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Hi,

I recently received a PDF attachment from my customer but Thunderbird was not able to open it.

I had set Microsoft Edge to open PDF by default. I got this error message.

File not foundIt may have been moved, edited, or deleted. ERR_FILE_NOT_FOUND

Whereas, if I saved the file to another location and I try to open it (again with MS Edge), there is no problem.

It seems having an "#" in the file name was part of the reason.

I could set Firefox to open the PDF by default but there seems to be disappearing fonts (in some instances) when I open a PDF with Firefox.

Not sure what to make of this but I am posting this here in case someone finds it useful.

Before update when I clicked in PDF viewer toolbar download button it opened a screen to open with, right now it only download a file. I want it back. I have firefox as pdf viewer, but sometimes I need to open file with Acrobat DC, that's when I did click download button. It works on other computer like before, it is before firefox update.

Before the most recent update (version 98.0), my default setting for pdf files is to open in Firefox and a pdf website I use prompted a download window when I clicked 'Download'. It has 'popupDownload=true' in the link which I believe did the trick.

After this update, clicking the same button just opens the pdf file instead of showing the download window, ignoring the command in the link.

Can anyone help me out? Thanks in advance.

Hi, for the long time when I have opened an PDF with external application, it was downloaded into system %TEMP%, then deleted after ext. app was closed. Very fine and expected.

Since ca. few weeks such PDFs are now downloaded to Desktop - and not removed afterwards! It's quite annoying to clear them again and again. I've checked, my %TEMP% and %TMP% are set correctly and writeable.

PDF behaviour is pretty arbitrary.

In my settings I have 'Always Ask' for PDFs and 'Always ask' for Downloads: where to save files.

And yet - if I export a file from Google Docs as PDF (an action which I would expect to trigger an 'always ask' even if that were not the setting I had already set) - it does not ask; it just downloads to my home directory (which is not a directory specified anywhere as a preference for where to download to).

I am aware that this is probably Google's being creepy and exploiting some setting or lack of setting, but firefox should protect me against this and when multiple settings are set to 'always ask', firefox should, y'know, maybe ... ask.

Seriously - why is firefox making it the user's job to work out what weird exceptions to an explicit policy should be dealt with as a separate case? If the download and save routines are activated then, if the settings are set to 'ask' - it should [profanity] ASK.

Zero tolerance for profanity even if censored. Profanity removed

Your latest update now saves every PDF I open to my desktop, I need this to stop ASAP, I open dozens and dozens per day and this is intolerable to the point I will uninstall Firefox if I cannot fix this quickly.

I have set the settings to always ask, it asks but still autosaves?

Good People, Followed screen pop-up to make Firefox default browser. Now all *.pdf files have Firefox icons and open as .html pages, I think! Seen some solutions, but for older versions of windows and followed procedure: go to Adobe, Edit, Preferences, General, 'Select Default PDF Handler', as dialog Does not have Adobe Reader XI, step two was Change to Adobe Reader DC, clicked continue, but NO Windows Configuration Screen appears. Using Version 94.0.2 (64bit) with Windows 10. Also, help answer said not necessarily a Firefox problem, also within Adobe Reader. Not comfortable with changes to be made in the registry. James