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I've been using Thunderbird for years and have never had this problem. Since the upgrade today, after I run Thunderbird once and close it I can no longer start it up again. I have to reboot or use Task Manager to kill it in order to run it. This is on Windows 11. Please help - not an acceptable workaround for long. Optionally, how do I downgrade to previous version? I should know better than allow automatic upgrades.

Adding a couple images below, when it has started successfully it shows as one of the Apps in Task Manager. When I close it, Thunderbird drops into the Background Processes but doesn't end. I have to kill it here in order to start it again.

When displaying an iframe video in a popup, clicking the close button and other click events do not work. This issue only occurs in the Firefox browser on Android, while it functions correctly in the Firefox browser on iOS.

Is this a default behavior.

Just set up Thunderbird - inbox for email account mainly looks fine, except for entries at top of list with only time shown in last column - these are a variety of dates. After that section, my list of inbox messages proper starts. Can I get these initial entries not to display? (or if they have to, why?)

I have two computers, one older with TB 115.9.0 32 bit, pop. The other has 115.9.0 64 bit, imap, same email address. I have tried to merge them, but when i do the Thunderbird Import folder has zero messages and no subfolders. I also tried changing the old TB to IMAP, didnt work: "configuration problem". Any help would be appreciated.

We have been using Thunderbird with a Cox email account. Cox has just transferred all its customers to Yahoo. I want to use Thunderbird with Yahoo. How do I set that up?

Lately, Firefox for Android has started "forgetting" active tabs. I have changed absolutely nothing in the settings. Most of the Active Tabs I've had for years are gone. Now I only have about 5 left & they get corrupted every couple of days. For example, the 3rd one in the attached Screenshot: I'm playing "catch-up" on old Guardian crosswords, currently on 15,179. At irregular intervals, say every couple of days, it gets replaced with an older one, 15,166 for example. I suspect it must have been changed in the Version released on March 19, 2024 (124.0)

Hi, Before Firefox's Version 125.0.1 (64-bit) latest update I could download any file from my safe office environment, behind firewalls, VPN, ... Now despite of unchecking the "Block dangerous downloads" I'm still unable to download files. I have Windows 10 on my laptop.

Here are the steps: Click on a file, Save "File not downloaded. Potential security risk." Click on the message - Allow download The result is a file with content "HTTP Status 405 – Method Not Allowed".

Please help me to work the downloading again. I am aware of the safety but I want to switch off this feature.

Thanks in advance for help, Tibor

Prior to update 125.0.1 corporate intranet users could download PDF files from our Line of Business applications / Webpages. Today after the latest update the PDF files download but are corrupted. The site was added to the trusted webpage without improvement.

Adobe Acrobat Reader could not open ********.pdf because it is either not a supported file or because the file has been damaged

When I open github it loads incorrectly as shown in the picture, after I press F5 to reload the site load fine. I have tried deleting cookies and I am using any ad-blocker. Any help? Thanks.

Hi, all of my passwords and usernames have been deleted. When I go to the passwords section of my account all that is listed is the web addresses. The usernames and passwords are blank! HELP!

My computer messed up today and i had to recover it, but i didnt get to save my bookmarks. I've had a mozilla account since 5/2/2024 (i think, thats at least what it says was the date i made my password) and i've saved a lot of bookmarks i cannot lose.

i forgot what email i had made it with tho, so i created a couple of new mozilla accounts and idk if that has messed up the profiles i'm using? i read the mozilla guide on bookmarks and i have like 3 profiles under "profile:default-release" (my settings are in danish, idk if that's what its called in english). but i cant tell which one it is? furthermore, when i click on "manage bookmarks" i get to this place that says something about bookmarks saved on html or something - which i know i havent done.

oh also, before any of that, the first thing i did was synchronize my google chrome bookmarks with firefox and idk if that has messed something up?

I tried to login to firefox sync on a different system due to repair. My entire data is gone and all passwords are also gone. What to do.

I even tried login with username and password apart from google sync. It still didn't worked.

Since a recent UPDATE, there are NO emails showing in the SENT BOX, or any of the FOLDERS including an important one labeled TAX RECEIPTS!!! The only boxes which show emails are the INBOX and the DRAFT BOX. After depending on Thunderbird for 20 years, I now have to use WEBMAIL. OH DEAR, Can you please help me. I am a nearly 80 year old grandmother who wants to email her grandchildren in GERMANY. PLEASE HELP!!

Dear sirs,

I believe that Thunderbird is one of the best email client programs available. This believe is the reason that i am trying to migrate to your email software. Sadly i have been experiencing a some dificulties on my main machine. I’ve tried for several times configurating the email on thunderbird, with sucess. The problem resides on every time that i close the program or restart my computer my email account vanishes from thunderbird. I am using an exchange2019 mail box. Could you please help me out with this situation.

Besr regards, Joaquim Nunes

Account setup: Unable to log in at server. Probably wrong configuration, username or password. TB gmail was working fine, then all of a sudden a TB pop-up window was asking me to sign into thunderbird with my gmail account and then shows a 400 error. Totally confused at what is happening. I have been getting gmail via TB for years.

Every time I would try to log in it would always redirect me to a website that contain only the words "Expected redirect cookie to exist"

It's really annoying because it only happens on Firefox. For some context I just re-installed Windows 11 and I heard from another post that re-installing Windows 11 will help but I do not want to go through the whole process again.

I have already tried:

• Turning off DNS over HTTPS
• Turning Off Proxy
• Clearing Cache and Cookies
• Reinstalling Firefox

Triggered usually by any Website with a (google) map.

   Chrome on Android 13 on the Oukitel RT5 displays these Websites properly.

'Split Screen' functionality & gestures useless. The appear they might work until finger contact with the touchscreen is discontinued, then every attempt rebounds to half the screen still black.

  The only 'way out' of 'split' screen is to exit FF.

There appears no way to 'disable' Android's split-screen functionality

Every time I'm trying to stream video like live sports the video lags so much. I've tried to reinstall the app and run it with no addon ( even though I only use 2 addons) and problem still persists... I'm using a Samsung S21 Ultra.