Fix Adobe Acrobat Redaction Creating Gray Background or Blank Box
Question details
The user is unable to redact a PDF document because the application hangs, displaying a gray background and a blank white box instead of applying the redaction normally.
- Product
- Adobe Acrobat DC
- Device & OS
- macOS and Windows
- Scenario
- Attempting to apply a redaction to permanently hide sensitive information within a PDF document.
- Observed behavior
- Instead of completing the redaction, the software freezes and shows a gray background with a blank white box, which is a known regression in specific versions like 2021.001.20155.
Make sure to download any network-hosted PDF files to your local hard drive before editing, and save a backup copy to prevent data loss if the application freezes.
Reset Adobe Acrobat Preferences
Corrupted preference files can cause Acrobat's redaction tool to freeze or glitch. Resetting them forces the application to rebuild fresh, error-free settings.
Application preferences can become corrupted over time or after a system update, leading to unexpected behavior in complex tools like redaction. Resetting these preferences is a safe and standard troubleshooting step.
Ensure Adobe Acrobat is completely closed. On macOS, right-click the Acrobat icon in the Dock and select Quit.
On macOS, navigate to your user Library folder (~/Library/Preferences/Acrobat/DC). On Windows, open the AppData folder (C:\Users\[Username]\AppData\Roaming\Adobe\Acrobat\DC).
Move the 'DC' folder to your desktop as a backup, or delete it entirely to remove the old preference configurations.
Open Adobe Acrobat again. The application will automatically generate new preference files. Try applying a redaction to a local PDF to see if the blank box issue is resolved.
Revert to a Previous Acrobat Version
Since the blank box issue is a known regression in specific updates (such as version 2021.001.20155), downgrading to a previously stable release can bypass the bug.
Test with a New Administrator Profile
Creating a new user profile helps determine if the redaction freeze is caused by hidden OS-level permission restrictions or a corrupted user account.
Redact PDF Documents Safely with WPS Office
If your current software continually freezes or glitches during crucial document tasks, switch to WPS Office. Its built-in PDF editor offers a stable, lightweight, and intuitive environment to safely redact sensitive information without the gray background errors.
- 1. Open the PDF in WPS Office: Launch WPS Office, select 'PDF Edit', and open the document you need to redact.
- 2. Access the Redaction Tool: Navigate to the 'Protect' tab on the top ribbon menu and click on the 'Redact' button.
- 3. Select Text or Areas: Click and drag your cursor over the sensitive text, images, or specific areas you want to completely hide.
- 4. Apply Redactions: Click 'Apply Redactions' to permanently remove the underlying data from the document and save your newly secured PDF.
Frequently Asked Questions
Why does Adobe Acrobat show a blank white box when I click redact?
This is often a known software regression (bug) found in specific release versions, such as 2021.001.20155. It can also be triggered by corrupted preference files, conflicting fonts within the PDF, or attempting to redact a file directly over a slow network connection.
Does redacting a PDF on a network drive cause freezes?
Yes. Editing complex elements or redacting directly on a shared network drive can cause latency, leading to application hangs or the gray background error. Always copy the file to your local computer first, apply the redaction, and then upload it back to the network.
How do I know if the PDF file itself is causing the redaction error?
To isolate the issue, create or download a brand new, plain-text PDF file to your local hard drive. Open it in Acrobat and apply a redaction. If it succeeds without the blank white box, the original PDF likely contains corrupted elements, locked security settings, or unsupported fonts.
