Fix: .docx Files Not Opening with Word

By GenText Editorial Team 2026年4月2日 other
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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

  1. Identify the problem — Note exactly when the issue occurs and any error messages
  2. Try the quick fix — Apply the solution described above
  3. Start Word in Safe Mode — If the issue persists, press Windows + R, type winword /safe, and test
  4. Check for updates — Go to File > Account > Update Options > Update Now
  5. 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)

毎週数時間を節約

Word内の反復的なタスクを自動化 — 下書き、引用、フォーマットが数秒で完了。

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word file-association docx default-app