Forum der Gemeinschaft Alle Produkte

Dear Firefox Support Team,

I am encountering an issue where PDF files fail to display properly in Firefox, appearing as blank pages. This problem persists across multiple PDF documents, suggesting a potential browser compatibility or configuration issue.

Request: Please investigate this behavior to identify the root cause (e.g., rendering engine, plugin settings, or recent updates). Adjust Firefox’s default PDF handling settings or implement necessary fixes to ensure proper PDF display.

Additional Details:

• Firefox Version: All
• OS: Windows & Mac
• File link: https://res.mdpi.com/data/pharmaceuticals-18-00847-v4.pdf
• Steps to Reproduce: Open any PDF file → Blank page appears.

This issue impacts productivity and user experience. Kindly prioritize resolving it or provide workarounds. Thank you for your attention.

Best regards, Mia Yu [email removed]@mdpi.com/[email hidden]@qq.com

An error occurred during a connection to lankafriends.com. Peer reports it experienced an internal error.

Error code: SSL_ERROR_INTERNAL_ERROR_ALERT

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem

I have set up a Microsoft 365 account in Thunderbird to send and receive emails. Suddenly, I cannot receive new emails on Thunderbird. Even if I manually attempt to send/receive emails, new emails are not received. No error messages are displayed. When I log into Webmail (Outlook), I can see the newly arrived emails. Upon checking with Microsoft, they indicated that the root cause seems to be related to the failure in properly updating the UIDL map and UIDL history. Reinstalling the Thunderbird application did not resolve the issue. Could you please advise on how to address this problem?

I have just updated to Thunderbird release,and everything went fine,except the local folders did not transfer. There is a lot of important data in the local folders,and I need access.

Bei einigen Web-Seiten oder Apps (ich kann es leider nicht näher spezifizieren) werde ich von dem Anbieter obligatorisch nach Benutzername und Kennwort gefragt, die Firefox kennen und vorblenden sollte. Aber dann erscheint über dem Tastatur-Feld meines Android-Smartphones ein Symbol mit einem Fingerabdruck und dem Label "Firefox entsperren". Wenn ich da draufdrücke, geschieht nichts. Was muss ich tun?

Herzlichen Dank!

Dear all,

I just found that in Firefox 139 for Android the menu buttons "Install" and "Add to Home Screen" disappeared. I tried deleting the cache, reinstalling, restarting the smartphone. I tried different websites, included well-known PWA apps (i.e. https://github.com/mdn/pwa-examples ).

I'm on Lineage 22.2.

The community guides still report the availability of this feature: https://mzl.la/3p7ltJx

Am I missing something?

Example with facebook.com in the images. Note that on x.com a popup asks me if I want to installa the app version of the website, but the menu options are still missing. It's only website I found where that popup shows up.

I read the The Times in the UK and have no problem viewing on my iPad and Google Pixel phone using the Firefox browser. However on my laptop using Firefox I get a screen that says Secure connection failed and recommends contacting the vendor as there is no workaround. On microsoft Edge there is no problem I like Firefox but for me this is a major limitation. Any ideas or suggestions welcome

When I receive some special html formatted email e.g. from ticket system like Zendesk they look like this: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-17-01-06-32-c4ca42.png

When I want to reply to the text stays at the blue colored background and the text would be hard to read and it looks ugly: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-17-01-06-37-c81e72.png

Unfortunately I can't change background color to blank or white in Tunderbird 139.0.2. In menu of reply window "Page colors and Background", "Use custom colors", "Background" I can set to #ffffff of course, click apply and ok, but that doesn't change it: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-17-01-06-42-eccbc8.png

I suppose it relies to the html formatting of the received email because on starting to write a complete new email it works. But that's very annoying that Thunderbird doesn't manage to change background colors on already formatted html body. Is this a bug or only poor source code and the programmer didn't have much motivation to write and robust code which could gather all html emails?

Could you check with this test email to test and reproduce? https://limewire.com/d/pqbEk#1idjNje6b2

Thanks a lot! I'd be very happy about your help.

Hello

Last few days been getting .....................

Access Denied You don't have permission to access "http://www.dailymail.co.uk/home/index.html" on this server.

Reference #18.42f61002.1749975469.1fbf5424

https://errors.edgesuite.net/18.42f61002.1749975469.1fbf5424

Not all the time but getting more frequent

Any ideas

Hello,

Recently I have started to have emails fail to deliver to a certain domain and the message that comes back is

550 DKIM Sender Invalid - envelope rejected.

I am using Thunderbird v128.8.1 esr (64-bit). Extensions installed are: 1. Attachment Saver (Deimios, v.0.2.2) 2. FileLink provider for Send (Teal Dulcet v2.1.1) 3. Remove Duplicate Messages (Eyal Rozenberg v0.6.1)

I have been in communication with this client for several years and not had this problem before. When I send email to the same recipients using WebMail there is no problem, it is only when I send from Thunderbird.

I am not using any encryption type of setup.

Has anyone come across this before? Does anyone know of a solution?

Thanks, Franc.

We’re having a weird issue with Thunderbird that’s showing up on multiple computers using the same mailbox. When we search using the top search bar (Ctrl+K), it often doesn't find all emails that clearly match the search term For example, we have multiple sent emails with the searched phrase in the subject, but Ctrl+K only finds one of them, even though there are two (or more) that match. When we use Ctrl+Shift+F (advanced search) with the exact same keyword and folder, all the matching emails show up just fine.

So it's not like the emails are missing —they're just not being picked up by the Ctrl+K search.

The annoying part is that Ctrl+K lets us open the whole conversation thread, which is really useful, while Ctrl+Shift+F only shows single messages.

Ive tried to:

- repair folders

- delete .msf files

- rebuild global database

- reenable "Include messages in this folder in Global Search results" but it did not help

And this isn’t just one machine, it's happening on every PC where this mailbox is used

Hello, when using a dropdown list that is connected to an external source (excel on the cloud), firefox on android does not offer us options. It works in other browsers. Ideal worked in Opera. Where is the problem with firefox?

Best regards Minárik

I'm on Windows Thunderbird version 128.11.1esr (32-bit) (Danish language)

In composing an e-mail if I select CC or BCC and add some addresses, everything seems fine.

Except: The labels for CC and BCC are completely missing. So I cannot tell if the e-mail address is a CC or BCC address.

See attached screenshot.

Hello there,

I am using Thunderbird 128.11.1esr on macOS Ventura 13.7.6 (OCLP) and would like to have all my accounts displayed in one unified inbox:

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-16-23-42-32-0314df.png

In the past all my accounts relied on pop3, but now of them changed to imap only, which now shows up like this:

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-16-23-43-14-1d6721.png

Is there a way for me to have just one inbox folder? I set it up like this ages ago but can't recall which steps need to be taken to receive the desired view.

If I choose View > Folders > Unified folders I get this:

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-16-23-45-37-4f8cd1.png

Thanks in advance!

Hello & Namaste,

I do use Thunderbird and find it extremely useful to collate all my emails at one place. I have contributed earlier and would continue to do so. But I do not wish to provide any credit card information for payment, but there are many other ways of paying thru UPI, Net banking, etc which do not ask for any credit card info. Please review your policy and make it convenient for your customers to make quick payments without asking for credit cartd info. Thanks Renukaprasad Belgur

firefox keeps knocking me out of certain web sites such as discovery netflix ,telling me to update to the latest version then restart it but no luck so far please help me ,as i still getting payed for the webpages but still can not watch because i need latestversion of firefox please help.

A couple of updates ago, the setting to move the address bar location from top to bottom vanished. Please put it back! Machine is a Lenovo 11.5 if that's relevant.