Fix Adobe Acrobat Pro Freezing When Creating Digital Signature on Mac
Question details
Users experience crashing or freezing issues in Adobe Acrobat Pro DC on macOS when trying to generate or apply a digital signature.

- Product
- Adobe Acrobat Pro DC
- Device & OS
- macOS
- Scenario
- Creating or applying a certified digital signature to a PDF document.
- Observed behavior
- The application displays a black or blank image instead of opening the signature file and becomes entirely unresponsive, requiring the user to force-close the software.
Ensure your Mac has a stable internet connection to download any necessary software updates, and save all open documents in other applications to prevent data loss if a system restart is required.
Update Adobe Acrobat Pro DC to the Latest Version
Running an outdated version of Acrobat can cause compatibility issues with macOS, leading to freezes during complex tasks like rendering digital signatures.
Software updates often contain crucial bug fixes and optimization patches for macOS. Ensuring your Adobe Acrobat Pro DC is fully up to date is the most effective way to resolve persistent freezing issues.
Open Adobe Acrobat Pro DC, navigate to the top menu bar, and click 'Help' followed by 'About Acrobat' to check your current build version.
Go to 'Help' in the top menu and select 'Check for Updates' to prompt the application to scan for the latest available patch.
Follow the on-screen prompts to install the downloaded update, then completely restart your Mac before attempting to digitally sign a document again.

Reset Adobe Acrobat Preferences to Default Settings
Corrupted preference files can cause unexpected black screens and freezing when triggering the digital signature module.
Test the Digital Signature in a New Mac Admin Profile
Testing in a new user profile helps determine if the freezing issue is isolated to your current macOS user account permissions or background processes.
Easily Add Digital Signatures to PDFs with WPS Office
Avoid frustrating freezes and black screens by using WPS Office's built-in PDF editor. WPS Office provides a seamless, lightweight, and highly compatible environment to securely add digital signatures and manage your PDF workflows on macOS effortlessly.
- 1. Open your PDF: Launch WPS Office on your Mac and open the PDF document you need to sign.
- 2. Access signature tools: Navigate to the 'Protect' or 'Insert' tab on the top ribbon and select the 'Sign' or 'PDF Signature' feature.
- 3. Create your signature: Follow the prompt to draw, type, or insert an image of your signature into the tool.
- 4. Place and save: Click exactly where you want the signature to appear on the document page, adjust the size, and save the finalized PDF.

Frequently Asked Questions
Why does Adobe Acrobat show a black screen when I try to sign a PDF on my Mac?
This typically occurs due to corrupted application preferences, an outdated version of Acrobat clashing with a recent macOS update, or conflicting background applications interfering with the signature module's rendering process.
Will resetting Adobe Acrobat preferences delete my PDFs?
No, resetting Acrobat preferences only restores the application's interface and configuration settings to their defaults. Your saved PDF documents, files, and data will remain completely intact on your Mac's storage.
Are digital signatures created in alternative software like WPS Office compatible with Adobe?
Yes, standard digital signatures applied using WPS Office conform to general PDF industry standards. They will be perfectly visible and valid when the document is opened by others in Adobe Acrobat or standard PDF readers.
How do I know if the freezing is caused by a macOS user profile issue?
By creating a fresh administrator profile on your Mac and testing Acrobat there, you bypass any corrupt settings, specific background startup items, or permission glitches tied to your primary user account. If it works in the new profile, your main profile is the root cause.




