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

Attachments (word docs and PDFs) to emails can not be opened by the receivers. Are received as .dat files or application/octet-stream

  • 1 phendula
  • 0 inale ngxaki
  • 22 views
  • Impendulo yokugqibela ngu the-edmeister

more options

Attachments I add to emails (word doc or PDFs) can not be opened by the email receivers. Word documents attachments are received with ATT00427.dat (application/octet-stream) or .doc with (application/octet-stream). PDF attached files arrive with .pdf (application/octet-stream). My copy of my sent email has the same attachment extensions.

This happened

Every time Firefox opened

Attachments I add to emails (word doc or PDFs) can not be opened by the email receivers. Word documents attachments are received with ATT00427.dat (application/octet-stream) or .doc with (application/octet-stream). PDF attached files arrive with .pdf (application/octet-stream). My copy of my sent email has the same attachment extensions. == This happened == Every time Firefox opened

All Replies (1)

more options

Firefox doesn't do email, it's a web browser.

If you are using Firefox to access web mail, you need to seek support from your service provider or a forum for that service.

If your problem is with Thunderbird, see this forum for support. http://www.mozillamessaging.com/en-US/support/ or this one http://forums.mozillazine.org/viewforum.php?f=39