PDF Editing Issues

How to Fix Acrobat Fill and Sign Tool Not Working

Tauseeq MagsiTauseeq Magsi Nov 10, 2026 868 views

Question details

The user is unable to use the Fill and Sign tool in Adobe Acrobat to enter text into PDF documents.

How to Fix Adobe Acrobat Fill and Sign Tool Inactive or Missing Form Fields
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.
Before you start

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'.

Solution 1Recommended

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.

1
Open Document Properties

Launch Adobe Acrobat, open your PDF file, and go to File > Properties from the top menu.

2
Review Security Settings

Click on the Security tab and review the Document Restrictions Summary to see if 'Filling of form fields' and 'Signing' are set to Allowed.

3
Select Fill and Sign

If permissions are allowed, click on the Tools menu and select Fill & Sign to activate the standard text and signature features.

Check PDF Security and Interactive Fields
Interactive Forms: If the PDF already has interactive fields, simply click directly inside the highlighted boxes to start typing. The standalone Fill & Sign tool might be hidden to prevent you from overriding these predefined fields.
WPS PDF Editor

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. 1. Open PDF in WPS Office: Launch WPS Office and open your target PDF document.
  2. 2. Navigate to Fill & Sign: Click on the Fill & Sign tab located on the top navigation ribbon.
  3. 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. 4. Insert Signature: Click on the Sign button to draw, type, or upload an image of your signature, and place it exactly where needed.
Easily insert text, checkmarks, and custom signatures into any PDF.Fully compatible with standard Adobe PDF formats and interactive forms.Lightweight application that runs smoothly on Windows without heavy resource usage.
microsoft office alternative - wps office

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.