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Fix Acrobat Scanning Error -16800 and Scrolling Issues on iPad Pro
Question details
Users are experiencing document scanning failures, app crashes during batch scans, and unresponsiveness when scrolling while commenting in single-page mode.
- Product
- Adobe Acrobat / Acrobat Reader
- Device & OS
- iPadOS
- Scenario
- Scanning physical documents to PDF and navigating between pages while actively adding comments to the document.
- Observed behavior
- The app displays 'Unable to capture image. An unknown error occurred (-16800)' during scanning, crashes during batch scans, and fails to register two-finger scrolling to the next page.
Check your iPad's home screen or the App Store to confirm whether you have Adobe Acrobat Reader (free) or Adobe Acrobat Pro (paid) installed, as their capabilities differ significantly.
Verify App Capabilities and Seek Specialized Forum Support
Adobe Reader does not support PDF creation via a scanner; you must use Acrobat Pro. For specific bugs like error -16800, directing your issue to the correct specialized Adobe forum is required.
When dealing with unexpected app crashes or specific error codes like -16800 on iPadOS, ensuring you are using the correct software version is the first critical step. Adobe separates its community support into specialized forums to better address distinct feature bugs.
Open your app and check the settings to see if you are using 'Adobe Acrobat Reader' or 'Adobe Acrobat Pro'. Reader cannot create PDFs from a scanner.
Note down your exact iPadOS version by going to Settings > General > About, and find your exact Adobe app version in the app's settings menu.
Navigate to the official Adobe Acrobat Scanning support forum online and create a post detailing the '-16800' error and batch scanning crashes.
For the two-finger scrolling bug during single-page commenting, submit a detailed report to the Adobe Acrobat Commenting forum, including your exact reproduction steps.
Scan and Annotate PDFs Smoothly with WPS Office
Avoid frustrating crashes and scanning errors on your iPad. WPS Office includes a robust built-in document scanner and smooth PDF annotation tools, allowing you to capture, read, and comment on PDFs without lag.
- 1. Open WPS Office on iPad: Launch the WPS Office app on your iPad and tap the '+' icon at the bottom of the screen to create a new file.
- 2. Scan Document to PDF: Select the 'Scanner' tool to activate your iPad's camera. Capture your physical documents; WPS will automatically align, crop, and convert them into a single PDF file.
- 3. Read and Annotate: Open your newly created PDF, select the 'Comment' tab, and use intuitive touch gestures to scroll smoothly across pages while adding highlights and text notes.
Frequently Asked Questions
Why can't I scan documents using Adobe Acrobat Reader on my iPad?
Adobe Acrobat Reader is primarily a free PDF viewer and does not include the feature to create PDFs directly from a scanner or camera. You need the paid Adobe Acrobat Pro application to scan physical documents into PDFs.
What does error code -16800 mean in Adobe Acrobat?
Error -16800 on iPadOS typically indicates an image capture failure or a camera permission glitch within the app. Updating the app, restarting the iPad, or reinstalling the application may help reset camera permissions and resolve the conflict.
How do I scroll to the next page when commenting in single-page mode?
If the two-finger scrolling gesture is unresponsive due to a bug in single-page mode, try switching the view mode from 'Single Page' to 'Continuous Scrolling' in your PDF page display settings to bypass the issue while annotating.
