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

Cannot open PDF attachment

  • 3 replies
  • 2 have this problem
  • 856 views
  • Last reply by david

more options

I see the PDF attachment size, I click on it to open using Adobe Reader but I get an error: "Adobe Acrobat Reader is not able to open *.pdf because the file is not supported or damaged (i.e. not correctly decoded)" but if I open the same email using browser + gmail I can see and read it correctly! So why I cannot read or save those PDF attachments? Thanks.

Using TB ver. 91.7.0 + Microsoft Windows [Version 10.0.19043.1586]

I see the PDF attachment size, I click on it to open using Adobe Reader but I get an error: "Adobe Acrobat Reader is not able to open *.pdf because the file is not supported or damaged (i.e. not correctly decoded)" but if I open the same email using browser + gmail I can see and read it correctly! So why I cannot read or save those PDF attachments? Thanks. Using TB ver. 91.7.0 + Microsoft Windows [Version 10.0.19043.1586]
Attached screenshots

Chosen solution

I'm glad it worked out okay. Please close this thread so it will be removed from open list of issues. Thanks.

Read this answer in context 👍 1

All Replies (3)

more options

If you save the PDF to disk and then open in in Adobe Reader, do you get an error? If so, that may be an issue for Adobe, not TB.

more options

I discovered the problem was a TB setting. I had to set the folder where the filtered message has gone as available offline. Then I was able to open and read the PDF attachments. Thanks.

more options

Chosen Solution

I'm glad it worked out okay. Please close this thread so it will be removed from open list of issues. Thanks.