Funkcionalnosć toś togo sedła se pśez wótwardowańske źěła wobgranicujo, kótarež maju wašo dožywjenje pólěpšyś. Jolic nastawk waš problem njerozwězujo a cośo pšašanje stajiś, wobrośćo se na našo zgromoźeństwo pomocy, kótarež na to caka, wam na @FirefoxSupport na Twitter a /r/firefox na Reddit pomagaś.

Pomoc pśepytaś

Glědajśo se wobšudy pomocy. Njenapominajomy was nigda, telefonowy numer zawołaś, SMS pósłaś abo wósobinske informacije pśeraźiś. Pšosym dajśo suspektnu aktiwitu z pomocu nastajenja „Znjewužywanje k wěsći daś“ k wěsći.

Dalšne informacije

PDF Preview in Firefox

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Suddenly when I click on 'Preview' to an email PDF attachment it will no longer show the PDF file, but instead says 'We are having trouble previewing this file' ~ see screenshot. My only option is to download the file, and then open it. This is happening with both incoming and outgoing email PDF attachments. Any suggestions??

Suddenly when I click on 'Preview' to an email PDF attachment it will no longer show the PDF file, but instead says 'We are having trouble previewing this file' ~ see screenshot. My only option is to download the file, and then open it. This is happening with both incoming and outgoing email PDF attachments. Any suggestions??
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Wšykne wótegrona (2)

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You need to provide more detail. Are using a online email service or an email app? It works for me from my Hotmail account . see screenshot Did you try with Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

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A lot of email sites use their own previewer instead of handing the PDF directly over to Firefox.

A similar message was mentioned in this AT&T mail support thread where they suggested clearing cache and cookies and, if that didn't fix it, contact Yahoo: https://forums.att.com/conversations/att-mail-features/opening-word-and-excel-attachments-to-inbox-emails/64f9c4d0f78b88060a46da72

A thread in the Sky community says it mysteriously started working for some people a few days ago, so maybe Yahoo rolled out an update, or whatever other software was causing the problem rolled out an update. https://helpforum.sky.com/t5/Email/Email-preview-of-attachments-are-having-trouble-opening-files/td-p/4402132/page/2

Are you still seeing this issue?