How to Fix Acrobat Fill and Sign Tool Not Working
Question details
The user is unable to use the Fill and Sign tool in Adobe Acrobat to enter text into PDF documents.

- Product
- Adobe Acrobat
- Device & OS
- Windows 10
- Scenario
- Attempting to fill out or sign a PDF document using the designated tool in the software.
- Observed behavior
- The Fill and Sign tool is completely inactive, unavailable, or does not allow text entry on any PDF, even after the application has been updated and reinstalled.
Press Ctrl+D to open the Document Properties and check the Security tab to ensure the PDF creator has allowed 'Filling of form fields' and 'Signing'.
Check PDF Security and Interactive Fields
Verifies that the document is not password-protected or restricted against form filling and signing by the original author.
Adobe Acrobat restricts the Fill and Sign tool if the document is secured with a permissions password that disables editing. Additionally, if a document already contains interactive, fillable form fields, the standard text tool may be disabled to prevent overlapping entries.
Launch Adobe Acrobat, open your PDF file, and go to File > Properties from the top menu.
Click on the Security tab and review the Document Restrictions Summary to see if 'Filling of form fields' and 'Signing' are set to Allowed.
If permissions are allowed, click on the Tools menu and select Fill & Sign to activate the standard text and signature features.

Repair Acrobat Installation and Reset Preferences
Fixes potential corruption in the Acrobat installation or user profile preferences that cause tools to become inactive.
Easily Fill and Sign PDFs with WPS Office
If Adobe Acrobat continues to experience issues, you can easily fill forms, add text, and insert your signature using the built-in PDF editor in WPS Office. It provides a fast, stable, and user-friendly experience for managing your documents.
- 1. Open PDF in WPS Office: Launch WPS Office and open your target PDF document.
- 2. Navigate to Fill & Sign: Click on the Fill & Sign tab located on the top navigation ribbon.
- 3. Add Text or Checkmarks: Select the Add Text or Add Checkmark tool, then click anywhere on the document to fill out the form.
- 4. Insert Signature: Click on the Sign button to draw, type, or upload an image of your signature, and place it exactly where needed.

Frequently Asked Questions
Why is the Fill and Sign tool grayed out in my PDF?
This typically occurs if the PDF author has applied security settings restricting editing, filling, or signing. It can also happen if the file is a certified document that prevents further modifications.
Can I use Fill and Sign on a password-secured PDF?
If a PDF is secured with an editing or permissions password that restricts form filling, you must enter the password to unlock the file before the Fill and Sign tools become available.
What should I do if my PDF has interactive fields but Fill and Sign doesn't work?
If the document contains fillable interactive fields created by the author, you should click directly into the highlighted form fields to type. The standard Fill and Sign text tool is often disabled in these cases to prevent formatting conflicts.
Does WPS Office support interactive PDF forms?
Yes, WPS Office fully supports standard PDF interactive forms. You can click directly into the fields to type, select options from dropdown menus, and check boxes seamlessly.




