Fix Epson ES400 Scanner Unrecoverable Error in Acrobat on Mac
Question details
The user needs to resolve an error preventing them from scanning documents directly from an Epson ES400 scanner into Adobe Acrobat Pro on macOS Mojave.
- Product
- Adobe Acrobat Pro
- Device & OS
- macOS Mojave
- Scenario
- Scanning a physical document directly into a PDF application using third-party hardware.
- Observed behavior
- The scanner functions correctly with Epson software and Mac Preview, but triggers an 'An unrecoverable error has occurred. Operation stopped' message when initiated within Adobe Acrobat Pro.
Ensure your Epson ES400 scanner is properly connected to your Mac, powered on, and functions correctly in Apple's built-in Preview app before modifying Acrobat settings.
Update Drivers, Software, and macOS Permissions
Outdated scanner drivers, pending Acrobat updates, or missing disk access permissions in macOS Mojave often block communication between the scanner and Acrobat.
macOS Mojave introduced stricter privacy controls that require specific permissions for apps to access external hardware. Adobe Acrobat relies on up-to-date TWAIN/ICA drivers to interface with scanners.
Open Adobe Acrobat Pro, navigate to the 'Help' menu in the top toolbar, select 'Check for Updates', and install any available patches.
Visit the official Epson support website, search for the ES400 model, and download the latest ICA and TWAIN scanner drivers specifically designed for macOS Mojave. Run the installer and restart your Mac.
Click the Apple menu, go to 'System Preferences' > 'Security & Privacy' > 'Privacy' tab. Select 'Full Disk Access' and ensure Adobe Acrobat Pro is checked.
Scan via Epson Software or Mac Preview (Workaround)
If direct integration remains broken, use your Mac's native scanning capabilities or Epson's dedicated software to scan documents, then convert them to PDF.
Create PDFs from Scanned Images with WPS Office
Bypass Acrobat's scanning integration errors entirely. Scan your documents using your default Mac software, then easily convert, merge, and edit those scanned images using WPS Office's powerful PDF toolkit.
- 1. Open WPS Office PDF Tools: Launch WPS Office and navigate to the 'PDF' tab on the main home screen.
- 2. Select Picture to PDF: Click on the 'Picture to PDF' tool located in the main PDF toolkit menu.
- 3. Import Your Scans: Drag and drop the images you scanned using your Epson software or Mac Preview into the conversion window.
- 4. Convert and Save: Adjust the page layout if necessary, then click 'Convert' to instantly generate and save your new PDF document.
Frequently Asked Questions
Why does my Epson scanner work with Mac Preview but not Adobe Acrobat?
Apple Preview uses native macOS ICA drivers seamlessly, while Adobe Acrobat often relies on different TWAIN plugins or specific driver integrations that may conflict with the security protocols in macOS Mojave.
How do I fix the 'Unrecoverable error' when scanning on a Mac?
This error is typically resolved by downloading the latest scanner drivers from the manufacturer's website, updating your PDF software, and granting the application Full Disk Access in your Mac's Security & Privacy settings.
Can I turn a JPEG scanned by Epson software into a PDF?
Yes. You can scan the document as a JPEG using the default Epson software, then open the image in a PDF editor like WPS Office or Adobe Acrobat and use the 'Picture to PDF' or 'Create PDF' feature.
