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

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

can not open winmail.dat PDF file attachments

  • 5 fhreagra
  • 5 leis an bhfadhb seo
  • 17 views
  • Freagra is déanaí ó Matt

more options

clients send pdf attachments usually electrical drawings for bid and a winmail.dat pdf file shows in attachment. I click on and error message says can not open this type file. I have adobe reader Why?

clients send pdf attachments usually electrical drawings for bid and a winmail.dat pdf file shows in attachment. I click on and error message says can not open this type file. I have adobe reader Why?

All Replies (5)

more options
more options

I installed add on and still cant open winmail.dat PDF file

more options

The attachments should look like this in the attachment pane:

more options

still can't open

more options

If you can't open the attachment, have your client/ customer or whatever fix their defective copy of Outlook and send real mail attachments not TNEF encoded rubbish. They are spewing defective email every time they click send on a mail with an attachment.

See https://support.mozilla.org/en-US/kb/what-winmaildat-attachment