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.

Avatar for Username

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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Association for PDF attachments

  • 1 freagra
  • 1 leis an bhfadhb seo
  • 33 views
  • Freagra is déanaí ó Toad-Hall

russell19
russell19
more options

The error message below come up when trying to open a PDF attachment. This only happens when trying to open the attachment before sending a message. Messages that have been sent or received we are able to open the PDF attachment. I have deleted the Preferences in the settings for PDF type files many times and still unable to open a attachment. It's important to be able to open a attachment before a mail is sent to confirm the document is correct Please assist.

Error Message

C:\Users\Russell\AppData\Local\Temp\nsmail.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.

The error message below come up when trying to open a PDF attachment. This only happens when trying to open the attachment before sending a message. Messages that have been sent or received we are able to open the PDF attachment. I have deleted the Preferences in the settings for PDF type files many times and still unable to open a attachment. It's important to be able to open a attachment before a mail is sent to confirm the document is correct Please assist. Error Message C:\Users\Russell\AppData\Local\Temp\nsmail.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.

All Replies (1)

Toad-Hall
Toad-Hall
  • Top 10 Contributor
more options

TRy info at this bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=1698140 from comment 8 onwards.

Also good info in this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1729922 from comment 17 onwards


Basically - something werid going on with the Content type: HTML document Thunderbird seems to think pdf are HTML - SEt the Content Type for PDF to eg: Adobe But set Content type: HTML document Action to 'Always Ask' or if you rarely open any html documents then set as Adobe.