Fix Adobe Acrobat Crashing When Adding a Second Digital Signature
Question details
The user needs a way to prevent Adobe Acrobat from crashing when applying a second digital signature via a PIV or CAC smart card.
- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Signing multiple fields in a PDF form using smart-card (PIV/CAC) authentication.
- Observed behavior
- The first signature field is signed and saved successfully, but the application crashes immediately upon attempting to sign a second field.
Ensure your PIV or CAC card reader is securely connected to your computer and its drivers are fully up to date before adjusting any software settings.
Update Acrobat and Temporarily Disable Protected Mode
Updating to the latest release and temporarily turning off Enhanced Security often resolves smart-card authentication conflicts.
Adobe Acrobat's security sandboxing (Protected Mode) can sometimes interfere with smart card authentication drivers when processing multiple requests in sequence.
Open Adobe Acrobat, click on 'Help' in the top menu, select 'Check for Updates', and install any available software patches.
Navigate to 'Edit' > 'Preferences' on Windows (or 'Acrobat' > 'Preferences' on Mac) and select 'Enhanced Security' from the left-hand panel.
Uncheck 'Enable Protected Mode at startup' and clear the 'Enable Enhanced Security' checkbox, then click 'OK'.
Restart Adobe Acrobat DC, open your form, and attempt to add the second digital signature using your PIV/CAC card.
Isolate the Issue with a New Blank Form
Testing with a simple, newly created PDF helps determine if the crash is caused by a corrupted form or an application-wide issue.
Add Multiple Digital Signatures Seamlessly with WPS Office
If Adobe Acrobat continues to crash during authentication, you can use WPS Office's built-in PDF editor to securely add and manage multiple digital signatures without performance issues.
- 1. Open Your PDF: Launch WPS Office and open the PDF form that requires multiple signatures.
- 2. Navigate to the Protect Tab: Click on the 'Protect' tab located on the top ribbon of the WPS PDF editor.
- 3. Select Sign Document: Click on 'Sign Document' and choose your digital ID or smart card certificate.
- 4. Apply Multiple Signatures: Place your digital signature in the required fields sequentially and save the document securely.
Frequently Asked Questions
Why does my PDF reader crash when using a PIV/CAC card?
Crashes are frequently caused by conflicts between the application's security sandbox (like Adobe's Protected Mode) and the smart card's authentication drivers. The software struggles to communicate with the card reader multiple times in a single session.
Does disabling Protected Mode make my computer vulnerable?
Yes, disabling Protected Mode removes a layer of security that prevents potentially malicious code within PDFs from executing on your computer. You should only disable it temporarily for troubleshooting digital signature issues and re-enable it immediately after.
How do I share crash logs with Adobe Support?
If the problem persists, you can collect crash logs using the Adobe Crash Reporter or by accessing Windows Event Viewer / Mac Console. You can then submit these logs along with your Acrobat version and workflow details directly to Adobe Support for further investigation.
