PDF Opening Issues

Fix Adobe Acrobat Reader and Microsoft Word File Associations

Steven ParkerSteven Parker Oct 28, 2026 868 views

Question details

The user needs to resolve file association conflicts and layout confusion between Adobe Acrobat Reader, Microsoft Word, and Microsoft Works after reinstalling or removing applications.

How to Fix File Associations Between Adobe Acrobat Reader and Microsoft Word
Product
Adobe Acrobat Reader, Microsoft Word
Device & OS
not provided
Scenario
Opening PDF or DOCX documents after reinstalling or removing document viewing software.
Observed behavior
Files are opening in the wrong application, resulting in unexpected layout changes or missing features.
Before you start

Before modifying your system settings, check the file extension of the document you are trying to open (.pdf, .doc, or .docx) and ensure the correct viewing application is fully installed on your computer.

Solution 1Recommended

Set Default Applications in System Settings

Manually assign .pdf files to Acrobat Reader and .docx files to Microsoft Word to prevent them from automatically opening in the wrong program.

When software is installed or removed, your operating system may become confused about which application should handle specific file types. Reassigning these extensions explicitly will force the correct software to open your files, preserving their intended layout and functionality.

1
Open Default Apps settings

Navigate to your system's Settings menu, select 'Apps', and then choose 'Default apps'.

2
Choose defaults by file type

Scroll down the menu and click on the 'Choose default apps by file type' link.

3
Reassign extensions

Locate the '.pdf' extension and set its default application to Adobe Acrobat Reader. Then, locate '.doc' and '.docx' and set them to Microsoft Word.

Set Default Applications in System Settings
Immediate Resolution: Once the default apps are set, all double-clicked files of that format will consistently open in the right application.

Fix File Association Issues with WPS Office

WPS Office integrates Word, Excel, PowerPoint, and PDF editing into a single lightweight application. By setting WPS as your default office suite, you can eliminate file association conflicts and easily open all document types in one place.

  1. 1. Install WPS Office: Download and install the free WPS Office suite from the official website.
  2. 2. Set as default application: During the installation process, check the options to set WPS Office as the default application for Word documents and PDF files.
  3. 3. Open all documents easily: Double-click any PDF or DOCX file to seamlessly view and edit it within the single WPS Office workspace.
Opens both PDFs and Word documents natively in a unified, tabbed interface.Fully compatible with Microsoft Office formats (.doc, .docx, .xlsx, .pptx).Includes a built-in free PDF reader and editor to prevent software conflicts.Extremely lightweight and requires no complex file association setups.
microsoft office alternative - wps office

Frequently Asked Questions

Why are my PDF files opening in Microsoft Word?

This happens when the .pdf file extension is accidentally associated with Microsoft Word. You can fix this by right-clicking the PDF, selecting 'Open with', choosing your preferred PDF reader, and checking 'Always use this app'.

Is Adobe Acrobat Reader free compared to Microsoft Word?

Yes, Adobe Acrobat Reader is a completely free application for viewing, commenting, and printing PDFs. However, creating or fully editing PDFs requires a paid Adobe Acrobat Pro subscription. Microsoft Word requires a license or Microsoft 365 subscription.

What happened to Microsoft Works?

Microsoft Works was a basic productivity suite discontinued by Microsoft in 2007. If your old documents are saved in the .wps format, you will need a compatible modern suite like Microsoft Word or WPS Office to open and convert them.

How do I change document layouts back to normal?

If a document's layout looks completely different, it may be opening in the wrong application (like a complex PDF forced open in Word). Ensure you open the file in its native program, or adjust the view settings (such as switching to Print Layout) within your word processor.