: Ensure your Mac meets the system requirements for the version of Adobe Acrobat Pro you're installing.
(Document Cloud) for full 64-bit compatibility and ongoing security updates. Reviewing the Use of "Xf-aaproxi" Tools Xf-aaproxi For Mac Os Sierra Adobe Acrobat Pro
Let me know what specific PDF task you need (edit, OCR, forms, sign, convert), and I’ll recommend a legal, low-cost, or free method that runs on Sierra. : Ensure your Mac meets the system requirements