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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.

I'm currently running Thunderbird 140.9.1esr and it shows an update available to version 140.10.0esr. However, when I click on the update button, it shows "downloading" but it stays at 0 bytes and will not download the update. All previous updates to my current version automatically downloaded and installed after I clicked on the update button. How do I fix this or is there a problem with 140.10.0esr? Thank you!

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.

I have set my phone to switch between light and dark mode on schedule. Everytime it does so, Firefox doesn't theme refresh correctly. Usually, the search bar will be on the old theme and I'll need to close Firefox as an active app and restart it to refresh correctly. This also means websites looking for theme refresh signals from the browser do not pick it up correctly and thus the browsing experience is visually jarring. This issue has been around for more than a year. Reinstalling Firefox hasn't helped. This is a bug in the browser code and can be reproduced on my Android tablet as well.

I have Thunderbird on another PC that shows the incoming emails with the contents with the contents displayed under the email list, yet on my new PC I cannot seem to get that setting. I have to double click an email and it opens a new tab. I have used your help and also YouTube to no avail.

Since updating to version 150 (and 150.0.01) my title bar is missing. Sure, I CAN get it back with F11 (2 times) but it is annoying to have to do that every single time I start FF.

There is no longe an option (to checkmark or remove checkmark) in the right-click menu to show the title bar. (it used to be an option) I want the option to have it there permanently, or not. It should be up to me, not some dev somewhere that does not like it.

after working in firefox for a while and using a number of windows and the I close firefox with multiple windows open in my session. if i open it again and keep doing this for a while and then have closed firefox, eventually I can no longer open a firefox window and get a message the I have too many windows opn and can't open more till i close the open windows. i hover over the firefox app and all the previously closed windows are stacked up. why didn;t they close when i exited my firefox sessions. why are they still there and clogging up the system?

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.

Hi. Since the last 2 updates, my Bell sympatico email through T-bird cannot SEND anymore emails (No errors are given but the email never comes through). I can receive emails without issue and when I use another tool (like Outlook or go directly through my browser, the sympatico emails come through) I attached the settings for the SMTP in a screenshot if that could help.

Any idea how to fix this?

Tx, Robert Z.

After completion of the last Firefox update (150.0) I am no longer able to search ANY items in ebay. I can load the ebay page but if I click on any specific items (to view or bid on) I get a blank screen with an error message... Service Unavailable - Zero size object The server is temporarily unable to service your request. Please try again later.

Reference #15.65761cb8.1777403477.15458d89

https://errors.edgesuite.net/15.65761cb8.1777403477.15458d89

I have cleaned cookies and deleted history. I have shut off and restarted my PC. I have gone to my backup laptop and using Microsoft Edge, accessed every ebay page without any issues. I can only assume that this issue is with Mozilla Firefox.

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?

When copying and pasting from one application to another, by using Ctrl + Shift + V to paste without format to Google Docs, I keep getting a "Paste" pop up that I've never gotten until now. It keeps getting in the way and I don't see a way to remove it.

It's making copying and pasting very difficult and is driving me up the wall.

Default homepage is yahoo. Since the update to version 149, if I do a search from yahoo, the new tab that opens with the search result is blank most of the time. I have to click reload for the search results to show up.

Is anybody else having that problem? Seems to be yahoo search specific but not 100% sure.

Dan

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?

Show Helpfulness Votes Chart Revision Status S Editor R Comment

Mar 23, 2026, 3:35:34 AM Current M AliceWyman Image:Fx148DataCollection-OptOut, removed pre-fx136 content

Apr 22, 2025, 3:07:10 AM Reviewed M Kunal Anjankar I have made it simpler.

Mar 14, 2025, 2:12:33 AM Approved M AliceWyman Intro and other edits; collapsible markup

Mar 8, 2025, 6:39:29 AM Approved AliceWyman Related content: Mobile link

Mar 7, 2025, 9:31:52 AM Approved AliceWyman updated link to redirected article

Mar 6, 2025, 8:35:52 AM Approved M Mozinet minor edits, including fixes for serial commas (see guidelines)

Mar 5, 2025, 12:29:49 PM Unreviewed AliceWyman TOC; edits due to redirect of Telemetry article (see discussion)

Feb 28, 2025, 11:31:50 AM Approved AliceWyman for fx136 note: DAU (daily active users)

Feb 27, 2025, 6:30:01 AM Approved AliceWyman How to turn off...Desktop {for fx136}

Feb 26, 2025, 4:46:04 AM Approved M Mark Heijl minor edits (added empty lines) and removed defective wikilink (replaced by template at top of article)

Feb 25, 2025, 12:55:09 PM Unreviewed AliceWyman edits for fx135 and below

Feb 25, 2025, 12:45:54 PM Unreviewed AliceWyman URL-> wikilink; Related content; removed unneeded keywords

Feb 25, 2025, 11:22:13 AM Approved M Dayani Lucia G.F. Added keywords

Feb 25, 2025, 10:28:19 AM Approved M Dayani Lucia G.F. Bug 1931072/ Bug 1931077/ Bug 1931075

Dec 13, 2024, 9:58:31 AM Approved Lucas Siebert Adding Bug 1931077/ Bug 1931075 Dec 13, 2024, 9:34:26 AM Approved MT Lucas Siebert Placeholder Bug 1931072