How to Fix Adobe Acrobat Pro DC Crashing During OCR
Question details
The user experiences software crashes when attempting to run Optical Character Recognition (OCR) on PDF files.

- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Running the OCR tool to recognize text in a scanned PDF document.
- Observed behavior
- The application unexpectedly crashes, freezes, or closes entirely during the OCR process.
Save any other open documents and close background applications to free up system memory, as the OCR process can be highly resource-intensive. Ensure you have a backup copy of the problematic PDF file ready for testing.
Update Acrobat and Troubleshoot Security Settings
Ensure you are running the latest version of Acrobat and temporarily disable security sandbox features that might block the OCR process.
Software bugs or conflicts with Acrobat's sandbox protections can interrupt resource-heavy tasks like OCR. Updating the software and isolating these security settings can help identify the root cause.
Open Adobe Acrobat, click on 'Help' in the top menu bar, and select 'Check for Updates'. Install any pending updates and restart the application.
Navigate to 'Edit' > 'Preferences' (or 'Acrobat' > 'Preferences' on Mac) and select the 'Security (Enhanced)' category from the left pane.
Under Sandbox Protections, uncheck 'Enable Protected Mode at startup' and turn off 'Enhanced Security'. Click 'OK' to save the changes.
Restart Acrobat, open your PDF file, and attempt to run the OCR tool again to see if the crash is resolved.

Isolate and Repair File-Specific Issues
Determine if the crash is caused by a damaged, overly large, or complex PDF file rather than the software itself.
Perform OCR Flawlessly with WPS PDF
If your current PDF software continues to crash during text recognition, WPS Office offers a stable, lightweight, and highly accurate PDF editor with built-in OCR capabilities. Extract text from scanned documents seamlessly without freezing your system.
- 1. Open PDF in WPS: Launch WPS Office and open your scanned PDF document using the WPS PDF tool.
- 2. Access the OCR Tool: Navigate to the 'Tools' tab on the top ribbon and click the 'OCR' button.
- 3. Select Extraction Mode: Choose whether to extract the text to a plain text document, a Word document, or an Excel spreadsheet based on your needs.
- 4. Start OCR Processing: Click 'Extract' or 'Convert' to process the document. WPS will quickly recognize and output the editable text.

Frequently Asked Questions
Why does OCR cause PDF software to crash?
OCR is a memory-intensive process. Software may crash due to insufficient system RAM, overly complex document layouts, extremely high-resolution images, or corrupted file data that the OCR engine cannot parse.
Can a corrupted PDF be repaired before running OCR?
Yes. You can try printing the corrupted PDF to a new PDF file using a virtual PDF printer (like 'Microsoft Print to PDF' or 'WPS PDF'), which often strips out corrupted underlying metadata and creates a clean file ready for text recognition.
Does the file size affect the OCR process?
Absolutely. Large files with hundreds of scanned pages require significant processing power and temporary storage space. If your software crashes, try splitting the PDF into smaller 20-50 page chunks and perform OCR on each section individually.




