Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

Learn More

can not open downloaded files

more options

when I download a file that is not a pdf file and try to open it firefox states that the file is not pdf file and tells me that it can not process it. you treat every downloaded file as if it were a pdf file regardless of what type it is.

when I download a file that is not a pdf file and try to open it firefox states that the file is not pdf file and tells me that it can not process it. you treat every downloaded file as if it were a pdf file regardless of what type it is.

모든 댓글 (3)

more options

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

more options

Is this on mobile?

On desktop this is usually a problem with the mimeTypes.rdf file and a possible solution is to delete the mimeTypes.rdf file in the Firefox Profile Folder to reset all file actions.
I don't know if this applies to Android as well.

more options

does this apply to the android version?