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.

Buscar en Ayuda

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

I HAVE LATEST FIREFOX ON MAC. WHEN I TRY TO OPEN A PDF OR WORD DOCUMENT ON A WEBSITE I GET ERROR MESSAGES. WHAT IS PROBLEM AND WHAT CAN I DO?

  • 1 respuesta
  • 5 tienen este problema
  • 3 visitas
  • Última respuesta de Craigadeath

more options

These error messages come up:

PDF error

/Users/PaulDeridder/Downloads/9.0 section I FDA 3674 UCM048364.pdf could not be opened, because an unknown error occurred.

Try saving to disk first and then opening the file.


WORD document

Adobe Reader could not open '7.1.2.1 Wuxi Cold Genesys CG0070 Stability Protocol.doc' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded).

These error messages come up: PDF error /Users/PaulDeridder/Downloads/9.0 section I FDA 3674 UCM048364.pdf could not be opened, because an unknown error occurred. Try saving to disk first and then opening the file. WORD document Adobe Reader could not open '7.1.2.1 Wuxi Cold Genesys CG0070 Stability Protocol.doc' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded).

Todas las respuestas (1)

more options

FIRST Install a new version of Acrobat.

Then....

 1.  Go To Firefox, Preferences
 2. Click the Applications tab
 3. Scroll down to PDF File
 4. Under Action click on the drop down menu next to it.
 5. Click Use other...
 6. Select the NEW VERSION of Acrobat that you just installed.