Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Mozilla サポートの検索

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

Firefox doesn't open file with .pdf extension

  • 2 件の返信
  • 4 人がこの問題に困っています
  • 1 回表示
  • 最後の返信者: qoom

more options

Hello. If downloaded file has ".pdf" extension firefox can't open it saying "file.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences." It opens pdfs only after removing ".pdf" from filename (it works for all of pdf documents). I have 2 pdf related options in Preferences->applications: Portable Document Format (PDF) - is set to preview in firefox; PDF Document - is set to Use (default) and it has not option preview in firefox. I'm using arch linux and xfce4. There is MIME Type settings in xfce4 & it is set to open in firefox: "application/pdf" - "Firefox". Thanks

Hello. If downloaded file has ".pdf" extension firefox can't open it saying "file.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences." It opens pdfs only after removing ".pdf" from filename (it works for all of pdf documents). I have 2 pdf related options in Preferences->applications: Portable Document Format (PDF) - is set to preview in firefox; PDF Document - is set to Use (default) and it has not option preview in firefox. I'm using arch linux and xfce4. There is MIME Type settings in xfce4 & it is set to open in firefox: "application/pdf" - "Firefox". Thanks

選ばれた解決策

Try to rename/remove the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder:

この回答をすべて読む 👍 1

すべての返信 (2)

more options

選ばれた解決策

Try to rename/remove the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder:

more options

thanks, it works now