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“My Spectrum email address is [redacted]@charter.net. Spectrum webmail can send and Thunderbird can't receive or send. The outgoing server is mobile.charter.net and the connection times out. I tested the connection from my computer and ports 587 and 465 both respond successfully. Thunderbird is set to No Proxy. when i tried to send today, it gave me this message, "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) mobile.charter.net timed out. Try again." i contacted spectrum about this and now when i try to send, it says nothing and the message never arrives.

I'm on FF 154.0. The power went out here and when it came back and I booted the desktop computer something had changed in FF.

I used to see the active tab as green in the tab bar and yellow for the rest, but now they're all gray until I mouse over the bar and only then does it turn green/yellow.

I struggled with this for many hours trying many //active tab color// solutions I found in searches but nothing got it back to my old behavior.

So as a last resort I tried adding the Firefox Color extension, but when I click Add to Firefox it just turns into a throbber that never changes so it doesn't install. I'm stuck!

Frustrated!!

Good morning -PLEASE help - I had numerous e-mails in my inbox that went away - when I opened this am only yesterday's were in there ......I am sooooooooo IT incompetent

Thank you in advance - some very important stuff was in there.....

The popup appears and when cancelled will reappear after some time then repeat.

This popup appears to have a mind of it's own and should only appear "on click" into a password request box.

This is very annoying and whenever it appears the page being used will not function until the popup is cancelled.

After the latest update of thunderbird on 19-aug-26 I found that I could send emails but not receive them. After researching the problem I changed my server setting for imap to match what spectrum recommends, confirmed I did it correctly by spectrum. Test imap connection fails, but gives no information as to why. Tried 3 dirrent imap server: 1. imap.charter.ner 2. mobile.charter.net 3. mail.twc.com I confirmed with spectrum that I'm using the correct port number.

Is it possible to rill back thunderbird to the last release? Thanks for any and all help. I've used both google and duck duck go AI to look for answers.

The password saver and autofill has worked for me for many years. However, recently (08/18/2026) on many login pages that I regularly use, it will not !! I did discover that, if I supply the first character of the USERNAME, only then Firefox will supply the rest.

I believe I got an automatic update to Version 154.0 yesterday on my Windows 11 laptop. When I opened Firefox after the update I got stuck

My Bookmarks appear to still be available, but my passwords are gone. The passwords are still available on my iPhone and iPad

I have tried syncing to no avail.

I need my passwords. How can I get them back?

account stopped receiving messages after 140.1.1esr update I deleted the account. I then tried to add a new account. It does not ask for a password but only Name and Email. Response: "Unable to log in at server. Probably wrong configuration, username, or password". Two other workstations use the same account and they are not having any issues with the account.

since my last update I am unable to access 4 web sites which I normally use.I have firefox ESR and am on windows 7. Edgesuite is blocking two of my sites, Sephora and Argos and QVC tells me they are unavailable. Scottish Power tells me there is a client error.

Please help.

Even since Thunderbird 141.0 (64-bit) I've had two annoyances. I'm calling them that because it does not stop or prevent me from getting my email, that would be a problem. Here are my two annoyances:

1A. I have a message filter set up to these conditions. Match any of the following From isn't in my address book Personal Address Book From isn't in my address book Collected Address Delete Message

This message filter is for an account that should not be receiving important emails. I wanted all of the junk emails emptied so I would not have to intervene. There are emails coming to this account, but not of great importance nor frequency. Those are in an address book.

1B. This is on my primary account. Match any of the following From contains (I enter email address here) Delete Message

Since I use this account for business/personal use, I filter out spam/junk email this way.

The annoyance is the filters are not deleting the messages as they should and I am having to open the message filter on each account and click on the Run Now, and then it works. It is not 100 percent of the time not doing what it should, but about 65 percent of the time. I've used these two message filters for years and they have always worked. This annoyance only showed up in version 141.0 (64-bit) (+ the ESR Version - see below).

2. My second annoyance is when I click on New Message, then it creates one and I go to Insert then click on Image then Choose File (and pick one) then click Open then the square box appears and I click the OK button. As soon as I click OK, it throws me out of the email/message that I am editing to the main email section before you clicked on New Message. I have to go to the Thunderbird icon on my taskbar then hover over it to see two previews come up, the main email section and the message that I was working on. Then I click the latter.

So there are my two annoyances. If anyone else has experienced this and found a solution, it would be with gratitude if you would share that with me. I will add that I have reinstalled Thunderbird and that made no difference at all. I did have the ESR version and it too had the same annoyances as this version, so it did not help for me to change/install versions.

Thanks!

Hello Mozilla Support,

I’m experiencing an issue with YouTube watch history specifically in Mozilla Firefox.

I am signed in to my YouTube account, and when I watch videos in Firefox, those videos are not being added to my YouTube watch history. However, the same or any other videos I watch on other browsers and on other devices are correctly appearing in my YouTube history.

This appears to be specific to YouTube usage in Firefox.

Could you please investigate whether there is a Firefox-specific issue affecting YouTube watch-history registration, such as cookies, site data, privacy settings, or compatibility with YouTube?

Details:

   Browser: Mozilla Firefox
   Account: Signed in to YouTube
   Issue: Videos watched in Firefox do not appear in YouTube watch history
   Other browsers/devices: YouTube history works normally
   Reproducible: Yes, when watching videos through Firefox

Please let me know if there are any Firefox settings, troubleshooting steps, or diagnostic information you need from me to investigate this further.

Thank you.

On my Ubuntu computer, I find that the New Tab extension does not update like in my Windows computer.

Does the extension update at the same time as on Windows? Is there a way to make Firefox update the extension since going to Extensions does not appear to do that for this extension like those I have installed myself?

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Moderator note: This question has been edited to correct the formatting.

T-Bird is Freezing (Hang?) from start to freeze was 5 minutes and a few seconds. Have turned off hardware acceleration and now it freezes at just under 5 minutes. Have put on updates. Currently 153.0.1esr (64-bit). I have captured profile, and re-installed and picked up the profile. Still freezes. Turned off AV. Still freezes. I have compressed and "repaired" all folders. Still Freezes. I forced folders to get rid of anything older than 30 days. Still freezes.

I have been running the task manager, and T-Bird in frozen state is only using 4.3% of CPU at most. I do not see any slowdowns for any other program. So this is not a CPU constrained problem. And it certainly is not memory constrained.

All this started within the past month and I think it was after I put on an ESR update (don't remember which one).

I can kill T-Bird and start it and it will get mail if any, and will function for about 5 minutes and then freezes (or hangs). The system is set to fetch mail on start up and then every 27 minutes. I am not using Account hub (and don't know what it does).

One oddity -- This is a W11 Home system, and Mozilla keeps saying it is a W10 system. Could this be the problem? Wife is running a lesser laptop. It is also running T-Bird, but her O/S is a W11 Pro and she is not having this problem.

I have used Thunderbird with the same email account for years, creating subfolders and moving emails to the subfolders with no issues.

With Thunderbird 153.0.1, after creating a new subfolder in the account, when attempting to move emails to the new folder, I receive the following error:

"Thunderbird: The current command did not succeed. The email server responded: APPEND invalid flag list"