Cannot open PDF attachment from message window, can open from drafts folder
Running Thunderbird 128.2.3esr (64-bit) on Ubuntu 24.04. In Settings > Filed & Attachments, the pdf content type is set to Use System Handler (default).
- Compose a message, add a PDF as an attachment, and save the message as a draft.
- Go to the Drafts folder, select the message you saved, and double-click the attachment. The default helper application opens the file.
- In the Drafts folder, double-click the message to open it, and then double-click the attachment. The following message appears:
Double-click the attachment. The message /path/Downloads/thunderbird.tmp/nsmail.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.
Why can I open an attachment from a message in the Drafts folder, but not from the message itself?
Alla svar (1)
I guess this is another example of the sand boxing in ubuntu going wrong.
Cannonical have changed to snaps and that restricts a whole lot of things https://ubuntu.com/core/docs/security-and-sandboxing