How to Fix Adobe Acrobat 2017 Freezing During OCR or PDF Optimization
Question details
The user experiences application freezes or non-responsiveness when attempting to perform text recognition or optimize file sizes in Adobe Acrobat 2017.
- Product
- Adobe Acrobat 2017
- Device & OS
- Windows
- Scenario
- Running the Optical Character Recognition (OCR) tool or the PDF Optimizer to compress and analyze a document.
- Observed behavior
- Acrobat 2017 stops responding completely or incorrectly reports that a scan is still running in the background, requiring the user to force-close the program via Task Manager.
Before applying any fixes, ensure you have your exact Acrobat build number (e.g., 2017.123.xxxxx) and check whether the freeze happens on all documents or just a specific PDF file.
Identify Version and Check for Updates
Check your exact build number and install the latest patches to resolve known bugs related to OCR and optimization modules.
Software freezes during intensive tasks like OCR are often tied to specific release builds. Adobe frequently releases patches that address memory leaks or scanning module conflicts.
Open Adobe Acrobat 2017, click on 'Help' in the top menu, and select 'About Adobe Acrobat 2017'. Note down the full version number displayed (e.g., 2017.xxx.xxxxx).
Attempt the OCR or optimization process on a completely different, newly created PDF. If it only freezes on the original file, the issue is document corruption rather than the application.
Navigate to 'Help' > 'Check for Updates' to let Adobe search for and install the latest patch for the 2017 version, which may include fixes for the scanning and optimization engines.
Force Quit and Clear Background Processes
If Acrobat claims a scan is still running, end the background process using Task Manager and restart the application as an administrator.
Try WPS Office for Seamless PDF OCR and Optimization
If Adobe Acrobat 2017 continues to freeze and disrupt your workflow, consider switching to WPS Office. WPS Office features a lightweight, highly stable PDF editor that effortlessly handles OCR text recognition and document optimization without heavy system resource drains.
- 1. Download and Install: Download WPS Office Free from the official website and install it on your computer.
- 2. Open Your PDF: Launch WPS Office, click 'Open', and select the PDF file you wish to optimize or recognize.
- 3. Use OCR or Compress: Navigate to the 'Tools' tab to access the 'OCR' feature for text recognition, or use the 'Compress' tool to optimize your file size reliably.
Frequently Asked Questions
Why does PDF optimization freeze at the very end of the process?
This often occurs because the optimizer encounters complex vector graphics, invalid fonts, or corrupted images that it cannot parse. Printing the PDF to a new PDF file (flattening it) before optimizing can sometimes resolve this issue.
Can a very large file size cause Acrobat's OCR to stop responding?
Yes. Running text recognition on a document with hundreds of high-resolution scanned pages can exhaust available system memory, leading to application freezes. Try splitting the large PDF into smaller 10-20 page batches before running OCR.
How do I know if the freeze is caused by my PDF document or the software?
Open a completely blank or standard text-based PDF and run the same OCR or optimization tool. If the process finishes instantly without freezing, your Acrobat software is fine, and the original document is likely corrupted or too complex.
