Thunderbird does not show icloud Birthday Calender

Hello, i used the new feature to add my icloud calenders to thunderbird. that works fine. But the existing icloud Birthday calender was not separately choosable and dose … (funda kabanzi)

Hello,

i used the new feature to add my icloud calenders to thunderbird. that works fine. But the existing icloud Birthday calender was not separately choosable and dose not appear in thunderbird. what do do? Thank you!!

Best Simon

Open 1

Digital signing and encrypting : Where can I see/read what EXACTLY causes an "Invalid Signature" of/in an received mail ?

Dear all, When receiving signed AND encrypted mails from an Outlook-account I get the exclamation sign for the signature. The message is (German) : "Digitale Signatur ist… (funda kabanzi)

Dear all,

When receiving signed AND encrypted mails from an Outlook-account I get the exclamation sign for the signature.

The message is (German) : "Digitale Signatur ist ungültig Diese Nachricht enthält eine digitale Signatur, die aber ungültig ist. Die Nachricht wurde mit einer Verschlüsselungsstärke signiert, die von dieser Version Ihrer Software nicht unterstützt wird. Signiert von...."

I already did all standard checks (trusted, new hash algorithm and so on),

Now I would like to know the EXACT reason why Thunderbird is not accepting the digital signature. How can I accomplish this?

THX in advance and best regards!

Open 4 4

Reporting of blocked trackers…

Question: the homepage shows the number of blocked trackers and a SHARE button. To Whom one should share this information with? Mozilla? What is intent of this SHARE feat… (funda kabanzi)

Question: the homepage shows the number of blocked trackers and a SHARE button. To Whom one should share this information with? Mozilla? What is intent of this SHARE feature? The reporting of trackers to websites, as to remove them from their websites? Like the idea of this feature, but not sure what the actual purpose is for? No reference information to SHARE usage inside the app?

Thx, JMH :)

Open

Androidで数秒間画面が真っ白か真っ黒になる

いつもお世話になってます。 機種:POCO F6 Pro、POCO X7 OS:両方 HyperOS 3.0 ホームページ:https://rakuten.dropgame.jp/drop/play/top (https://pointmall.rakuten.co.jp/ からゲームで貯めるをクリックしてぷくぷくラグーンを押してスタート… (funda kabanzi)

いつもお世話になってます。

機種:POCO F6 Pro、POCO X7 OS:両方 HyperOS 3.0 ホームページ:https://rakuten.dropgame.jp/drop/play/tophttps://pointmall.rakuten.co.jp/ からゲームで貯めるをクリックしてぷくぷくラグーンを押してスタートで画面に入れます。)

Androidアプリでホームページのゲームを表示する時に画面が15~20秒間 真っ白になったり真っ黒になったりします。 その間操作はできません。

よろしくお願い致します。

Open 2 1 9

how to get my yahoo mail account working again, after all of a sudden after April 4 2026 just stopped receiving emails.

As of April 4 midnight my yahoo account in Thunderbird just stopped receiving incoming pop messages nor can I send. According to Yahoo, it showed that Thunderbird had acc… (funda kabanzi)

As of April 4 midnight my yahoo account in Thunderbird just stopped receiving incoming pop messages nor can I send. According to Yahoo, it showed that Thunderbird had access. Thunderbird showed how many new messages to download, but then does nothing but hang and time out. I have removed all stored yahoo passwords; I have removed yahoo permissions in yahoo in order to start over. I get the normal log in screens to add permission with oauth2, signed into yahoo account in yahoo and it shows thunderbird has access, yet Thunderbird still can NOT access yahoo mail (download pop or send smpt). YES MY SETTINGS are correct. They haven;t change since before April 4 midnight. I need this account active again. HELP!!! email to X@hotmail.com with Yahoo in the subject line: According to THunderbird, I have version 140.9 esr. when I press check for updates it says I'm up to date. Although the yahoo help page says as of March 2026 version 148. confused. Bill

(PII redacted by moderator)

Open 4

With newly updated thunderbird on m4 airlock: Subject doesn't match message panel, and correspondents are sometime randomly "co-joined"

When bulk selecting and deleting, sometime columns don't match rows. eg: subject doesn't match correspondents (sometime additional random contacts are added to correct co… (funda kabanzi)

When bulk selecting and deleting, sometime columns don't match rows. eg: subject doesn't match correspondents (sometime additional random contacts are added to correct correspondant) and message panel may not match highlighted "subject" email.

Been using for years...love the product. But this is a new quirk. I have noticed, when I have done hundreds of bulk deletions, deleted messages will be added back in inbox??

Thanks, Dave Millert, X@aol.com.

(PII redacted by moderator)

Open 6

bored with getting "You have launched an older version..."

First, let me describe the configuration I have been using successfully for two decades - I am on the latest release channel release with a POP3 configuration. I keep th… (funda kabanzi)

First, let me describe the configuration I have been using successfully for two decades -

I am on the latest release channel release with a POP3 configuration.

I keep the message store on my file server and have Tbird installed on it and my laptop. The file server is a Win 11 machine as is my laptop. Each machine points to the message store (including the config file) on the file server.

Of late, every time I try to use Tbird on the file server, I get "You have launched an older version" message. So far reinstalling and pointing to the existing message store works.

But I am getting bored with having to reinstall every time, and I suspect this will eventually break completely.

Is there a way to stabilize this?

Thanks Jonathan

Open 2 4

Problems using Gmail.

I can open gmail but it does not refresh. If I clear the cache it refreshes the first time only. Sometimes I get a message saying that my account is temporarily unavailab… (funda kabanzi)

I can open gmail but it does not refresh. If I clear the cache it refreshes the first time only. Sometimes I get a message saying that my account is temporarily unavailable but I can access gmail with no problem on my iPhone, android tablet and with Google Chrome without any problems. Turning off the Advanced Tracking does not resolve the problem.

Open 1 11

can't get sync to work on my mobile

I cannot find the menu item on my mobile device to sync my Firefox account. When I select "menu" it doesn't have that as an option; it only shows me other topics I have u… (funda kabanzi)

I cannot find the menu item on my mobile device to sync my Firefox account. When I select "menu" it doesn't have that as an option; it only shows me other topics I have used Firefox to search.

Open 2 9

I can hear youtube videos in chrome but not in firefox

Speakers are not muted. When I play a youtube video in Firefox I don't hear anything but if I play the same video in Chrome it works fine. I really prefer Firefox but I… (funda kabanzi)

Speakers are not muted. When I play a youtube video in Firefox I don't hear anything but if I play the same video in Chrome it works fine. I really prefer Firefox but I occasionally need to use my browser for Teams meetings and the audio doesn't work.

Open 4 10

Since update, text is thin and difficult to read.

Settings for font do not help. Font now looks very thin and almost blurry. Not clear, dark lines like always in the past. My setting are Arial size 16. Under advanced, it… (funda kabanzi)

Settings for font do not help. Font now looks very thin and almost blurry. Not clear, dark lines like always in the past.

My setting are Arial size 16. Under advanced, it show Arial Monospace size 13.

Open 6

Built-in VPN "Get started" button isn't working

I'm trying to use the built-in VPN for Firefox, but when I try to click the "Get started" button, nothing happens. Is the service simply not available for me yet? I live … (funda kabanzi)

I'm trying to use the built-in VPN for Firefox, but when I try to click the "Get started" button, nothing happens. Is the service simply not available for me yet? I live in the United States, for reference.

Open 8

High CPU Usage on Linux

I am running Thunderbird 140.9.1esr on openSUSE Tumbleweed. For a long time now, Thunderbird often runs at high CPU (80-100% of one core), for several minutes at a time (… (funda kabanzi)

I am running Thunderbird 140.9.1esr on openSUSE Tumbleweed.

For a long time now, Thunderbird often runs at high CPU (80-100% of one core), for several minutes at a time (5-10 minutes). This seems to happen many times every day, with no apparent cause from my end. (I just got back from Lunch, and the fan on my laptop was going crazy because of the high CPU.)

What can we do to identify and fix this issue?

Open 2

Are the Mozilla services that are excluded from the VPN encrypted or otherwise protected for secure identity?

You say, "Some essential Mozilla services are excluded from VPN routing to ensure sign-in, VPN reconnection, and screens needed to sign in for public Wi-Fi work properly.… (funda kabanzi)

You say, "Some essential Mozilla services are excluded from VPN routing to ensure sign-in, VPN reconnection, and screens needed to sign in for public Wi-Fi work properly. All other browsing activity in Firefox remains protected when the VPN is on."

How then am I protected in any kind of secure way?

All it would take is the Mozilla services using my public IP to lose my browsing protection. How are those connections secured to protect my identity from being exposed once the VPN is enabled and even after the VPN is enabled?

If the public IP can be discovered at sign-in, re-connections, and public Wi-Fi connections before the VPN is enabled, then that same public IP can be traced through internal logs to uncover all the VPN activity done after sign-in, re-connections, and public Wi-Fi access. So, how exactly can I trust the VPN protects my activity at all?

I'm just curious how you setup any protection prior to the VPN being enabled? I'm a former IT Network Specialist I had my CISCO CCNA certificate (Worked in school districts who wouldn't pay for additional certificates so I did all the study work and practice testing up to the CCNP certification just could never afford to take any of the exams beyond the CCNA). So, when I see these additional things like your 50 GB of free browser VPN and read how it works I get curious about the actual protections being provided. Are the people more vulnerable than they may be led to believe?

Open 4 22

Recently Firefox refuses to load full page or some elements

As of recently, I have problems with Firefox that do not happen in other browsers. But Firefox is my favorite, and I'd like to have this solved so I can keep using it. In… (funda kabanzi)

As of recently, I have problems with Firefox that do not happen in other browsers. But Firefox is my favorite, and I'd like to have this solved so I can keep using it.

In Zendesk, there is an option "Print ticket" which should open Print dialog and we then can print whole email to PDF. This worked for years, but as of recently that dialog simply does not show. I tried change Firefox settings for printing, but problem remains. Attached is a screenshot how it looks in chrome, and how it used to work in firefox.

As from yesterday, April 17, Firefox will not load correctly https://m365.cloud.microsoft page. It loads, but no element reacts when clicked. I cleared cache, cookies, removed extensions, refreshed firefox, but to no avail.

Thanks for the help!

Open 6 5 36

Trouble with Chase Bank

With Mozilla Firefox for Linux Mint 150.0 after logging into Chase Bank , when trying to pay off my credit card, I get a message: "It looks like this part of our site is … (funda kabanzi)

With Mozilla Firefox for Linux Mint 150.0 after logging into Chase Bank , when trying to pay off my credit card, I get a message: "It looks like this part of our site is not working right now". However the site works perfectly with Chrome, thus the problem must be with Firefox. I have cleared the Chase cookies and still getting the same result.

Open 2 9

I don't have the option to set a security key in settings under passwords and security

I followed the instructions to set a security and there is no option to do it. I need to be able to login to all of my gmail accounts. The correct password was used, and … (funda kabanzi)

I followed the instructions to set a security and there is no option to do it. I need to be able to login to all of my gmail accounts. The correct password was used, and is shown when I click the key icon and is accepted on other browsers. What is the problem and how do I fix it?

Open 12