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I'm running Firefox browser 88.0 (64) bit, and have been trying since before Xmas to upgrade it to a newer version. It's installed on an older Dell laptop running Ubuntu 16.04 LTS (which I've also tried repeatedly to upgrade without success).

I've tried to upgrade both through the UI, but also tried using the command line in Terminal. Per advice in other threads, I've found the best mirror site and changed my settings to use that, but still no luck. Even the preliminary "sudo apt update" via Terminal fails; the first error tells me that the public key is not available. I assume that's the place to start, but don't know how to correct it.

I'm up against the deadline for updating my browser, and would very much appreciate any help you can provide. (Please note that I'm posting from a newer computer, so automatically generated info about my system won't apply. See the screenshots for that info).

Can anyone tell me, please, how long I should be able to keep accessing Firefox on a Windows 10 tablet after Microsoft withdraws support for Windows 10 later this year? I seem to remember being able to access the internet on an old laptop as a 'test' a year or two after I'd stopped using it after Microsoft stopped supporting whatever version of Windows was on it, but I can't remember whether it was via Firefox or Internet Explorer or some other Microsoft browser. If Firefox will still 'work' will Microsoft withdrawing support for Windows 10 have any effect on how well it 'works', and/or how secure etc it will be? I am going to try to install some sort of Linux on the tablet (well) before Microsoft abandons Windows, but if it turns out I can't install Linux, I'm hoping I should at least be able to access the internet via Firefox. Thanks to anyone who can help. (ps I'm not sure whether this is the right place to post this question, it's just that performance and connectivity seemed to me [in my ignorance] to be most appropriate!)

W11 24H2

I just received an update to FF 137 and my userchrome.css which is set to show tabs BELOW the toolbars (i.e. a logical place above the relevant pages and not halfway up the toolbars etc.) has stopped working. Checked the toolkit.legacy etc and it's still enabled.

Any ideas to fix this are welcome.

Greetings.

I am using an old Linux Mint version. I got messages that my Firefox needed to be updated.

I finally figured out how to do that and updated it. I started to use it. No problems.

However, the update did not change the default Firefox in the menu or on the taskbar panel below. If I click on them, I get the old version.

So when I restarted the computer, when I clicked on the Firefox shortcut icon in the lower taskbar I got the old version with the tabs that were on it. I had to go back into the Firefox file downloaded for the update in order to open the new version.

So, how do I get a working shortcut icon for the new version and get rid of the old version/icon?

Thanks.

David

Hello,

Moving from an older Ubuntu 18.04 machine where Firefox is limited to version 113 to a newer machine running Mint 22 where the current version is 134.

I know how to transfer the profiles but I could not find any information on compatibility.

Would I need to install other versions before 134 to handle any changes?

Thank you

Recently we've began installing Firefox 140.2.0esr to our environment via the .msi file that Mozilla provides, however we're running in to a very odd incident.

After approximately 24 hours from installing Firefox esr to devices, it appears that the application is "updating" to 141.0.3 on the "release" channel. As far as I'm aware, this shouldn't be possible to begin with. But we've applied these settings via GPO:

Computer Config > Policies > Admin Templates > Mozilla > Firefox Application Autoupdate = Disabled Pin updates to a specific version = Enabled = Set to 140.2.0 Background updater = Disabled Disable Update = Enabled Manual Update Only = Enabled

After applying the GPO, confirmed this appears within the registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\ AppAutoUpdate = 0 AppUpdatePin = 140.2.0 BackgroundAppUpdate = 0 DisableAppUpdate = 1 ManualAppUpdateOnly = 1

At this point, I'm at a loss. We cannot have rapid release be what's installed in our environment. Is there something broken with 140.2.0 or are we doing something wrong here?

What does this mean? being updated by another instance

Is this why my FF is running godawful slow today?

Pages coming up in 20 to 60 seconds or more instead of in a second or two.

Your latest request for donations has evidently come with a forced upgrade which I did not authorise. I have been happily using an older version of TB because it supports my add-ons and themes. Now because of your uninvited intrusion they no longer work. Furthermore it seems that I can no longer download an older version that supports my requirements. NOT HAPPY!

I try to update Firefox once a month, but every 6 hours I am notified about the release of a new version, so I have to click Cancel. Is it possible to increase this interval (at least to 24 hours) or disable it altogether?

I tried changing settings "app.update.interval" and "app.update.background.interval" but it didn't help.

The latest Firefox release (141) on Android introduced a couple of new features marked as "progressive rollout", e.g. the ability to protect private tabs via PIN, while the release also brought regular updates, e.g. security fixes.

Does someone know how a progressive rollout of such a feature works technically for the userbase? How can a release be rolled out, but some of its features be kept back while other changes apply to all?

For example, the ability to set a PIN for private tabs is a local user preference configuration. The user may or may not have a user sync profile. How is it possible to rollout the feature progressively on the same release channel? Or does the progressive rollout imply the first group of users receive the feature with consecutive minor releases, e.g. release 141.1, the next group with 141.2, etc?

I've been using Firefox for a while now, and I heard there's a new update available. I'm curious about what new features or improvements have been added in this latest version. Is there a summary of the key changes? Also, are there any significant performance enhancements or security updates that I should be aware of? I want to make sure I'm taking full advantage of the latest capabilities. Any insights would be appreciated! Let's discuss more about this!

After updating my Thunderbird mail application from version 128 to 140, the shortcut icon for composing a message is no longer responsive and I cannot create a new message from it. I can no longer create a new message without right-clicking on a sent email and using “Edit as New Message (E)”. How can I get back to being able to create a message from the message creation shortcut?

Could someone please tell me what the latest version of Thunderbird is on the Release Update Channel? I am on version 139.0.2, and when I check for updates in the app, it says that Thunderbird is up-to-date. Is version 140.0 not going to be available on the Release Update Channel?

Apparently Windows 11 won't upgrade from v23H2 to 24H2 because the very nice cpu (and system) don't support SSE4.2 or PopCnt instructions. While v23H2 won't get updates after November of 2025, I tend to use operating systems WAY beyond no more updates without problems, and only upgrade when browsers no longer update and support some websites, notably banking and credit card sites, for example.

Any way to get at least a rough idea of when/how long Firefox will continue to update on Windows 11 23H2 so I can plan ahead? Usually it's a year or 2 or more after Microsoft stops updating the OS.

Thanks.

Hello, I have Mozilla Thunderbird version 128.12.0esr (32-bit) on a Windows 10 laptop On the Help/About Thunderbird it says update failed. I have clicked on download and have version 139.0.2 in my downloads folder. When I try to install it all goes well until I get a message "Your computer must be restarted to complete a previous uninstall of Thunderbird. Do you want to reboot now?

Yes No " I have rebooted several times now with the same results. What do I need to do to get the update Regards Peter Norris