After a week of trying, Thunderbird does not authenticate my Outlook email account

Using Thunderbird b150, but have tried -esr and regular TB. New install of Win11 26200.8037. Up to date Firefox. Have been trying for a week for Thunderbird to authenti… (tuilleadh eolais)

Using Thunderbird b150, but have tried -esr and regular TB. New install of Win11 26200.8037. Up to date Firefox. Have been trying for a week for Thunderbird to authenticate my Outlook account. Worked with Copilot. Finally found a TB setting, network.proxy.allow_hijacking_localhost, that was set to FALSE. Set it to TRUE and Outlook account authenticated. Able to finally send mail. This was last night. This morning: Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.office365.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. No changed to any programs. Have deleted Outlook saved password. Thunderbird NEVER offers to get password/authenticate. I am truly and sincerely frustrated.

If someone can help me, would sincerely appreciate.

Open 1 9

I'm not able to disable the "to save disk space, do not download:"

I selected the "To save disk space, do not download:" checkbox while I was traveling with restricted internet. I've deselected the checkbox now, but the downloads are st… (tuilleadh eolais)

I selected the "To save disk space, do not download:" checkbox while I was traveling with restricted internet. I've deselected the checkbox now, but the downloads are still restricted. Apparently deselecting did not unset a flag in the settings? Does anyone know how to edit the settings for each account to do this manually?

Open 2

The "send" button is missing from the menu of my emails, I can write replies but not send them.

A "send later" button came up one morning instead of the usual "send" button. When I clicked on the write button to see where the "send" button was, several choices came… (tuilleadh eolais)

A "send later" button came up one morning instead of the usual "send" button. When I clicked on the write button to see where the "send" button was, several choices came up but when I clicked on the "write" choice I lost the other choices and now can't get back to the original write button and still no "send" button appears anywhere on the menu. I can save messages to Draft but still can't actually send them. I can still receive emails, just can't send them! Help!

Réitithe 8 1 215

New Firefox installation blocks access to local files, how do I restore access?

I recently switched operating systems from W11 to Linux (Zorin), and installed a new copy of Firefox. I rely on local web pages I have written for some of my work, but th… (tuilleadh eolais)

I recently switched operating systems from W11 to Linux (Zorin), and installed a new copy of Firefox. I rely on local web pages I have written for some of my work, but the new copy of Firefox does not find the file. For example, when accessing an image, e.g., file:///magrathea/dmpase/home/index/coastal24.png, Firefox gives the message:

File not found Firefox can’t connect to the server at local file What can you do about it? Check to make sure you’ve typed the website address correctly.

The address is correct, that is, the file resides at: /magrathea/dmpase/home/index/coastal24.png and the user does have permissions to read the file. I've tried adding up to five '/' characters to the beginning, and I have turned off all of my installed add-ons, but without success.

An apparently related problem is that double clicking on a '.htm' file also changes the address, for example, from '/home/dmpase/Desktop/index.htm' to 'file:///run/user/1000/doc/f07a8988/index.htm'

And finally, the "Brave" browser is able to read the files with no errors.

How do I fix this for Firefox?

Open

How to adblock on IOS

Hi, The question may asked for a lot but... I have a Mozilla account with about 1000 bookmarks, years of hystory and tons of passwords, in brief, i'm locked to Mozilla ec… (tuilleadh eolais)

Hi,

The question may asked for a lot but... I have a Mozilla account with about 1000 bookmarks, years of hystory and tons of passwords, in brief, i'm locked to Mozilla ecosystem.

Someone gifted me an ipad, so my first thing is to install FF on this to enjoy the web as i like (without ads btw).

As always on new devices, i've looking for uBlock Origin wich is the only serious adblocker on the market.

What a deception to see that it's not possible to install any extension on IOS...

Yes, i can use the ublock "extension" for Safari but then i cannot sync with my other devices.

Guys i dont know what to do, all my data is on my Mozilla account because i trusted them for years, but my iPad suddendly goes unusable because the web with ads is unusable and the web witout my Mozilla account is unusable.

What about a fork with uBlock integrated by default ?

Thanks a lot

Open 5 14

2 Spamordner pro Mailadresse, 1 ordner Löschen

Hallo, ich benutze Thunder in der neuesten Version unter Win11 und verwalte 3 Mailadressen darunter. Nun ist mir aufgefallen das auf einmal 2 Spamordner pro Mailadresse a… (tuilleadh eolais)

Hallo, ich benutze Thunder in der neuesten Version unter Win11 und verwalte 3 Mailadressen darunter. Nun ist mir aufgefallen das auf einmal 2 Spamordner pro Mailadresse angelegt sind aber nur ein Ordner benutzt wird. Wie kann ich die unbenutzten Spamordner löschen ??? Mailadressen als IMAP angelegt 2 Mailadressen unter Seuresmtp.t-online.de 1 Mailadresse unter Web.de Freemail-smtp.de mit Googleübersetzer


Hello, I'm using the latest version of Thunderbird on Windows 11 and manage three email addresses with it. I've noticed that two spam folders have suddenly been created for each email address, but only one folder is being used. How can I delete the unused spam folders?

Email addresses set up as IMAP

Two email addresses are with Seuresmtp.t-online.de One email address is with Web.de Freemail-smtp.de

Open 1

TB randomly autocompletes with an old address

I am using TB 140.9.0esr (64-bit) on Kubuntu 25.10 but this has been true for some years. Mostly when a start a new Email address whether in the To:, cc: or bcc: fields… (tuilleadh eolais)

I am using TB 140.9.0esr (64-bit) on Kubuntu 25.10 but this has been true for some years. Mostly when a start a new Email address whether in the To:, cc: or bcc: fields TB does a very good guess after a few letters about the address I want. However, every so often, perhaps 5% of the time it will pick the correct person but I won't notice that it has picked an old address for that person. It seems to happen in bursts, so three times in the last few hours for two different addressees. I realise that I could shift the old addresses for people to the notes section of the address book but I would rather not as I am hoping that one day TB will have the ability to search for all Emails to/from someone across all the addresses they ever had, current or deceased. Is there a way you can stop TB suddenly changing its guesses about the addresses for a person? Or could you add a way to tell TB in the address book that addresses are dead and should never be offered as addresses to send to?

TIA,

Chris

Open

Firefox not accepted at my bank

My Firefox browser works just fine, and the "about" tab says it is up to date with ESR, but Chase.com won't let me log in, saying I need ESR. If I already have it, what g… (tuilleadh eolais)

My Firefox browser works just fine, and the "about" tab says it is up to date with ESR, but Chase.com won't let me log in, saying I need ESR. If I already have it, what gives?

Open 5 1 74

Thunderbird configuration and Infomaniak mail/calendar

Using Thunderbird to check emails and the calendar for an Infomaniak account: The account was active and working properly. After switching this account to 2FA, Thunderbir… (tuilleadh eolais)

Using Thunderbird to check emails and the calendar for an Infomaniak account: The account was active and working properly. After switching this account to 2FA, Thunderbird consistently requested a username and password during synchronization. After some research, the solution is as follows: you need to create a new app password with Infomaniak, then ensure that Thunderbird saves the password and that the “Require device authentication...” option is disabled. Would it be possible to provide a complete step-by-step guide for next time? Thank you.

Open

Please change the Toolbar back

When I want to search something I usually open a new tab (Ctr+T) then quickly hit Tab so my typing indicator goes from the Address Bar to the Search Bar, but with a recen… (tuilleadh eolais)

When I want to search something I usually open a new tab (Ctr+T) then quickly hit Tab so my typing indicator goes from the Address Bar to the Search Bar, but with a recent update there is now a "Search Selection" part that is in the way so I have to hit Tab twice.

I know this seems petty but I have been the simplest happiest minimalist user for the past 25 years and I've never had issues with Ctr+T followed by Tab to search something. Why did you implement a change that I am sure nobody has ever asked? Please revert it back or explain to my fatigued mind how to do it if it is possible.

Open

Thunderbird increases the size of email message

Knowing that an email message should be kept below the size of 25MB, I was trying to make my attachments smaller than that. Yet when I was sending a message with no text … (tuilleadh eolais)

Knowing that an email message should be kept below the size of 25MB, I was trying to make my attachments smaller than that. Yet when I was sending a message with no text and 1 attachment the size of 21.5MB, I got a warning that I was trying to send a message the size of 29.4MB. Where does this come from?

Open 3 2

IP Address Temporarily Blacklisted

Recently switched ISPs to a fiber internet company. After the switch, now whenever I try access my comcast email tunderbird gives me a message that my IP is temporarily … (tuilleadh eolais)

Recently switched ISPs to a fiber internet company. After the switch, now whenever I try access my comcast email tunderbird gives me a message that my IP is temporarily blacklisted. I get two messages. One is a windows notification that says the blacklisted message, and then a popup message from tunderbird that it cannot log in. I have contacted my ISP to ask them what's up with the blacklist, but what's weird is that I can seem to access these accounts fine through Outlook, which would seem to indicate that there is some issue with tunderbird. I'd really rather use tunderbird than outlook. Can somebody help me with this?

The few articles I could find on this all suggest changing the IPv6 setting but I checked that and it is already set to what they suggest.

I tried deleting the account and recreating it in tunderbird, but it won't go through it says it can't log into the account.

Open 12 7

nach Update: Wie komme ich an Inhalte vorher offener Tabs? Chronik ist leer.

Firefox hat am Donnerstag auf meinem Windows 11 - Laptop ungefragt ein Update veranstaltet und sich neu gestartet. Wie komme ich jetzt an die Inhalte der vorher offenen T… (tuilleadh eolais)

Firefox hat am Donnerstag auf meinem Windows 11 - Laptop ungefragt ein Update veranstaltet und sich neu gestartet. Wie komme ich jetzt an die Inhalte der vorher offenen Tabs? Bei Edge konnte man "alle wiederherstellen" anklicken, hier habe ich sowas nicht gefunden, Chronik ist leer.

Open

Email List Columns Changing Widths on Thunderbird re-Opening

I'm running Thunderbird 140.5.0esr (32-bit) on Windows 10 Pro Build 19045. After the last few updates the columns in the email listings are changing widths from what I'v… (tuilleadh eolais)

I'm running Thunderbird 140.5.0esr (32-bit) on Windows 10 Pro Build 19045. After the last few updates the columns in the email listings are changing widths from what I've set them, this seems to happen after I close then reopen Thunderbird; which I'm having to do more often these days to resolve weird calendar malfunctions. For instance, the data column would appear so narrow that only the month/day show with "..." at the end, when I know I've looked at this yesterday with the full view of the date and time showing. I've reviewed my options and I've set them individually, set them globally and it makes no difference. Of course I've rebooted, etc. I have over a hundred local folders and they all change differently, of course some look the same but others don't. Most have the same column headings selected but it doesn't seem to matter. Some have the "Correspondents" column selected but many don't.

This is very irritating and I'd like to know why Thunderbird is doing this, and more importantly, how can I prevent this behavior in the future. Thanks,

Open 23 97

Wont send address list

I often have problems send multiple emails. Sometimes if I try three times they go. At the moment refusing to send. Is there a maximum I can have ? Could you you give me… (tuilleadh eolais)

I often have problems send multiple emails. Sometimes if I try three times they go. At the moment refusing to send. Is there a maximum I can have ? Could you you give me so setup tip? Difficult because it works sometimes.. Suggestions please, cant work it out. John Dobson

Open 3 2