Thunderbird Community Forum

Something seems to have changed recently with the PDF rendering in Thunderbird. I received an email with a PDF file attached. When I view it on the screen it looks fine, but when printing it out from within Thunderbird part of the top of the first page missing; it looks like part of the image is behind a white rectangle.

When I save the file and print it using Acrobat Reader it renders fine.

I don't know what to make of this behavior, but it does seem to be new and there is a difference between how the file is printed from Thunderbird as opposed to printing using Adobe Reader.

Thunderbird 152.0.1 on Windows 11 PC.

Can't drag and drop attachments from Thunderbird into file manager. I get a windows message box that says "Unspecified error" white cross on red circle. If I drag and drop with the control key held down it creates a file of zero length in the selected destination, It's not running as admin. Problem only just occurred.

Recently updated to ESR Meadow.

Now when I try to save attachment from an email by dragging and dropping to desktop, Windows pops up "Error Moving File or Folder - Unspecified error" and the operation fails.

And when I try to save attachment from an email by right click > open > Save dialog, the save filename is always "nsmail" but with the original file extension. E.g. a jpg attachment would come up as "nsmail.jpg", and a txt file attachment would come up as nsmail.txt. It does then save it, but why lose the filename?

It used to preserve the attachment filename, I'm sure! And drag and drop to desktop was such a convenient feature!

I have tried in Troubleshoot mode and behaviour is the same. I have tried in Windows Safe mode and behaviour for Save is the same; but drag and drop is completely disabled there (when I drag it, it shows a circle with line through icon).

Is it just me?

My Thunderbird install updated from 140.13.0esr to 153.0.2esr yesterday and now I can no longer drag and drop any attachment from an email to any folder on my computer. I simply get an error message window with a title of "Error Moving File or Folder" with "Unspecified error" text. See image attachment.

I've tried a variety of folders, including Downloads, Documents, Pictures and other folders on local and external storage devices.

I can save the attachments using the Save All button, or by right-clicking a file and choosing Save As, but not by dragging and dropping as I have done so for years.

I have checked if Thunderbird is running in admin mode, which it is not, but have tested it both ways with the same problem occurring. I have also run Thunderbird in Troubleshoot mode, and the same thing occurs. I tried clearing the startup cache from the troubleshooting page with no change. Restarting the PC did not resolve the issue, and disabling my anti-virus(Avast) also did not make a difference to the issue.

I am running Thunderbird 140.13.0esr (64-bit) in Windows 11 25H2. I received an e-mail message that has a JPEG attachment. When I open the attachment, the image is opened with the MS Photo app. But in that app I cannot rotate the image. If I save the attachment on my disk and then open it with the MS Photo app, I am able to rotate the image. I am wondering why the instance of the Photo app invoked by Thunderbird does not allow rotation. Note that in the -Thunderbird uploaded image, the rotate icon at the top left is greyed out (and not available). Thanks.

Since Thunderbird update to Snap ``` 140.12.1esr (64-Bit) Mozilla Thunderbird Snap for Ubuntu ubuntu-snap-build - 1.0 ``` opening attachments ceased to work. What does NOT work (any more):

• Move mouse over attachment → right mouse → open (nothing happens)
• Move mouse over attachment → right mouse → open with (doesn't exist)
• Move mouse over attachment → doubleclick (nothing happens)
• Settings → Attachments → There is an empty box, and in the void beneath it, floating in empty space the text (backtranslated from DE): "Add a Filelink-memory service" or "Filelink-save service" or similar. The text is dead (not clickable), same for the empty box.

AFAIR, in the good old non-snap TB version, the box had file extensions and linked applications to open them. The box / links / extensions coud be added, edited, removed. But in snap crap it's all dead...

Any hints what I am missing?

I used to open attachments from received mails (like .diff, .patch), and also used it for final inspection of own attachments while composing mails.

Sometimes, the following message opos up: /run/user/1000/doc/1d06e601/binutils-sort-text.diff konnte nicht geöffnet werden, weil die damit verknüpfte Hilfsanwendung nicht existiert. Ändern Sie die Verknüpfung in Ihren Einstellungen.

With 03.04.2026 they began to notice that the attached emails in eml format (the attached emails have attached documents, mostly pdf) sent from yandex mail stopped opening. Everything used to open well. Eml also does not save to disk. If you send the same files via Gmail, everything opens. Program version 150.0.1

I am using Linux Mint and Thunderbird v140ESR.

I have searched the knowledgebase here to find out how to add an attachment to an email. All the screenshots are for the Windows version, even though I have selected my version from the selector on the RHS:

https://support.mozilla.org/en-US/kb/how-use-attachments#thunderbird:linux:tb140-esr

Any advice gratefully received.

Most file attachments I receive open the correct program by file type. that does not happen for docx. Can I establish that default? If not, I have to save to tile system which will correctly handle the connection, but is not a desirable workflow.

I received an email with several jpg images attached. I click on them to open in MS Office Picture Manager, and all I get is a tiny box with a red X. I have tried several online help resolutions, yet no resolve.

In den Vorschaufenstern sind in Thunderbird seit Kurzem keine Anhänge mehr zu sehen. Habe ich unbewusst eine falsche Einstellung vorgenommen? Habe alles versucht, keine Lösung erhalten.

Knowing that an email message should be kept below the size of 25MB, I was trying to make my attachments smaller than that. Yet when I was sending a message with no text and 1 attachment the size of 21.5MB, I got a warning that I was trying to send a message the size of 29.4MB. Where does this come from?

When T-Bird sends a message with an in-content photo, is that photo compressed to save space and transmission time?

I converted from Eudora. Eudora would compress in-content photos to save space and transmission time.

If T-Bird performs a similar action, is that compressed file saved somewhere?

Whenever I open Thunderbird on my desktop, I get a message that "FileLink Provider from WEBDAV is not properly configured," or something like that (hard to write it down when it just flashes on the screen for a few seconds!).

I have no idea what that means. I may have used FileLink in the dim dark past, but I don't recall what it's even for, let alone what to do about this error message, if anything.

Shall I just ignore it, or is there something I should do to resolve the matter? Thanks!

Hi there, Just installed Thunderbird email. Before uninstalling Outlook 2016, I tried to forward some messages to Thunderbird, but Thunderbird will not show emabedded images or attached photos, regardless of format (JPG, WEBP or PNG) Example: Instead of the image embedded in the email, I got this: g:20260201194950ee722ec300f042669bef9585ca10p0eu&R=1KSFSC960P76L&T=O&U=https %3A%2F%2Fimages-eu.ssl-images-amazon.com%2Fimages%2FG%2F01%2Fnav%2Ftransp.gi f&H=8QFJAA9HOQ1LXLAKNXLPWFHXGSSA&ref_=pe_109088481_1104238771_opens>

I have Original HTML in Thunderbird settings, not changed anything. How do I resolve this? I appreciate your help

docx and xlsx attached files don't open with I click on them. I want them to open in Word and Excel. Nothing happens. I have to save them to my Desktop and then I can open them.

doc and xls attached files open when I click on them.

I can't find any associations in "files and attachments". 

I'm using version 140.7.0esr (64-bit)