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To be clear, I seriously doubt the problems I am encountering are TB's fault! The problems may be my fault since I've grown older, I've tended (believed) using new versions of software present my mind a BIGGER challenge than using the older software/version I have been successfully using? I'm still using Version115.10.1

After our ISP chose to start using Zimbra Oct. 7, 2025 and their tech support could not assist me in getting TB working the had me remove POP3 settings for TB and change to IMAP with their software.

FINALLY someone helped me get TB working with IMAP. For 3 days grrr. Now the ISP says I need to use their web mail, Zimbra.

So might downloading the current TB version and somehow get the In box, all the folder contnets etc. over - into the new TB help?

I was going to backup everything tonight, now I have little to NO hope, without help!

THANKS & remain WELL plus be SAFE!

Robin

I set up some custom (number of days in advance) calendar event reminders of my travel plans in my Google calendar via my cell phone. I have my google calendar linked to thunderbird on my pc. I had accepted the invitations before I left on my trip. (looking at the details of the reminder it shows: "You have accepted this invitation.") I returned home from my trip and have several old flight reminders popping up in my pop-up box in thunderbird. I can try to dismiss them, by clicking on the dismiss button, but nothing happens. They do not disappear. But recurring birthday events from my google calendar, which are also in my T-bird calendar, are able to be dismissed from the T-bird Reminder pop-up box. A new event I created today in google calendar, flowed into T-bird with two custom reminders, but no event invite. (Is the issue with accepting invites?) I have tried unsubscribing and re-adding my google calendar, to no avail. I have tried to clear the T-bird startup cache, both with and without being subscribed to my google calendar, to no avail. Any help is appreciated by this confused user, thank you in advance.

Firefox may still be downloading the latest update in the background even if the “About Firefox” window says it’s up to date. Updates are applied after restarting Firefox

Since update to latest version of Firefox, I cannot access content on Facebook. All I get after long wait is the blank screen with the Facebook logo in the middle and Meta logo at the bottom. No problem before update. Other sites seem OK but take much longer to load. I can get Facebook with MS Edge. I'm using Windows 10 on PC.

Marrose

I never had any problem with the older version of Thunderbird, Mailwasher Pro was able to send the mail I was keeping, right into Thunderbird, and ONLY then did it come into Thunderbird. With the new Thunderbird downloaded version, 144.0.1, If Mailwasher is not already open to receive any email from Comcast, It goes right into Thunderbird before I open Mailwasher Pro and choose the emails to keep, mark as spam, or blacklist. It has become a real problem, but I can find no way in the settings to set it as receiving the email 2nd, after Mailwasher "washes" the mail to it. Why did it always work correctly from the beginning, but not now?

Hi all,

I just updated from v143.0.3 to v145.0 and once again some small breakages in my userChrome.css have occurred.

Things have become too rounded, including tabs, the URL bar, and the chevron button.

I've solved the tabs radius issue with the .tab-background {} selector.

However, my URL bar now has rounded corners. I would like it to be square.

Please see the attached images for before & after views of my URL bar.

I have this code in place...

#urlbar > #urlbar-background, #urlbar[breakout][breakout-extend] > #urlbar-background, #searchbar
{ border: 1px solid #a1a6b5 !important; outline: none !important;   border-radius: 0px !important; }

I've also tried this as a standalone...

#urlbar-background {
  border-radius: 0px !important;
}

But the above has no effect, although it did previously.

Is there a new way to control the radius of the URL bar?

Also, my chevron button became too rounded. Is there a new way to control that as well?

Thanks.

How do I confirm that the AI that was recently put into the browser is not working? I want nothing to do with this technology, if it is not able to be disabled then I will switch browsers.

Hi, Since the search open tabs function is part of the overflow button in a horizontal tab layout, when you switch to vertical tabs, you lose that search function. Is there a way to add it to my vertical tab layout? Thanks, Scott

I was experiencing that one bug that locks the sidebar from opening on hover (even with the option enabled) and I was somehow able to change the size of the sidebar while trying to get it to start working again (IDK why I didn't just close and reopen my browser because I know that fixes that) and now my open on hover sidebar is the biggest it can go and it is genuinely unusable. I can't change the size of it while it's on the open on hover option, but changing it back to the fixed/static sidebar and then editing the size does not carry over when I re-enable the open on hover option. Objectively, this is really dumb and kind of hilarious. I know I am dumb for this.