Navigate to Applications and Services Logs > Adobe > Acrobat OCR.
Error event ID 4098: "OCR engine failed to initialize. Language pack checksum mismatch."
If the above methods fail, your problem may be system-wide or specific to certain PDFs. Adobe Acrobat Dc Ocr Fix.exe
Check for missing imports. Common missing dependencies: Navigate to Applications and Services Logs > Adobe
Filter on Process Name = Adobe Acrobat DC OCR Fix.exe and Result = ACCESS DENIED or NAME NOT FOUND. Typical findings: If your OCR is broken, follow these legitimate,
Solution: The PDF might be corrupt or password-protected (even if no password is required). Use File > Export To > JPEG to convert the page to an image, then create a new PDF from that image and try OCR again.
Run the built-in repair tool once every few months, even if everything seems fine.
If your OCR is broken, follow these legitimate, safe procedures. They are more effective than any mysterious .exe you might find online.