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File Format & Compatibility

Fix File Conversion Window When Opening Microsoft Word

Elise WilliamsElise Williams Oct 1, 2026 868 views

Question details

The user needs to stop a file conversion prompt from appearing every time a Word document is opened from File Explorer.

How to Fix the File Conversion Window That Appears When Word Starts
Product
Microsoft Word
Device & OS
Windows
Scenario
Opening a Microsoft Word document directly from Windows File Explorer.
Observed behavior
A file conversion window repeatedly appears upon starting Word because the document file associations are incorrect or linked to the wrong application.
Before you start

Verify the exact file extension of the document you are attempting to open (such as .doc or .docx) and ensure that Microsoft Word is properly installed on your computer.

Solution 1Recommended

Correct File Associations in File Explorer

The most effective way to resolve this issue is by manually reassociating the .docx or .doc file extension with the Microsoft Word application in Windows.

When Windows loses track of which program should handle a specific file type, it passes the file incorrectly, triggering Word's file conversion dialog. Re-establishing the default app fixes this.

1
Locate the Document

Open Windows File Explorer and navigate to a Word document (.docx or .doc) that triggers the conversion window when opened.

2
Access the Open With Menu

Right-click the document, hover your mouse over 'Open with', and click on 'Choose another app' from the context menu.

3
Select Microsoft Word

In the app selection list, click on 'Microsoft Word'. If it is not immediately visible, click 'More apps' to expand the list.

4
Set as Default

Check the box at the bottom that says 'Always use this app to open .docx files' (or .doc) and click 'OK'.

Correct File Associations in File Explorer
Verify Through Icons: Once applied, the icons for your Word documents in File Explorer should change back to the standard Microsoft Word icon, indicating a successful file association.
Seamless Document Opening

Open Word Documents Without Conversion Errors Using WPS Office

Avoid annoying file conversion prompts completely by switching to WPS Office. WPS Writer provides seamless compatibility with Microsoft Word formats and can easily be set as your default processor to ensure files open instantly without errors.

  1. 1. Download and Install: Get WPS Office for free from the official website and complete the quick installation process.
  2. 2. Access Configuration Tools: Open WPS Office, click on the Global Settings icon (gear icon) in the upper right corner, and select 'Configuration Tools'.
  3. 3. Set WPS as Default: Click on 'Advanced', go to the 'Compatibilities' tab, and check the boxes to associate .doc and .docx files with WPS Office.
  4. 4. Open Documents Instantly: Double-click any Word file in File Explorer to open it seamlessly in WPS Writer without encountering conversion prompts.
Fully compatible with Microsoft Word .doc and .docx formatsBypasses legacy Microsoft file conversion prompt issuesLightweight, fast to launch, and completely free to use
microsoft office alternative - wps office

Frequently Asked Questions

Why does the file conversion window appear for standard .docx files?

This typically occurs if a recent software update, the uninstallation of another program, or a registry glitch disrupts the default file associations in Windows. As a result, the system sends the file data to Word in a generic format, prompting the conversion window.

Can a corrupted Word template cause the file conversion prompt?

Yes, a corrupted Normal.dotm template file can sometimes trigger unexpected prompts, including the conversion window, when Word starts. Renaming or deleting the Normal.dotm file forces Word to generate a clean template on its next launch, which often resolves startup glitches.

How do I fix file conversion prompts for older .doc files?

The process is exactly the same as for .docx files. Right-click the older .doc file in File Explorer, select 'Choose another app', select Microsoft Word, and ensure the 'Always use this app' checkbox is ticked before clicking OK.

What should I do if Microsoft Word is missing from the 'Open with' list?

If Word isn't listed in the app selection menu, scroll to the bottom and click 'Look for another app on this PC'. Use the file browser to navigate to your Microsoft Office installation folder (typically 'C:\Program Files\Microsoft Office\root\Office16') and select the 'WINWORD.EXE' application file.