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After upgrading from the previous ESR series (140.17.0esr) I can no longer access my mailbox, due to the OAuth2 authentication process failing.

As to items on https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo: 1, 2, 4, and 5 I have double- and triple-checked. 3 is unclear to me: I'm unaware of anything hidden, yet at the same time I would have expected the site to ask me for a 2nd verification step (e.g. sending a numeric token to my mobile phone) after having entered my password. Whether that step isn't shown or whether the failure (see attached picture) occurs ahead of this I cannot tell.

Needless to say that this occurs at about the worst of all possible times, where I will need my private email much more because of soon losing my business one.

How can Firefox print PDF files to desired destination? Firefox updates after 14 October 2026 no longer produce PDF files. The interface goes through the motions, but going to the save locations shows they're not there. Looked into the Downloads folder, and did a search on my computer, including attached hard drive. Additional actions performed:

1. Installed Adobe Acrobat Pro DC to replace Acrobat X Pro. 2. Checked Firefox settings and preferences. 3. Cleared Firefox cache. 4. Restared computer.

To get Thunderbird to display correctly on the screen, you usually need to restart it once or even several times. Even then, Thunderbird is often not fully displayed, as the word ‘Inbox’ appears in italics beneath the email address, with the ‘Junk’ folder below it. Reinstalling Thunderbird has not resolved the issue.

I have had problems accessing my email server (EveryMail). Problem started about 2 weeks ago. Was no problem before. I am using unified folders. Sometimes a folder property (inbox for instance) shows all email accounts but nothing selectable. Other times an account might have only inbox selectable, other times all account labels are visible. Selecting options for deleted folder only shows inbox for most email accounts. Similar for spam.

In an answer to a previous question, I learned that Spectrum email has issues. I have since learned that Spectrum is slowly phasing their email out. So I'm guessing that change is necessary for me. If I create a free Outlook account on my W11 desktop, is using Thunderbird still an option? This whole email thing is confusing for me. Thanks for any help.

I use HTML as my signature. It has been working just find, but lately when people reply to me, their messages were coming in blue text. So today I changed the: Settings > General > Plain Text Messages > Quoted text formatting from blue colour to black (I have no idea how that was set to blue in the first place). that is all I did. Image attached of the change I made.

In any case, after that, when I tried to send a new email my HTML signature no longer displays the correct font (Pristina) but shows only variable text. The HTML file is not corrupt, it still looks fine in the actual file I saved, but, Thunderbird is changing it somehow. Even when I look back at sent files, Thunderbird is showing me the variable text and not Pristina.

Any assistance would be much appreciated. With thanks, NM

I have hundreds of bookmarks and I'm looking for a simple extension to check if the particular bookmark is still active and something that can download bookmark icon. I don't need some elaborate, overbuild extension, just a simple thing that can do just those 2 things. Nothing else. Any recommendations?

https://elabharthi.bihar.gov.in/link1/PaymentReports/CheckBeneficiaryPaymentStatus.aspx

Peer’s Certificate has been revoked.

HTTP Strict Transport Security: false HTTP Public Key Pinning: false

Certificate chain:

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Firefox quit working this morning. I uninstalled the program and downloaded lasted edition and reinstalled. I keep getting same error now and when it stopped working

The file shows in the Mozilla folder but will not run.

See error message

I have two Android phones: a Samsung Galaxy A33 and a POCO X8 Pro (HyperOS 3.3.309.0).

Both have Firefox 159.0.1, the same Firefox account, and were installed through Google Play.

The built-in VPN works perfectly on my Samsung, allowing me to select between different countries. However, the VPN option is completely missing on my POCO.

Remote Improvements are enabled on both devices, and their privacy settings are identical.

Why is the VPN available on one device but not the other? Is there a way to enable it on my POCO?

Bonjour,

Avec mon ancien smartphone, je pouvais mettre un site sur la page d'accueil du smartphone comme une application qui mène vers le lien du site. C'était vraiment pratique.

Maintenant sur mon nouveau smartphone, il n'y a plus cette fonction.

Ancien smartphone : Honor 90 Nouveau smartphone : Xiaomi Redmi A5

Pouvez-vous me dire ce que je dois faire ?

Using the get new mails button or the time interval setting may find some messages but not all. The imap mail server is mailin.telia.com. I have been using Thunderbird for several years without such issues until now several months ago. Are there any new settings I should be avare of?

Thunderbird Version 159.0, Versions-ID 20261026161902 Useragent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:159.0) Gecko/20100101 Thunderbird/159.0 OS Windows_NT 10.0 19045 account14 (imap) mailin.telia.com:993 SSL/TLS Krypterat lösenord

                                mailout.telia.com:465 SSL/TLS Krypterat lösenord true

account15 (imap) mailin.telia.com:993 SSL/TLS Krypterat lösenord

                                mailout.telia.com:465 SSL/TLS Krypterat lösenord true

account16 (imap) mailin.telia.com:993 SSL/TLS Krypterat lösenord

                                mailout.telia.com:465 SSL/TLS Krypterat lösenord true

Kind regards Roger