Fix Acrobat DC Black Screen When Signing PDFs on Mac
Question details
User needs to resolve an issue where the application displays a black or white screen and freezes when attempting to sign a PDF or apply password security.
- Product
- Adobe Acrobat DC
- Device & OS
- Mac
- Scenario
- Signing a PDF document or applying password security protection.
- Observed behavior
- Acrobat DC displays a black or white screen and becomes completely unresponsive.
Before proceeding, save any open work and check if this issue happens with all documents or just specific ones by testing a locally saved PDF file.
Force Quit Processes and Update Acrobat DC
Clearing hanging background processes and updating to the newest software version can resolve rendering glitches on Mac.
Acrobat DC relies on multiple background processes that can occasionally stall. Forcing these to close and applying the latest updates from Adobe often patches the bugs causing the signing window to turn black.
Open 'Activity Monitor' from your Mac's Utilities folder, locate all Adobe Acrobat processes, select them, and click the 'Stop' (X) button to force quit.
Click the Apple menu in the top-left corner of your screen and select 'Restart' to completely clear your system cache.
Reopen Acrobat DC, go to the 'Help' menu at the top, and select 'Check for Updates' to download and install the latest patches.
Disable Enhanced Security and Protected View
Turn off Acrobat's built-in advanced security restrictions which might be conflicting with macOS window rendering.
Sign and Secure Your PDFs Easily with WPS Office
If Acrobat DC continues to freeze or display a black screen on your Mac, you can easily sign and secure your PDF documents using WPS Office's built-in PDF tools.
- 1. Open PDF in WPS Office: Launch WPS Office on your Mac and open the PDF file you need to sign.
- 2. Access the Signature Tool: Navigate to the 'Fill & Sign' tab or click on the 'Sign' option from the top toolbar.
- 3. Insert Your Signature: Draw, type, or upload an image of your signature, then click to place it anywhere on your document.
Frequently Asked Questions
Why does Acrobat DC freeze when applying password security?
This happens when the application's dialog window fails to render, often due to a bug in the specific version of Acrobat DC you are running, or a conflict with macOS security processes.
Is it safe to disable Enhanced Security in Acrobat?
Disabling Enhanced Security removes some restrictions designed to block potentially malicious PDF actions. It is safe as a troubleshooting step, but you should only open trusted, locally saved PDFs while it is turned off.
How else can I sign a PDF if Acrobat won't work?
You can use your Mac's built-in Preview app to insert a signature, or download a dedicated PDF suite like WPS Office to sign and encrypt documents reliably without black screen errors.
