Error code: SSL_ERROR_RX_UNEXPECTED_APPLICATION_DATA

When browsing, I sometimes (more often than not) get a Secure Connection Failed message. The Try Again tab clears the problem sometimes (not that often). This problem has… (read more)

When browsing, I sometimes (more often than not) get a Secure Connection Failed message. The Try Again tab clears the problem sometimes (not that often). This problem has just started happening in the last week, during which I have not made changes to any settings in Firefox. This problem does not exist using other search engines for the same site that I am trying to access, and I note that I also get this same failure when trying to access some Firefox webpages. Is there a fix to this other than contacting the web site owner, which I doubt is the cause of the problem, or for ease and simplicity should I just change to another search engine that does not have the problem?

Asked by Doug 2 days ago

Last reply by Doug 4 minutes ago

Thunderbird slow startup on MacOS

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has alw… (read more)

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has always been a slow starter. Can I change any setting to remedy this. At the moment I have two mail accounts configured both Gmail.

Asked by LesJen 1 day ago

Last reply by LesJen 33 minutes ago

deleted some local folders - can I restore?

I went away for a few days and when I came back I was missing a bunch of local folders. I THINK one of my employees kids were banging on me keyboard. I know I should … (read more)

I went away for a few days and when I came back I was missing a bunch of local folders. I THINK one of my employees kids were banging on me keyboard. I know I should not allow them in my office or at least password my computer when I go away??

I could import from an old computer and at least have all the local folders from before I changed computers 2 years ago.     I have a feeling there maybe an easier way?

Running on a mac. ventura. 13.2.1 thunderbird 140.3.1esr (aarch64) thank you for any help.


-andrew

Asked by purple1 48 minutes ago

unable to install ad blockers; keep geting a message that ad blocker is corrupt

Unable to install ad blockers; keep getting a message that ad blocker i"s corrupt." Never had this before from Firefox - what do I do? The ads are disturbing me! … (read more)

Unable to install ad blockers; keep getting a message that ad blocker i"s corrupt."

Never had this before from Firefox - what do I do? The ads are disturbing me!

Asked by jcnyc1973 1 hour ago

Set Rows for Shortcuts on Home Page

A long time ago I was able to set the max number of rows for shortcuts on the Firefox home page to 5. Sometime fairly recently it has changed to 4. I don't know why nor c… (read more)

A long time ago I was able to set the max number of rows for shortcuts on the Firefox home page to 5. Sometime fairly recently it has changed to 4. I don't know why nor can I remember which line in about;config I used to change it. I think the line was "browser.newtabpage.activity-stream.topSitesRows" but when I try to change it, it does nothing. At the time I first changed it, the max it would change to was 5. The max now appears to be 4 if I did it correctly. Your help would be appreciated.

Asked by William Youngman 2 hours ago

Last reply by William Youngman 1 hour ago

I think infinite scrolling, like YouTube Shorts and Tiktok, is causing some kind of issue with touch pad scrolling.

On Windows 11 laptops, I am currently using an Acer Nitro w/ 12th gen Intel i5 16GB RAM, I use my touch pad for scrolling on sites with infinite scrolling. Occasionally t… (read more)

On Windows 11 laptops, I am currently using an Acer Nitro w/ 12th gen Intel i5 16GB RAM, I use my touch pad for scrolling on sites with infinite scrolling. Occasionally this function breaks, when it does it breaks for every tab in the browser window including the setting, I haven't found a singular or specific cause yet. I have troubleshooted it in the community, the prevailing logic being that themes or extensions are causing some incompatibility, so I have reset everything to defaults and made sure I have no extensions loaded, and the problem persists. I can temporarily fix the issue by going into my settings and turning hardware acceleration on and off again. I am writing this to hopefully point out this bug as clearly as possible in hopes that your programmers can fix it in a future update, as repeatedly turning a setting on and off to "fix" it might not be the best solution in the long term.

Asked by Kris Miller (Re) 1 hour ago

Device sign id to access password missing after 32 - 64 bit TB update - windows 11

Have updated from 140.3.1 esr 32 bit to 143.0.1 release 64 bit TB and to windows 11 - uninstalled 32 bit and installed 64 bit and updated to windows 11 Following updates… (read more)

Have updated from 140.3.1 esr 32 bit to 143.0.1 release 64 bit TB and to windows 11 - uninstalled 32 bit and installed 64 bit and updated to windows 11 Following updates found that device sign in id (pin) was used to be in 32 bit missing from settings to access password but can show passwords. In reviewing the profile after update I note that Mozilla location service key, google location service key and safe browsing keys are missing (not sure what they were pre update). The key4.db file pre update was 1/3/22 but after update it is 10/10/25. The logins.json pre and post update is 7/9/25. I can see the default release profile and local only - use only the default release. My question is - has the 64 bit installation cleared all my keys/how can I check all my keys and how do I fix and ensure connections are secure?

Thankyou for any advice.

Asked by Margaret 2 hours ago

Cannot sync Android device

I followed the steps at https://support.mozilla.org/en-US/kb/sync-bookmarks-tabs-history-and-passwords-android When scanning the QR code, my phone is stuck on this: http… (read more)

I followed the steps at https://support.mozilla.org/en-US/kb/sync-bookmarks-tabs-history-and-passwords-android

When scanning the QR code, my phone is stuck on this: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-10-12-17-54-22-6b261a.png While my desktop shows this: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-10-12-17-55-00-1c9ca2.png

When signing in with email on my phone, I get an "Unexpected error": https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-10-12-17-56-18-5c7b93.png

I've tried everything. I've cleared the app's storage and also re-installing the app. I've removed the old device login from "Connected Services" in https://accounts.firefox.com/settings.

Asked by Linnéa Nydahl 2 hours ago

tab groups suddenly not working

tab groups can't get a new groups to actually show up even though they show up in the title bar and does not have the box around the other preexisting tab groupings. am u… (read more)

tab groups can't get a new groups to actually show up even though they show up in the title bar and does not have the box around the other preexisting tab groupings. am using windows 11 on a desktop. i suppose something got changed somehow, but i have no idea of why this started nor how no fix it. any and all help greatly appreciated! wolfgang

Asked by Wolfgang Rotbart 3 hours ago

スレッドの新しい順、古い順の選択項目が表示させません

受信トレイにある「スレッド内」のメールの昇順と降順を変更したいのですが、表示→スレッドの中に「メールを新しい順にする」のような選択肢が表示されません。困っています。

並び替え項目では「スレッド」を選択しています。

サンダーバードのVer.は最新です。

よろしくお願いします。

Asked by MOSAI 7 hours ago

Last reply by MOSAI 3 hours ago

Syncing calendars

An old forum describes how to sync calendars in Thunderbird. Here is an easy solution - In the left-hand pane of your calendar page, right-click your calendar name/ expo… (read more)

An old forum describes how to sync calendars in Thunderbird. Here is an easy solution - In the left-hand pane of your calendar page, right-click your calendar name/ export calendar - into a removable device. In your other computer - Tools/import/ import from a file/ choose to import calendar - easy!

Asked by karearea.f 1 day ago

Last reply by karearea.f 4 hours ago

Deleted PayPal email by mistake need help to recover it please

Going through my inbox and deleting outdated emails, I accidentally deleted an email I received from PayPal today and can't find it anywhere. Not too hot on all things c… (read more)

Going through my inbox and deleting outdated emails, I accidentally deleted an email I received from PayPal today and can't find it anywhere. Not too hot on all things computer-related, so any help would be appreciated

Asked by Vickilou 5 hours ago

finding a list of email authors, finding first and last?

I want to continue using TB but a few things really make me despair of it. But there may be workarounds. If I have a question, when did these people last send me an email… (read more)

I want to continue using TB but a few things really make me despair of it. But there may be workarounds. If I have a question, when did these people last send me an email, or have any of these people responded to something, there seems to be no way to get to a list. But. I found a way to do it. Using sqlite3.

I have been wanting a CLI for interacting with TB for a while. You know, that folder I have with 10k+ emails and if I click on it, the UI spins forever. What is even in that?

Now I can do this: 1) copy the global-messages-db.sqlite from the active profile to another place 2) run: sqlite3 global-messages-db.sqlite 3) ```sqlite> select m1.c3author, min(m2.date), max(m2.date) from messagesText_content m1, messages m2 where m1.docid = m2.id group by m1.c3author order by m1.c3author; ... ray kiddy <ray@ganymede.org>|1732124816000000|1759268233000000 ruby29@something undefined|1756740716000000|1756740716000000 salvatore@someother undefined|1758733831000000|1758733831000000 support@linode.com undefined|1755126295000000|1755126295000000 ... ```

Holy sender dates, Batman! Now I can see the earliest and latest email sent by any user. Now I can filter, sort, and see every person who sent me something in a time period. And whether it was 1 email or 1000, I just see the names and not an enormous amount of other information.

So, is this the only way to get this? Or the best? I have no idea. Please let me know if there is a better way, perhaps one using TB itself. It would be nice.

In the meantime, I will be wrapping this in a python call, doing some formatting and it will work and I can stop worrying about not seeing their email.

Asked by RayKiddy 6 hours ago