This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

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

firefox is blocking pdf files from opening

more options

when I try to open a pdf file from inside firefox I get an error message in Acrobat Reader saying that the file format is wrong. Same scenario in internet explore, the pdf file opens with no problem

when I try to open a pdf file from inside firefox I get an error message in Acrobat Reader saying that the file format is wrong. Same scenario in internet explore, the pdf file opens with no problem

All Replies (1)

more options