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Running Win10, all the sudden I'm getting Not Responding messages, failures to connect to server, and slow deleting of emails. I tried everything: uninstalling/reinstalling; running on troubleshooting mode; checking compatibility. Nothing works. Any ideas?

Thank you

I'm uninstalled, Firefox and reinstalled it and cleared the cache. And it's still either not linking to certain sites at all or not, opening them correctly or completely. I don't wanna spend any more time than necessary on this. If you can help me, that would be great.And if not, I'll just go back to chrome

Hi,

I've just updated my Thunderbird for Windows to 151 and I got this nasty surprise (this is why I hate updates these days).

The message list in dark mode, in a table view, now has this awful pitch black background instead of the normal dark brown as it used to have. It looks OK in cards mode, but I don't like cards mode.

I certainly hope this is a bug and not by design. Can this be fixed, please? It looks terrible, it's hard to look at, like old Windows 10 dark mode or some high contrast accessibility mode.

Thank you!

It doesn't let me log into my stelianciuciu@yahoo.com account, even if I add a pin, Yahoo mail on stelianciuciu@yahoo.com doesn't open Mozilla Firefox iOS

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

Thunderbird 148+ on Windows 11 repeatedly prompts for the password when synchronizing an Exchange account (professional) configured with the native Exchange support (no add-on installed).

The account only offers “NTLM” or “Normal password” authentication methods. OAuth2 is not available in the account settings.

During synchronization, Thunderbird asks for the password separately for many folders. However, clicking “Retry” usually works immediately without changing the password, and manually re-entering the same password also works.

The issue then reappears for the next folder, causing continuous authentication prompts (I have many folders...).

Actions already tested:

• deleting saved passwords and tokens,
• deleting/renaming key4.db and logins.json,
• restarting Thunderbird,
• recreating the account.

The problem persists.

This looks like an authentication/session handling issue rather than an actual invalid password.

Hi,

I am using macbook pro latest one, and when I use firefox and scroll down from my wireless Mouse to the bottom of the page, the scroll bar jumps to the top while working, is there a fix for this.

Thanks

I can't find any way to make the settings so that the label prints correctly across the entire sheet. I tried all the settings, nothing helped. Everything prints fine in Google Chrome.

So for three days now, my firefox constantly crashes. I would be reading a story online or watching a video on Youtube and then it will suddenly freeze. In videos, it'll still play the sound but the screen will freeze. I can't pause or stop it. Then either Firefox crashes and closes or I have to close it for it to stop. Sometimes, when I try opening it again, it still won't open. I used to have 50 tabs open and never ad this issue. After this, I closed all the open tabs, even deactivated a bunch of extensions, run malware detection, and still the issue continues. I don't know what the problem is. I even followed instructions and deactivated hardware acceleration options in Performance. And I have all AI options turned off too. The app also recently was updated.

crash report bp-e455fd8b-e30b-4cdc-811a-346ac0260607

before v151.0.2, didn't have a problem with firefox, now with this new release, it is really really slow, takes some time to start and load pages. what happened??

Hi, For at least two weeks, Thunderbird has been stalling, not responding, and crashing (but not the type that sends a crash report). Every time it begins downloading messages, it stalls. I compacted folders, checked what your forums recommend, and still nothing. I have Thunderbird on a Win10 XPS laptop and a Win11 Dell desktop, new and full of specs. Uninstalled it and reinstalled it. Same. There has to be a bug in the new version, my guess, since it was working perfectly until the latest update. See images from my Win10 laptop right now. Please advice!!! I am at wits' end since I need Thunderbird to do my emailing!!! Or else I will have to find another email handler.

Maria Elena [edited email from public] @csun.edu

I just bought my boyfriend a new iMac. We are having trouble loading many sites and platforms using the latest Firefox browser. The list is growing but includes Facebook, Meetup, Wikipedia, chess.com, nytimes.com - in all cases, rather than a login screen, we get an error message or a home page loads with no access to other pages or login area. I've cleared the cache, restarted, tried going directly to the site to log in, but nothing works. Everything is fine when using Chrome, but we prefer Firefox. Is this a conflict in the new Apple OS? Is there a fix?

I am using Kubuntu 26.04 and I am using the monthly stable channel version of the Thunderbird Snap. In KDE system settings, the default email client is set to Thunderbird. Upon every startup of Thunderbird, it ask if I want to set it as the default client for email, newsgroups, feeds and calendar and when I click yes and close Thunderbird and reopen it it does the same thing, over and over. Otherwise the email program operates just fine otherwise. My email accounts are all setup properly and functioning and working and it downloads email just fine. It just has that annoying popup upon every startup. I've included two images to show what I mean. I like the Snap version and prefer that container format. I would like someone who is smarter than me to file a bug on my behalf.

One Home/House. Two PCs. a. WINDOWS 1O b. LINUX 22.3 Both share One Mouse One Keyboard One Monitor. I have a FIREFOX account and have joined both PCs to MOZILLA. I have activated, deactivate and successfully used FIREFOX SYNC. I keep getting emails from MOZILLA stating that someone else signed on to my email acct. and a MOZILLA supplied a 6 digit code to confirm. I know it was me, so I confirm using 6 digit code and no problems. My question is. Who, How or can I inform so MOZILLA/FIREFOX recognizes both PCs. Also. Have been thinking about purchase of a YUBIKEY/KEYs for security. I know, for loss prevention, it is best to purchase 2 Keys. But can a single YUBIKEY be shared on both PCs. Or, do I need to purchase separate keys for each PC? So 4 Keys... 2 Keys for the WINDOWS 1O and 2 keys for the LINUX PC?

switching windows in and out Firefox android seem to reload the open page, this sometimes means significant waiting time and in case of scrolling pages the loss of your last position

My firefox took longer than normal to load this morning. It will go to some homepages but then won't go to any sub pages. It appears to not want to go to the home pages of shopping websites. It says it last updated firefox 5 days ago so the long wait this morning wasn't an update. If I use Microsoft Edge I a able to browse freely.

I have been using this wonderful browser since 2012, and it has been my default browser ever since. Recently, I've been facing an issue where I can't upload images, audio files, videos, or any other attachments on WhatsApp Web through this browser. To verify the problem, I tested WhatsApp on a different browser, and everything worked perfectly there.

I would appreciate your advice on how to resolve this issue. Please guide me on what steps I can take to fix the browser and restore normal functionality.