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I've appreciated using Thunderbird for an ad-free Hotmail experience for quite some time. I've changed my Hotmail password every few weeks lately and Thunderbird worked fine when I entered the new password at the prompt when Thunderbird started.

Just now however, I needed to get into my Microsoft account that uses the same password as my Hotmail account. My login to Microsoft failed. Trying to understand why, I looked in Thunderbird at the saved password for Hotmail's server:

oauth://login.microsoftonline.com (https://outlook.office.com/IMAP.AccessAsUser.All

https://outlook.office.com/POP.AccessAsUser.All 
https://outlook.office.com/SMTP.Send offline_access)

The saved password was a 464 character long ASCII string totally irrelevant to the password I'd selected for Hotmail and Microsoft.

I went through the password change process for Hotmail, was then able to get into my Microsoft account and restarted Thunderbird. As usual, Thunderbird asked for the new password. I entered it and was then able to receive new mail from the Hotmail server in Thunderbird. However, again, the saved password in Thunderbird for Hotmail was not the password I'd entered.

Next, I deleted the saved passwords in Thunderbird, restarted it and this time it prompted me to be sure I'd downloaded it from a reliable source. I've never seen that prompt before. It came with my Linux Mint installation, so I thought it would be safe, but again there's an irrelevant password saved for my Hotmail account.

It's like it eventually changes my password for Hotmail and Microsoft since I can get mail through Thunderbird with the odd password it saves, but if I use what should be my password for Hotmail or my Microsoft account via a web page interface, the password doesn't work.

I'll have to stop using Thunderbird if this continues.

Hello, I have a weird bug with the firefox browser causing weird graphical glitches only on the main screen when a HDMI cable is plugged in on the duplicate mode. I have found that is is only on firefox and not my desktop or any other programs. Firefox is up to date and the issue is fixed when the HDMI set to extend

I hope you find out why this is happening and fix it swiftly Thank you -Dominic

Since Thunderbird was upgraded to 115.10.1 (64-bit), it now fails to send SMTP messages with the following error.

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) ***.mail.pairserver.com was lost in the middle of the transaction. Try again.

This affects all six(6) accounts in Thunderbird, all of them can receive and edit e-mail messages; however, all of them fail to send e-mail messages.

Prior versions of Thunderbird have worked with this configuration for many years.

Other e-mail clients such as Evolution do not have this issue and I have confirmed with my provider that Thunderbird is no longer sending e-mails.

Any thoughts on how to roll back Thunderbird until this issue is resolved?

I have a Google Calendar, in which I manage My Tasks. I can't see my existing tasks in Thunderbird, and I can't add new tasks to the Google Calendar. New Task in Thunderbird is greyed out and the field next to it has the writing: "Please select a calendar that supports tasks".

I have seen that many had the same issue and understood that it is linked to how My Tasks in Google Calendar itself works. Is there really no workaround whatsoever?

If not, how can I manage tasks and share them with someone else (who uses Google Calendar or Apple Calendar, but does not use Thunderbird)?

Thanks in advance for your replies!

I'm debugging other problems. I go to troubleshoot mode and come back and my fonts changed.

I head into settings to fix this. Attached the view of my change while debugging to make it really big.

This does nothing. Thunderbird doesn't change the font, the size, nothing.

I'm starting to think I'm losing my mind.

For some reason, recent updates caused my Firefox address bar to misbehave.

I have already murdered the unwanted search engine suggestions which the standard settings failed to kill - I just kept turning things off in about:settings until the garbage feature died.

However, I am still unable to address the most annoying bug.

When I start typing in address bar, the pop-up box with suggestions, rather than attach itself to the bottom of the address bar, goes to some imagined, predefined anchor point which is off screen, somewhere outside the confines of the window. As a result, I see some suggestions, but I no longer see what the hell I'm even typing. I am attaching a screenshot. This is super annoying, as I am literally forced to either use bookmarks, or type out urls in notepad then paste them over.

Anyone can help?

Hello

Since an update from a few days ago (May 2024), my address bar/search bar is now basically outside of my PC screen, see here: https://vimeo.com/948314161

It's not a local problem, it's also happening on other PCs/Laptops I have.

How can I fix this? PS should the answer be that I need an add-on or anything like that, then it's bye bye Firefox, hello Chrome

Thank you

I have two Google (yes, Google, not gmail) accounts. When setting up my gmail in Thunderbird, I was prompted to enter the Google account. I have entered the wrong one. Consequently, I cannot access my gmail: "Unable to log in at server. Probably wrong configuration, username or password."

I have tried all ways I have found in this forum to get rid of it again, such as editing the prefs file, but to no avail.

How can I remove the Google account from the Thunderbird settings to be able to insert the new one?

Thanks for your help in advance, Matt

Attached image, how is it possible that Thunderbird allows Bit Defender to install a spam add on and then protects it to so I can't remove the add on ?

This is just mind boggling.

Further, there is a "Why" link which should explain any logic to doing this, note there is not, and it explains nothing of the sort.

I have better things to do than run behind thunderbird to delete an extension which thunderbird has allows to "Can't be removed".

Is thunderbird with us ? or against us ?

𝐇𝐨𝐰 𝐭𝐨 𝐏𝐫𝐞𝐯𝐞𝐧𝐭 𝐔𝐩𝐝𝐚𝐭𝐞𝐬 𝐭𝐨 𝐓𝐡𝐮𝐧𝐝𝐞𝐫𝐛𝐢𝐫𝐝 As a regular here, I have frequently seen requests on how to prevent updates to Thunderbird. For most people, I believe the option found at Settings>General is sufficient. I also believe the default setting to automatically apply updates is appropriate if users do periodic backups. But I respect there are those who have strong feelings on the topic, and those who run a business and rely on stability more than new features. I acknowledge this information may be available elsewhere, and possibly superior in its approach, but this does work. So, here are the steps:

-   Create a simple text file called policies.json 
-   Enter this text into the file: 

  {
     "policies": {
        "ManualAppUpdateOnly": true,
        "AppAutoUpdate": false,
        "AppUpdateURL": "https://yoursiteisnothere.com"
      }
   }

- create a folder named ‘distribution’ and store it in the folder where thunderbird.exe resides. For Windows, that would be normally be C:\Program Files\Mozilla Thunderbird\ or C:\Program Files (x86)\Mozilla Thunderbird\
- place the file called policies.json in the distribution directory
- start Thunderbird 
- to verify this, click Settings>General and scroll down to Updates. There, you should see the words, 
          “Failed to check for updates.”  (See attached screenshots for examples.)

If you later decide you want an update, the file or folder must be removed or renamed. If changes are made while Thunderbird is running, you must exit and restart for the change to take effect.

NOTE: My suggestion to persons using this technique is to, at least twice per year, download the latest version, test to your satisfaction along with any addon updates. The intent is to stay relatively current for releases, security, and support. To never update is not recommended.

Give that I use TB as my desktop client to access my nyu.edu email (provided by google), and that recently I updated my password as periodically requested by nyu admin When I try to access nyu email a pop up screen come up asking to authenticate with imap.gmail.com. I click next and get a 403 Access Forbidden error (Authentication failure while connecting to server imap.gmail.com.)

Solutions I have tried: 1. Clear cookies, history and cache on browsers and TB; 2. Changed default browsers (Ffox, Ch, Edge); 3. Deleted account in TB and created it again using instructions here https://www.nyu.edu/servicelink/KB0016473 4. Accessed my nyu email on browser to check user name and password. It works. I can access the email.

Nothing seems to work. Still get 403 error. As a result I am unable to authenticate and hence use the email account in TB.

Hello

We've made a donation, but we're still getting the annoying "DONATION" notice popping up at the browser.

WE WOULD LIKE TO DISABLE IT PLEASE. PLEASE PROVIDE THE INSTRUCTIONS TO DO IT.

Thanks Vitor Neves CMS INC.

When I try to play a video on Firefox desktop, it takes it a long time to load. Once it has loaded, whenever I pause it for more than a few seconds, or if I try to skip around the video (either by clicking around in the loaded section of the progress bar or using +/- seconds buttons), the video begins buffering again before the video resumes. This makes it extremely difficult and frustrating to watch anything that requires me to pause, rewind, or fast forward. I've noticed this issue affect multiple video viewing sites, such as YouTube, Vimeo, and Netflix. My roommate also uses Firefox, but doesn't have this issue, so I know it's not a problem with my internet. I thought it might be a problem with my computer, but I tried to replicate the issue in Chrome and everything worked fine there. The issue has persisted almost a week. I have:

• Rebooted my computer several times
• Deleted my history/cache
• Disabled my extensions
• Turned off Java scripts in firefox (this disabled my ability to load sites like YouTube completely, so I turned it back on)
• Updated my computer
• Updated my graphics drivers
• Refreshed firefox
• Uninstalled and reinstalled firefox (and rebooted my computer)
• Uninstalled and reinstalled firefox AND deleted all the data it stored on my computer (and rebooted my computer)

I am currently using version 123.0.1 of Firefox. My OS is Windows 10 22H2.

Support,

The USPS website does not work properly with Firefox!! The Home page loads okay but there are multiple other issues with links not working. For instance all of the links under Quick Tools do not work except this one: https://www.usps.com/manage/po-boxes.htm. Other things don't work either.

Everything works fine that I tried with Google Chrome though! Please address soon.

Thanks