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items dragged to overflow menu pop back out, will not stay there - dunno how to fix this.

Hate the "puzzle piece." Involuntarily upgraded to 115.25.0esr and it lost all my bookmarks, addons, history. How do I know which profile was the most recent, before the update added a new profile? How do I find my addons from the previous version? history?

Copied Thunderbird Profile from Windows 10 PC, pasted to Windows 11 PC - No email history or address book

I followed the steps to copy the profile from the old PC and paste it into the folder on the old PC.

Thunderbird is using that profile, but there are no email history or address book.

I created a 2nd account years ago and it has worked since then. Now when I create a third account, it works well but when I disconnect I loose the account and have to recreate it again. How come?

This is pretty shady Mozilla.

When disabling only one setting: "Allow Firefox to install and run studies" it wrecks this site whether logging is or continuing as guest:

https://appointment.questdiagnostics.com/schedule-appointment/as-personal-information

Even after logging in and everything running normal, disabling the studies run by Mozilla and a quick refresh breaks the functionality of the page. All cookies were accepted and the sharing of location was allowed. On a fresh, first run, wide open Firefox people. Literally, the only change that was made was unchecking that one box. In disbelief, i tested it over and over.

Why would disabling a telemetry setting, something that should be optional, cause this to happen? Seriously, what could possibly be the reason. I'd love to hear it.

This was the final nail in the coffin to me and this is since the 0.9x days.

(posted from Supermium)

Thunderbird will not start because the first visible startup action is the popup window: "Please enter your Primary Password". Unable to create a password for the initial,first time re-start of Window if on old machine, option was to avoid this. How to fix? ...so I can set and set and use it.

Hello, I received an email from you asking me to change my Firefox password for account security reasons. When I changed it, all the data synced in Firefox with my email was deleted. This upset me greatly because I lost important data and saved websites. Please restore the deleted data. Thank you.

Hello

What are the restricted sites in the Firefox extension details? What are the sites restricted by Mozilla, as referred to on the page https://support.mozilla.org/pl/kb/dlaczego-niektore-dodatki-nie-sa-dozwolne-na-stronach-ograniczonych-przez-mozille?as=u&utm_source=inproduct#firefox:win10:fx135 ?

Hallo,

mein alter Rechner ist "gestorben", weshalb ich einen neuen brauchte. Vom alten Rechner hatte ich die drei Postfächer, mit denen ich "arbeite" gesichert und nun versucht, diese in der neuen thunderbird-Installation auf dem neuen Rechner einzuhängen, schrittweise, so wie in den FAQs zum Thema Import beschrieben.

Aber: Die alten Postfächer/Inhalte werden nicht angezeigt. Sie sind aber im Zielverzeichnis ".thunderbird" zu sehen und an der richtigen Stelle.

Ich bitte um Hilfestellung zur Problemlösung.

Danke im Voraus.

I can no longer move emails to the folder of my choice. If I drag and drop an email into a folder it never goes there, sometimes it does nothing, sometimes the email disappears like it moved but it never ends up in the folder I drop it into, I search all the folders I have created and the email I moved is GONE! I look in the "Trash" bins I can find and the email is GONE!

Version 128.8.0esr (64-bit) I tried too update the version that is an exercise in confusion.

Side note, the only way to copy and paste the version number is using the keyboard, if you highlight the text in ABOUT, right click it does nothing! No popup window giving you the option to copy. First time in 30 years I have seen this problem.

Thanks in advance.

I have tried all the resetting of passwords and each item in the account settings ( I think I have). Each time when I test it says that the incoming server was found. Nothing about the outgoing server. I'm using Windows 11 and I think the latest Thunderbird version. I really need help to get past this. Further, when I attempt to send with "Control - Enter " keys, The error message uses the wrong server name.

Recently, the Thunderbird email product quit working propertly. It requires me to log into the account each time I wish to open an email. This has been happening for the last week to 10 days. I have to reenter my password each time. Example, I open an email after logging in for the whatever many times it has been during the day, and I need to answer the email but need to get some information first. I go get the information and the email program requies me to log in again, even if it has been just a few minutes. This has not happened in the past. I have been using Thunderbird for a very long time, many many years and never had this happen before. I loaded the program on my laptop that I use when I travel or am not at home. Same thing happens with it.

This is highly frustrating and time wasting to have to do that. There is nothing I have found that shows me how to address this. My phone has a different email program and that does not happen when using the phone. And like I said, I have been using this email program for a very long time and have not experienced this in the past.

Is there access to a user's manual or some quick guide to help me with this? I am not a tech newby, but I'm not an IT professional either, which was why I choose using Thunderbird many years ago. It seemed user friendly at that time.

Thank you kindly for your help. Ken

Hi there all!

I have been using these Add-on's for years and suddenly this week they 'dropped off' - note the greyed out ones that no longer work. I did report the add on's via the button inside to the developers as potentially broken but I'm not sure how I would hear anything back from them about that. After about 4-5 days now they are still not working. I'm unsure why they are greyed out, and the others are not - why these stopped working and the others ok. Here are the screen shots of the ones I'm referring to! They were *VERY GOOD* add on's! I would super love them back.

If you have any advice please let me know.

Thank you.

Hi,

I recently set a custom background image for the Firefox new tab page (and possibly the homepage), but now I’d like to remove or replace it.

I’ve already tried:

   Going to about:config and enabling the following:

       browser.newtabpage.activity-stream.newtabWallpapers.customWallpaper.enabled → true

       browser.newtabpage.activity-stream.newtabWallpapers.ui.enabled → true

   Searching for a gear icon or any UI options on the new tab or homepage – but nothing appears.

I also checked about:preferences#home but there are no visible options to manage background images.

How can I remove or change the custom background image? I’d appreciate instructions, config paths, or a file location where I can delete the image manually.

Thank you! p.s. I'm stuck with a background image that makes my shortcuts unreadable and it's driving me crazy. 😅

As of 7/10/2025, Xfinity Streaming does not open through Firefox. I much prefer Firefox to any other browser so I am a little mystified as to why all of a sudden Xfinity Streaming does not open. I receive my Comcast email through FireFox but when it comes to streaming content, the Xfinity logo just sits there and does not open.