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Currently on 131.0.3. Started having this issue around the time 131 dropped.

I press Ctrl-shift-O and bookmarks manager won't open. Bookmarks manager opens normally if I use the menu to open it. Keybind won't work in troubleshooting mode so I know it's not an addon, and the hotkey works fine on other computers with Sync enabled so I know it doesn't have to do with my synchronized settings. Also won't open with a fresh profile so I am very hesitant to reset all my settings.

I use this keybind multiple times per browsing session so it has had a major impact on my usage. Not sure what to do. Please help!

I'm going to try a graphics driver update in the hope that helps. This is on Windows btw.

How can I get the download for version 78 for Firefox? My Mac is on 10.11.6 and my Firefox won’t open bc the newer version isn’t supported. I need the old version and can’t seem to find a way to download it. Please help!

On the newest firefox update on Windows PC My PDF reading has been not displaying PDFs correctly on Firefox I tested on other PDF views and they work as normal (All images are normally white with black text PDFs) Sometimes it displays nothing at all (as seen in Image 1) Some pages will display correctly but the rest won't (as seen in Image 2) Some pages will display text but strangely (as seen in Image 3) It does flash white sometimes while scrolling but it still doesn't show text

Hello, could you please let me know if updating Firefox as suggested (version 128) will be compatible with my iMac OS X Version 10.9.5. Thank you very much. Kind regards AS.

I looked at the system requirements page at https://www.mozilla.org/en-US/firefox/141.0/system-requirements/ . For Windows devices, the operating systems supported are listed as "Windows 10 or later".

In October 2025, Microsoft officially stops providing feature and security updates for Windows 10. However, they offer consumers and businesses the option of enrolling in 1-year, 2-year, and 3-year subscriptions for Windows 10 devices which will provide another 1-year, 2-years, and 3-years of additional security updates. You can read more about this at https://learn.microsoft.com/en-us/windows/whats-new/extended-security-updates

For those individuals and businesses who will be enrolling devices into the Windows 10 ESU program, will Mozilla continue to support Firefox on Windows 10 after October 2025, at least for those receiving security updates through Microsoft subscriptions? Or at that point will Mozilla consider Windows 11 to be the only supported Windows operating system?

Thank you!

I require a copy of Firefox focus for my 87 year old mothers recent purchase of a bergstom android smart phone. My Mum knows absolutely Zero about the internet!! While I am happy for her to be able to browse the web, I am worried about here online safety and an email address increases her chances of signing into a site and imputing sensitive data. Hopefully, over time, if she learns the basic and the risks involved she can further explore the wonders of the internet? I am happy to send a telephone no, to which a direct link for the download could be sent.

Thank you

Steven Taylor

A few weeks ago after an automatic update I ended up having Thunderbird version 131.0.1 installed, I have no idea how this happened. On opening I get a message telling me I shouldn't be using a beta version and that I should revert to the latest general release version (128.4)

Today when I had some free time I downloaded 128.4 and installed it. On opening it it says that I can't use a profile file from a later version with the earlier version. Is there a way to recover from this WITHOUT having to set up the whole profile again from scratch.

Meanwhile I have done a system restore so I am back with 131.0.1 It has not given me any problems so far. Is there a new general release version imminent that will get me back on track?

I would appreciate any help I am not a computer expert, just a user, and find Thunderbird a very good email client.

David Gould

I have been using thunderbird for years and have 2 lightning calendars. These are stored locally in home/.thunderbird on Ubuntu - currently 24.01.1LTS, TB version just updated to 128.3.0esr. About a week ago I stopped being able to save calendar events, getting the message

An error occurred when writing to the calendar Home! Please see below for more information. Error code: MODIFICATION_FAILED. Description: Failed to write to calendar file file:///home/alasdair/.thunderbird/Home.ics: Could not create unique file in `/home/alasdair/.thunderbird' (NS_ERROR_FILE_ACCESS_DENIED)

I have uninstalled and reinstalled thunderbird to no effect. As I am the only user of the machine all prcesses run as me, the .thunderbird directory is owned by me and I have all permissions on it, as I have for all files in the directory. I can create and edit files there no problem. I have no idea how to d=fix this.

After last update Firefox ESR 115.23.0 the menu on the website: https://connect.garmin.com/modern/homeis not displayed correctly. Could you fix this? Second question - can you disable reCAPTCHA when logging in to this site?

After auto-update to v128.2.3esr all my rss-feeds are broken. The main rss-folder Account Name has changed to "server8.invalid" and all contained rss-feeds are colored gray and are unable to fetch new messages. How can I fix this?

I've been tasked with removing Firefox from all Windows workstations in our enterprise environment. Our users don't have local admin, so when they install Firefox, it is installed in the user's profile.

I've just installed Firefox 143.0.1 in my own user profile for testing purposes. However, when I attempt to uninstall, either from Control Panel or by running %localappdata%\Mozilla Firefox\uninstall\helper.exe manually, UAC prompts for elevation, even though I installed without elevating.

I've dug in a bit more, and I found this was an issue five years ago as well:

https://support.mozilla.org/en-US/questions/1286070

According to that post, the issue was resolved, but it seems to have come back.

Any help would be appreciated.

Installed latest version of TB and want to migrate account settings and messages from Postbox to Thunderbird. I used the TB import tool and selected the active Postbox profile to import. All three accounts were imported. All the emails in one account were imported. In the case of the other two accounts, one of which is active and one is inactive, TB only imported the message headers only, not the contents.

I then found a migration app from a software company that was supposedly designed specifically to migrate Postbox accounts and messages to TB. When I ran the app, I got the exact same results as when I did it manually.

Any ideas on why the message content is missing on all emails in the two other accounts? The account settings are unchanged from Postbox.

Thanks!

How can I implement my previous profile in 128.3.0 after inadvertent (release channel) automatic update to 131.0 followed by downgrade (uninstall/download/reinstall from thunderbird.net) to latest supported esr release, as recommended.

My last profile worked fine after auto update to 131.0 with emails, local folders, calendar, rules, contacts, etc. all available. Now, when attempting to launch or use that previous profile in reinstalled 128.3 popup advises: "You have launched an older version of Thunderbird." "A newer version of Thunderbird may have made changes to your profile which are no longer compatible with this older version. Use this profile only with that newer version or create a new profile."

Only options then available are "Exit" or "Create New Profile." TB 128.3 will recognize only a newly created generic profile, but not allow previous profile to be launched or set as default from Profile Manager.

Essentially, the options are: 1) Use your previous profile, but only with the Beta 131 release 2) Use the latest supported (128.3) release but only with a newly created profile, not yours.

I've seen this problem posted in several forms by people unknowingly on the "release" update channel who got the 131 release and can't implement their profile after downgrading to the esr release. The recommendations I've found to address this problem seem to lead one to a circular return to the problem.

John C

For the past 3 days, I've been locked out of using Thunderbird email. When I try to open it, I get a "Your computer must be restarted to complete a previous upgrade of Thunderbird. Do you want to restart now ?" "Yes/No" option pop-up.

This is infuriating. After several hours, I'm still no closer to being able to use Thunderbird again.

If I choose to restart, nothing changes and I just get the doom loop pop-up again.

If I install uninstall (via Windows Control Panel), again I get stuck with the "Your computer must be restarted to complete a previous upgrade of Thunderbird. Do you want to restart now ?" message.

I can find no useful advice in the Thunderbird help and forums. It's recorded as a known issue. But no viable solutions found.

Using Windows 10. Looks like Thunderbird tried to update to 115.16.2 on 28-Oct-24 (not something I requested).

Please let me know how I can fix it.

And do something to fix this bug (which is a shocker).

I'm trying to install Mozilla VPN but it won't install. The error message is as follows: the installer encountered an error that caused the installation to fail.