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Your current build of firefox runs substantially worse for me than previous versions. I use Firefox because it is non-chromium, which typically offers more user freedom and control, but these new performance settings which cannot be edited individually, but are controlled automatically, are overstepping. Please advise how I can change the settings on a deeper level than simply switching off hardware acceleration. I'd like to limit multiprocessing primarily, but I would also like to have access to other performance settings. Further, I would like to have more control over how Firefox can access my devices. Please advise how I can access and edit the full list of permissions available to Firefox. I ask for this in the interest of transparency and personal data protection.

Bonjour, Sitot la version 150.0.1 installée automatiquement, je ne peux plus ajouter de pièces jointes. Merci de debugger

Cordialement**

Brigitte Moulin

I am currently having a challenge browsing my offline videos downloaded on YouTube, and I noticed this since I recently updated my Mozilla browser. Formerly, even when my internet is down, I could open YouTube, and it would take me to my offline downloaded video, but now, when I am offline, it just shows Check your internet connection.

Why thunderbird needs a specific version ? Why the newest versions aren't compatible with windows 7 ?

I have more than 100 pc running mainly Mozilla tools on windows 7 which does the job perfectly. I don't want to pay $15000 fees for an unnecessary upgrade.

What new functionnalities windows 11 brings that prevent Mozilla to compile the same versions for all windows OS ? This forces people to abandon their windows 7 and to pay fees to Microsoft. I understand the later, he does his business. But why Mozilla helps it ?

Hi, Both my wife and I have been using both Firefox for many, many years and only realised today that I did not have an account. I have two problems, both starting at the same time, (1) every time I use my computer (now both a desktop & a ASUS 17 laptop) my current tabs I don't have my original tabs which I rely on having when I have a project running, and (2) when I start my computer I have to go through the 'ticket the squares with bicycles in" to verify I'm human. If I close Firefox and very shortly open it again I don't get the check. For the first problem I've checked the Settings and they are as I have always had then to restart tabs that were present on shutdown. For the security check I've googled an explanation/fix but most times I get a suggestion to look at some setting which I can't find anywhere. Hopefully you can answer my problems. I synced with my iPhone 15, not too sure that I had any success as the prompts didn't line up with the displayed requests. My version of Firefox is 157.0 (64-bit) running on Windows 11 Version 25H2 (OS build 26.200.9457. I have updated to latest version Thank you, KenDiment

Dear Thunderbird Support Team,

I am writing to report an issue with custom message tags in Thunderbird that started occurring around September 28, 2026 (likely following a recent update).

Issue Description: The problem applies to all folders (Inbox, Sent, custom subfolders, etc.) and is strictly isolated to user-created (custom) tags.

When I apply a custom tag to any email, the tag visually attaches to the message. However, as soon as I switch to another folder in the folder pane and then return to the original folder, the custom tag disappears completely.

Key Observations:

No Relation to Filters: This issue happens with regular emails in any folder, with no filters involved.

Custom Tags vs. Default Tags: This affects only custom tags created by the user. Default built-in tags (e.g., Important, Work, To Do) save correctly and persist after switching folders.

Timeline: All custom tags assigned before September 28, 2026, are still preserved correctly on older emails. The issue affects any new attempt to set a custom tag after this date.

Steps to Reproduce:

Select any email in any folder.

Apply a user-created (custom) tag to the email.

Observe that the tag is visually assigned.

Click on any other folder to switch views.

Return to the original folder — the applied custom tag is gone.

Could you please assist in resolving this issue or suggest a fix/workaround? Custom tags are essential for our daily email management.

Thank you for your help and support.

Best regards,

Ihor Hirnyi E-mail: ig@zrn.com.ua

In Thunderbird, the “attach” button stopped working when sending a message, although the “drag and drop” feature still works. Could you suggest what the problem might be?

Ever since the last update, I can no longer watch recordings on xfinity stream with Firefox. What happened? Can I fix it? I sometimes have to start watching programs late, but they wont play while recording. I can watch those same recordings when they are finished, but not while they are still recording. I can watch those same recordings while recording on Chrome and Safari so it's not an xfinity problem. But for some reason not on Firefox anymore Is there a setting I need to change? Thanks Ron

Thunderbird will not download mail. It sends this: "The certificate for inbound.att.net does not come from a trusted source." "Location: inbound.att.net:995" Then it sends the data with the certificate information. I am not a programmer, I do not understand what I am supposed to do to get it going again.

In version 157, the favorites icon in the address bar and the download progress bar have turned gray instead of the previous blue. Is it possible to revert these elements to blue?

Mozilla Account works normally directly inside Firefox, but logging into Mozilla Accounts through Thunderbird's Add-ons manager fails during the Firefox handoff.

Steps to reproduce: 1. In Thunderbird Add-ons, click Log in. 2. Thunderbird redirects to Firefox, showing "Continue with Mozilla account". 3. Click Continue -> Firefox displays "You could not be logged in. Please try again."

Troubleshooting already tried:

• Created a brand-new Thunderbird profile (thunderbird -P) — same failure occurs.
• Cleared cookies/site data in Thunderbird and cleared Firefox cache.
• Disconnected existing Thunderbird/Add-ons connections from Mozilla Account dashboard.
• Extensions and add-ons themselves install and download normally.

Just checked email this morning and my sbcglobal.net account is not connecting in Thunderbird. I hit get messages and it only connects to my gmail account. It connected just fine yesterday, and I did not change anything on my PC or in Thunderbird, so I ruled that out. I have since tried several suggestions from the internet, google, and Mozilla websites. I do not have a VPN and no changes to firewall settings either. I tried setting it up with IMAP settings and with POP3 settings and always get the same error. (attached pic) Also used my saved password for the account which did not work, and then tried the ATT secure key code which did not work. I deleted the entire account and tried to set it up from scratch but that did not work either. Looking for any other suggestions to get this solved. Thanks!

https://kolhapursports.co.in/school/kheladu.php?smcode=kheladuList&smvalue=m1 this side opened any tab

Sorry if this is addressed elsewhere but I could not find it. After a recent update Firefox (Windows 11) started each website file download (mostly pdfs) at the Downloads folder. Previously, it would start at the most recent folder to which I downloaded a file. Since nearly all of my downloads are in a few neighboring folders way down the folder tree, I now have a ton of navigating to do for every single download. This is not sustainable. I have done a lot of Googling and investigated several suggested changes to about:config. I changed browser.download.folderList from 1 to 2. I made sure that browser.download.useDownloadDir is false. No effect. Any other suggestions? I am considering abandoning Firefox altogether. It has issues with some parts of the Medicare website. And an earlier update seemingly eliminated my ability to set a particular web page (Google) for new tabs, due to which I often wait a while for the page to appear, then realize I must click on Home. I like Firefox , but too many issues are accumulating and I can't seem to find solutions. Thanks for any help.