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How to Restore Excel and Word as Default File Applications
Question details
The user needs to change the default file associations back to Microsoft Word and Excel after another program has taken them over.
- Product
- Microsoft 365, Word, Excel
- Device & OS
- Windows
- Scenario
- Attempting to open Office documents directly from the file manager.
- Observed behavior
- DOCX and XLSX files display a PDF icon and incorrectly open in Adobe Acrobat instead of their native Microsoft Office applications.
Before editing the registry or modifying application settings, we highly recommend creating a System Restore Point on your Windows PC to prevent accidental data loss or system corruption.
Repair the Microsoft Office Installation
Running a Quick Repair resets Microsoft Office's default file associations and fixes corrupted settings without deleting your personal files.
Windows includes a built-in repair tool for Microsoft Office that can automatically restore broken file associations.
Click the Start menu and select Settings (the gear icon), then navigate to Apps, and click on Apps & Features.
Scroll down the list of installed applications, search for Microsoft 365 or your specific version of Microsoft Office, and click on it.
Select Modify, choose the Quick Repair option from the prompt, and follow the on-screen instructions to reset your application settings.
Delete the UserChoice Key in Registry Editor
If a standard repair fails, manually removing the incorrect registry key forces Windows to reset the file association for the affected extensions.
Test with a New Windows User Profile
File association errors can sometimes be caused by a corrupted Windows user profile. Testing in a new profile helps isolate the issue.
Open Word, Excel, and PDF Files Seamlessly with WPS Office
Tired of dealing with broken file associations and complicated registry fixes in Microsoft Office? Switch to WPS Office. It's a free, lightweight, and unified office suite that natively handles Word, Excel, Presentation, and PDF files all within one application, preventing default app conflicts entirely.
- 1. Download the Software: Visit the official WPS Office website and download the free installation package for your Windows PC.
- 2. Install the Suite: Run the installer file and complete the quick, one-click setup process.
- 3. Set as Default Application: Upon the first launch, follow the prompt to easily allow WPS Office to set itself as the default application for DOCX, XLSX, and PDF files.
Frequently Asked Questions
Why do my Word and Excel documents suddenly look like PDFs?
This usually happens when Adobe Acrobat or another PDF viewer accidentally takes over the default file association for .docx and .xlsx files, which often occurs during a software update or new installation.
Can I manually set Word as the default app from Windows Settings?
Yes. You can go to Windows Settings > Apps > Default apps. Search for the specific file extension (like .docx), click the currently assigned default app, and select Microsoft Word from the list of available applications.
Will running an Office Quick Repair delete my personal documents?
No. A Quick Repair only checks and replaces corrupted or missing program files and resets configuration settings such as default file associations. Your personal documents and data will remain untouched.
What should I do if the UserChoice registry key cannot be deleted?
If you receive a permission error while in the Registry Editor, right-click the UserChoice key, select Permissions, and ensure your current user account is checked for 'Full Control' before attempting to delete it again.
