You are trying to OCR a document that is already text-based. OCR only works on scanned images (pixels). Run File > Prepare > Optimize Scanned Pages first.
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Nitro Pro 12.16.9.574 acts as a critical legacy build for activating older Nitro perpetual licenses (versions 6–12) following the retirement of previous activation servers. This version is necessary for repairing activation issues, with specific offline installers recommended over web-based alternatives. Find community-supported installation files for this legacy version in the Nitro Community Forums . activation old nitro pro 11 serial in win10 x86 You are trying to OCR a document that is already text-based