My in-house Python + PyQt5 utility still reads the three Excel spreadsheets perfectly, but after today’s Windows and Adobe Acrobat Pro update it stalls at the critical step: placing data onto the two PDF forms. All form fields remain empty—no error messages, just silent failure across every field. I will provide: full source code, sample spreadsheets, the locked and unlocked PDFs, and a quick walkthrough video of the expected result. Your mission is to trace whatever change in Acrobat, its COM interface, PyPDF2 (or the equivalent module I am using), and adjust the code so the forms are filled again on the most recent Windows and Acrobat Pro build. Environment • Windows 10/11, fully patched • Adobe Acrobat Professional, latest update • Python 3.x with PyQt5 GUI Deliverables - Updated Python script (and any helper modules) that reliably populates every form field in both PDFs. - Clear setup instructions or requirements.txt so I can run it on a fresh machine. Acceptance criteria Running the revised script on a clean install with today’s Acrobat build must read the same three spreadsheets and output completed PDFs identical to the originals, with all fields correctly filled. If you have a quick workaround or a longer-term suggestion—such as moving away from Acrobat’s API to a pure-Python PDF library—let me know, though the immediate goal is getting our existing workflow back online.