Fix: .docx Files Not Opening with Word
By GenText Editorial Team 2026年4月2日 other
クイックアンサー
Right-click any .docx file > Open with > Choose another app > select Word > check 'Always use this app to open .docx files.' Alternatively, go to Windows Settings > Apps > Default Apps > search for .docx.
.docx Files Not Opening with Word
How to restore .docx files to open with Microsoft Word instead of another program.
簡単な解決策
Right-click any .docx file > Open with > Choose another app > select Word > check ‘Always use this app to open .docx files.’ Alternatively, go to Windows Settings > Apps > Default Apps > search for .docx.
手順
- Identify the problem — Note exactly when the issue occurs and any error messages
- Try the quick fix — Apply the solution described above
- Start Word in Safe Mode — If the issue persists, press Windows + R, type
winword /safe, and test - Check for updates — Go to File > Account > Update Options > Update Now
- Repair Office — If nothing else works, go to Settings > Apps > Microsoft Office > Modify > Online Repair
よくある質問
If the issue persists after trying all steps, contact Microsoft Support or visit answers.microsoft.com. Include your Word version (File > Account > About Word) and a description of the steps you’ve already tried.
予防
- Keep Microsoft Office updated with the latest patches
- Regularly back up important documents
- Avoid installing untrusted add-ins
- Use .docx format for all documents (not .doc)
word file-association docx default-app