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I am running Windows 11 Pro 25H2. After updating Thunderbird recently to the latest version, it is crashing immediately upon starting Thunderbird, not even bringing up the initial screen.

The message is

"Thunderbird has stopped working. A problem caused the program to stop working correctly. Please close the program."

In addition, it brings up the Mozilla Crash Reporter, which states

"We are sorry

Thunderbird had a problem and crashed. We will try to restore your tabs and windows when it restarts."

I do not want to lose all my old POP3 messages, etc.

Please help, Nina

Hello there.

Since last update i'm unable to browse websites like youtube, social media and all other websites with video content. Video often fails to load,the wholewebsite is not loading, freezes while played or while exiting full screen mode. All of these freezes the browser - the site cannot be refreshed, links does not work. The only way is to close the tab with the freezed page or kill the Firefox process in windows Task Manager. Refreshing, re-installing, deleting or using different profile don't work. Same with add-ons. Seems like the issue lies within the browser and it started to appear since last update.

I don't know what to do when February 29 is in my calendar, 2026 is not a leap year. I've found nothing to help me. I have the latest version if Thunderbird. Thanks

I always get: "newmsg Trojan:WIN/SuspiciousAttachmentScript.a" and "C:\Users\newb\AppData\Local\Temp Trojan:WIN/SuspiciousAttachmentScript.a" from Mcafee when I open Thunderbird. I'm only getting this in Thunderbird and suspect it's a false positive of some kind. It's still worrying and I'd like to eliminate this. This has been going on for a couple of months. I've run several cleaners and anti-virus programs on the system, but it still returns.

thanks

Never before problem with my Windows 11 Desktop frequently shows an incorrect location. Firefox shows my location as Parkdale, Victoria. Australia and not my correct Florida location. This is a recent Firefox issue. Location is correct in Edge and Chrome. Location is correct on my Iphone and Ipad. A new install of Firefox on a second Windows 11 PC also shows the incorrect Australia location. Changing proxy settings makes no difference. A clean install of Firefox made no difference. Changing browser made no difference. This is a recent problem and unique to Firefox. Thanks

I cannot log in to Amazon.ca using Firefox. When I input my email address to Amazon, it says I look like a new customer so let's set up an account. I am not a new customer and my account on Amazon works fine if I sign in through the Chrome browser. I have tried refreshing Firefox and also tried using Troubleshoot Mode, but the problem with Firefox persists. Is there a fix? Firefox must be blocking some type of data that Amazon requires but even white-listing the website doesn't seem to work.

Have a new computer and when they transfered my information they didn't do my email. I finally got found it an downloaded it but now it won't accept my password. Plese help I'm getting desperate. Thank you Mary Ward

I have saved my selected emails in different folders under Local Folder based on the subject of the email. Now I do not see one such folder where I had saved several emails for that particular subject/topic. Need step-by-step to restore that FOLDER from C:\users\myname\AppData\ ???

My issue described may not be Accessibility I chose in Topic above as that was the closest to match. Basically I am missing that Folder as I might have accidentally deleted from the current file that displays when I click open Thunderbird Mail.

I lost all my data after installation of new firefox. I have lots of important data in that profile.

I forgot the password to sign in and when I reset, a new profile was created for me and all my data are gone.

Now, I even know the original password. I did not know, I will lose my data. How can I get my data back? Please help.

Over the last week or so my personal websites (such as Banking, Amazon, Facebook, etc.) suddenly started asking for (text or email) verification to sign in successfully. This only happens after a restart. (Sometimes I run a 'restart to untangle some glitch - but some Windows updates do a restart automatically.) And I have to go through all the verification stuff again! VERY ANNOYING!! Some MS tech this morning had me uncheck Cookies and other data in the Privacy and security category. But that didn't help. I just did a restart and AGAIN my bank(s) websites asked for a texted CODE. So did Facebook, and Amazon. Once I complete the CODE requirement it stays good until the next restart. And when I went to change that "cookies" option was nowhere to be found (to change it back) In SETTINGS>PRIVACY & SECURITY - NOW shows just the green button and box that says "STANDARD". I don't want or need this annoying added verification on every site that I use daily. I don't know exactly how or when this started...(maybe about a week ago).