Fix Acrobat Digital Signing Doing Nothing After Certificate Selection
Question details
The user is unable to digitally sign a PDF because the software becomes unresponsive or fails to process the action after selecting a digital certificate.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Attempting to digitally sign a PDF document using an imported or self-signed certificate.
- Observed behavior
- The application does nothing and fails to apply the signature after the user selects a certificate from the digital ID list.
Ensure that your PDF application is updated to the latest version and verify that your digital certificate or smart card has not expired.
Verify Certificate Trust and Registration
Ensure the digital certificate is correctly imported and trusted within the application's specific identity settings.
Digital signatures require the certificate to be explicitly trusted for signing by the application. If a certificate is stored in the wrong system store or lacks trust permissions, the signing process may silently fail.
Launch Adobe Acrobat, click on 'Edit' in the top menu, and select 'Preferences'. Navigate to the 'Signatures' category on the left panel.
Under the 'Identities & Trusted Certificates' section, click the 'More' button to open the digital ID manager.
Select 'Digital IDs' on the left. Find your certificate in the list, click on it, and select 'Certificate Details'.
Navigate to the 'Trust' tab and ensure the certificate is authorized for 'Sign Documents'. If not, add it to the trusted identities and apply the changes.

Recreate the Self-Signed Certificate
If using a self-signed certificate, creating a new digital ID can resolve hidden corruption or compatibility issues.
Sign and Manage PDFs Effortlessly with WPS Office
If you frequently encounter unresponsive software or complex certificate errors when trying to sign documents, consider switching to WPS Office. Its built-in PDF toolkit offers an intuitive, stable, and lightweight environment to add digital signatures, fill forms, and edit standard PDF files without the hassle.

Frequently Asked Questions
Why does my PDF reader freeze when I click the signature field?
This usually happens if the application is attempting to verify a certificate stored on a disconnected smart card, a restricted network location, or a corrupted Windows Certificate Store. Removing obsolete certificates often resolves the freezing.
Can I use the Windows Certificate Store for my digital signatures?
Yes. Most PDF readers, including Acrobat, can integrate with the Windows Certificate Store. You can enable this in Preferences > Signatures > Verification by ensuring Windows Integration is checked for validating signatures.
What happens if my self-signed certificate is not trusted?
If your self-signed certificate lacks trust, the software may prevent you from applying the signature, or it will display a 'Signature validity is unknown' warning to anyone who opens the document later. You must manually add self-signed certificates to your trusted identities.




