Forum Bashkësie Thunderbird

For years I have been using Thunderbird and supporting with donations and one of the important uses is being able to preview .pdf files and then quickly highlight and copy information from the pdf such as an invoice number so I can paste it into another document.

Now I can not do this - Why?

I am running 154.0 (64-bit) on Windows 11 - not that this should matter - clearly the issue is the update has chanced how .pdf's can be accessed.

Other issue is printing the pdf only prints a blank page

Incredibly frustrating - what is the issue and how do I fix it?

This isn't really about messaging, it's about attachment printing, but I can't find a better topic to file this under.

I get emails with PDF attachments dozens of times a month. When I print the PDF's, I always select "print headers & footers" and never had an issue until this morning. Now if I "print headers & footers" all I get is headers & footers, no portion of the PDF file is visible on the printout. If I unselect that, what I get is a blank page. Changing margins doesn't help. Changing the Scale doesn't help. Saving the files and then printing them from Adobe works fine, but obviously I don't want those extra steps and I DO want the headers & footers from Thunderbird.

Windows 11 home, 25H2 26200.9168 Thunderbird 154.0 64 bit, it auto-updated itself to this version sometime in the last day or two.

Edit: Just saw it was already a known issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1959171

I've found out that on both Linux and Windows since the last update (154.0), the PDFs printed directly from the Thunderbird PDF viewer, prints out blank PDF.

To recreate this, open a PDF attachment in an email, simple double click on it, in the top right corner on the tool bar, press the little printer icon, choose either "Save as PDF" or print to the actual printer, in both cases, you will get one blank PDF page.

Suddenly since Friday 21.08.2026 morning every single person in our company started to call the IT department that their Thunderbird client is printing out blank pages (white pages) instead of attachments from emails.

What is happening -> Employee gets email with PDF attachment -> clicks to open it in thunderbird print preview -> prints -> blank page comes out.

What works -> Downloading the PDF and printing it. Opening the PDF in any other browser than Thunderbird and printing it.

No settings or updates were changed and it's a big issue affecting multiple computers.

What I tried doing -> Trying different printer (No fix), Resetting print settings in thunderbird (No fix). Trying other PDF attachments from older emails (No fix). Looking at print settings in windows (Which I didn't change since it only doesnt work in Thunderbird).

Problem is that on thunderbird in my office, This doesn't happen. We have the same versions and settings.

I tried opening the error console while opening the PDF and on computers where it doesnt work it shows me an error with along the lines of "This document is open in compability mode due to **** header <doctype html>" Something like that but i would have to check again.

I don't get this error on my personal PC.

Dzień dobry, Zgłaszam powtarzający się błąd w programie Thunderbird. Mam problem z drukowaniem załączników w formacie PDF bezpośrednio z okna wiadomości e-mail. Opis problemu: Podczas próby wydruku załącznika PDF, w oknie podglądu pojawia się czarny ekran z komunikatem, że aplikacja nie obsługuje podglądu. Po kliknięciu „Drukuj”, drukarka wypuszcza całkowicie puste, białe kartki. Środowisko: System operacyjny: Windows 11 Drukarka: Canon MF450 Series UFR II Ważne informacje: Drukarka jest w 100% sprawna. Drukowanie tych samych plików PDF po zapisaniu ich na dysku (przez przeglądarkę, Adobe Acrobat) działa bez najmniejszego problemu. Problem występuje wyłącznie wewnątrz Thunderbirda. Co już próbowałam zrobić (bez skutku): Uruchomienie programu w trybie rozwiązywania problemów (Safe Mode). Czyszczenie pamięci podręcznej (cache). Resetowanie ustawień profilu drukarki w Edytorze ustawień (usunięcie parametrów print_printer). Wymuszenie systemowego okna dialogowego przez zmianę print.prefer_system_dialog na true. Wyłączenie zaawansowanych funkcji drukowania w sterowniku Windows i zmiana trybu na rastrowy. Wygląda na to, że wbudowany silnik czytnika PDF w Thunderbirdzie przestał poprawnie komunikować się ze sterownikiem Canon UFR II. Będę wdzięczna za zbadanie tego błędu i pomoc, ponieważ drukowanie bezpośrednio z programu jest mi niezbędne do codziennej pracy. Z poważaniem, Alina

All of a sudden I can't print attachments. Not sure if it was the recent update. I can print the email, just not any attachments. They print blank pages. I have to save the attachment to my desktop and then print it.

When I try to print an attachment using the mozilla app on my desk top computer. It only prints a blank page. I open the same attachment in gmail, it prints fine. Please help I like the app. Thank you Anthony

Every 10 minutes, your Thunderbird app generates an attachment (nmsa) that McAfee deems a Trojan and quarantines it. I get 15-20 popups from mcafee every hour. If I close Thunderbird it stops. What can i do to stop this from happening?

Trojan:Win/SuspiciousAttachmentScript.a

C:\Users\ken_s\AppData\local\Temp

"Показывать вложения в теле сообщения" для pdf на работает. Включение отключение опции никак не влияет. Через настройки включал параметр mail.inline_attachments.text в true и перезапускал приложение - не помогает.

I can't highlight words on attachments, they open in a window, if I left click and try to copy words nothing is highlighted, so invisable highlights, it does copy if I right click and copy, but you can't see what you are copying!

I can print e-mail, but not the attachmnet since yesterday. So I contacted HP-support, but it is not the printer. The last attachment I printed was before the last update of thunderbird. What can i do?

Добрый день.

При пересылке полученного письма с вложениями от абонента (у абонента почтовый клиент от компании 1С) вложения исчезают. Выяснили, что когда письмо отправляется из 1С "Content-Type: multipart/mixed" , Thunderbird не распознает данный параметр и поэтому удаляет вложения.

Подскажите, какие настройки сделать в почтовом клиенте, чтобы вложения не пропадали?

С уважением, Дмитрий

After doing the last update when I open a PDF file inside Thunderbird And I try to print I get blank pieces of paper but no print. Have tried re-installing printer but get the same results. Can you assist.

For a few days now I have not been able to print pdf files from within Thunderbird.

I am using 154.0b2 (64-bit) Beta version, but had the same problem with the previous version.

If I try and print the pdf it creates the file but the file is blank. This happens when printing to a physical printer or printing to PDF on the computer. The file is created but no content can be seen.

Workaround is to download the PDF and then print it from another app but it is annoying and did not do this previously.

Printing email content from Thunderbird works fine, to physical printers or to PDF files.

Any help would be greatly appreciated.