Fix Sign Button Grayed Out in Adobe Acrobat
Question details
The user is unable to sign a PDF document in Adobe Acrobat because the Sign button is grayed out and disabled.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Attempting to add a signature to a PDF document.
- Observed behavior
- The Sign button is grayed out and inactive, preventing the user from signing the file.
Test the Sign tool with another PDF document to determine if the issue is specific to one file or a general software glitch.
Request an Unlocked Copy from the Document Owner
The most common reason for a grayed-out Sign button is that a previous signer locked the document after applying their digital signature.
When a user digitally signs a PDF in Adobe Acrobat, they have the option to 'lock the document after signing'. This converts the file to read-only status, preventing any further modifications or additional signatures.
Open the PDF in Adobe Acrobat, navigate to 'File' > 'Properties', and click on the 'Security' tab to confirm if signing is marked as 'Not Allowed'.
Reach out to the original document creator or the person who previously signed the file.
Ask them to provide a fresh, unsigned copy of the document, or to sign it again without checking the 'lock document after signing' option.
Remove Password Security or Permissions
If the document is not digitally signed but has permissions passwords restricting changes, you must remove the security to sign it.
Sign and Manage PDFs Effortlessly with WPS Office
Avoid complicated security restrictions and easily add electronic signatures to your PDF documents using the built-in WPS PDF tool. WPS Office provides a comprehensive, user-friendly suite to edit, sign, and manage PDFs seamlessly.
- 1. Open the PDF: Launch WPS Office and open your PDF document.
- 2. Navigate to Fill & Sign: Go to the 'Fill & Sign' or 'Insert' tab on the top ribbon menu.
- 3. Create your signature: Click on 'Sign' and select 'Create Signature' to draw, type, or upload an image of your signature.
- 4. Apply and save: Place the signature in the desired location on the document and save the file.
Frequently Asked Questions
How do I know if a PDF is locked after signing?
You can check the document's security settings by going to File > Properties and clicking the Security tab. If 'Signing' is listed as 'Not Allowed', the document has been locked by a previous signer or restricted by the author.
Can I unlock a PDF that was locked after signing?
No, if a PDF was digitally signed and locked by the signer, it becomes read-only to protect the integrity of the signature. You must ask the document owner for an unlocked copy.
Why is the Fill & Sign tool missing entirely in my PDF reader?
The tool might be hidden or you may be using a basic PDF viewer instead of a full editor. Ensure you are using a capable PDF editor like Adobe Acrobat or WPS Office, and check the Tools menu to add the Fill & Sign shortcut.
