OCR fail

OCR Failure is mostly due to low quality tool or image used for image to text conversion. Here are some tips to avoid OCR failure:

1. Use high-quality scans: To avoid OCR failure, use high-quality scans of the printed or handwritten text. This means using a scanner with a high resolution and ensuring that the text is clear and legible.

2. Use a clean, clear font: When creating digital text, use a clean, clear font that is easy for OCR technology to recognize. Avoid using decorative or unusual fonts that may be difficult for OCR to interpret.

3. Use high contrast: To ensure that the OCR technology can accurately recognize the text, use high contrast between the text and the background. This means using dark text on a light background or light text on a dark background. One of the best resource is ETTVI’s image to text conversion.

4. Use straight text alignment: To avoid OCR failure, align the text horizontally and vertically as straight as possible. Avoid text that is slanted, skewed, or rotated.

5. Edit the OCR results: After the OCR process, review the results carefully and make any necessary corrections. OCR technology can sometimes misinterpret characters, so it's important to check the converted text for accuracy.

I think the latest version of Adobe products have a better OCR but in case it's not working right for you, You may go for a third-party OCR tool like Prepostseo 

This is going to sound strange but I'd suggest that you bypass the front and middle man here and just scan the documents, save them, and then have Acrobat convert them to PDF at your convenience.

Here's the deal: Acrobat has no scanning capability whatsoever. What it does have is access to Twain which is a plugin that lets Acrobat have access to your scanner's software. What you're witnessing is the tenuous hold on how well your computer, your computer's OS, Acrobat, and Twain have with that software. Most of the time it works but when it doesn't you get the crashing that you're getting. 

I'm a Mac guy so I cannot make any suggestions on what can be done to fix it but there are times when you have to make a choice as to whether you get the job done or get the job done the way you think it should be done. FWIW, I have not tried to scan from within Acrobat for some 20+ years.

If you follow my here, what you do is to scan your pages into a folder on your desktop, then have Acrobat combine those pages into one PDF (while doing all the OCR etc.).

If you need this, here are some guidelines on how to get clean scans for the best OCR:

http://photosbycoyne.com/Gary's_Help/Scanning/clean-scanning.html

Good luck