybrid) |
| USCIS i-765.pdf (08/21/25)[6] | 1.7 | Yes | Yes, encrypted with an empty password | Yes (hybrid) |
Method: opened each file with pypdf, read the catalog’s AcroForm dictionary and its XFA entry, and checked for the NeedsRendering flag that marks a dynamic-only form. Neither file sets it.
02Why hybrid forms still misbehave
A hybrid opens, but the two layers can drift apart. A viewer that fills only the AcroForm layer leaves the XFA copy of your answers stale, and the form’s scripts (which copy a name into page headers, check formats or calculate totals) do not run. People then report fields that will not take typing, or answers that vanish after saving and reopening. USCIS is direct about the software it designs for: “USCIS forms are optimized for Adobe Acrobat Reader version 10.0 or higher (PDF Version 1.7) to ensure full compatibility. Using other PDF software may not support the latest PDF features required to properly complete and submit your form.”[2]
A form that displays is not the same as a form that saves correctly. For USCIS filings, the agency’s own advice is to fill in Acrobat Reader, not in the browser.
Our reading of [1]
03What to do
- Download, then open in Acrobat Reader. USCIS: “For the best results, we suggest you download the PDF to your computer and complete the form using the latest version of Adobe Acrobat Reader rather than completing the PDF through your web browser.”[1] The I-765 instructions say the same.[3]
- File online if the form allows it. Many USCIS forms can be completed inside a USCIS online account, which avoids the PDF entirely; USCIS lists them on its online-filing page.[2]
- Check what you have. Our form field inspector shows, in your browser, whether a file has XFA, an AcroForm layer, read-only fields or encryption, so you know what you are dealing with before you type.
- Do not “flatten” or convert an agency form to get around XFA. A re-generated look-alike is not the official form, and stripping the XFA layer can break the scripts and barcodes the agency relies on.
On pdfnex, IRS forms such as the W-9 can be filled in the browser because they have no read-only fields and the form is filled with proper appearance streams. USCIS forms get our fill only after the output passes a round-trip test in Acrobat Reader; until then their pages point you to the filing channels USCIS offers.
This guide explains PDF form technology and quotes agency guidance. It is not legal or tax advice. pdfnex is not affiliated with the IRS, USCIS or any government agency.