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For the past several years I have been dealing with Thunderbird occasionally freezing on me, with the window losing focus and the titlebar saying (Not Responding).

It appears to happen when TB is downloading email. If the emails are large (as some are) TB stops everything to deal with it. I have looked for where to change any settings to allow for process threading, since that was the promise of Windows waaaaay back in 1990. Not so, apparently with TB. Even if I'm in a separate window composing an email, it freezes. I wrote about this back in 2018...

https://support.mozilla.org/en-US/questions/1233121

I noticed that this only happens when downloading emails from one particular account, which I use for receiving project code error debug reports. The emails are typically around 150k or slightly less. Not so huge that it should take so long to pull down, but the debug info is in many, many nested tables and divs. Is it trying to render them, even though I don't have them open?

In any case, I set that account to no longer collect. Yet, every once in a while, it still collects. Do I need to remove the account from TB altogether? I would like to be able to have this account checked every 15 minutes like my other five email accounts, which don't cause me any heartache, but it's driving me mad, especially when a throng of those emails come in, like 50 at a time, and I am effectively prevented from doing anything in TB for up to five minutes. I suppose I could craft the emails to be smaller (it's my own code that is sending the debug reports) but the info in there is there on purpose.

Is there a setting I can change somewhere to break off the processing for the main window and the compose windows?

I've just started getting error messages that I need to enter my password to send emails. I've tried that but it still keeps saying unable to connect to the server. This has been happening for about two days now. I've tried updating Thunderbird, restarting Thunderbird and restarting my PC. None of this has worked. I made no changes to my system, software or home network. Any help would be appreciated. Thanks, Dave

I started having new tab crashes a couple of weeks ago on Firefox and Brave browsers. I have looked in the extensions settings and do not have any added extensions so that did not cause the problem. I also run Norton antivirus and Norton Ultimate utilities software and regularly clean out files and scan my computer for malware. Not sure if Ultimate Utilities is the problem since I have had other problems in the past with that program. Also, I wonder if Windows updates caused this problem? This has also caused problems in the past. To get around this problem I have to copy the link then right click on my mouse and open a new window the paste the link. Very annoying and time consuming. How do I fix the continual tabs crashing problem?

I ran into an error on my Windows 11 PC. If I add an attachment via the system menu called up by the right mouse button, the size of the attachment is displayed in terabits and cannot be sent :-)

Hello, The Optimum SMTP is recently rejecting emails I am sending from one of three Optimum email accounts that I have. When using the one account I get the following rejection notice:

Sending of the message failed. An error occurred while sending mail. The mail server responded: Spam detected by content scanner. Message rejected (ID 6661A65F0037E564). Please check the message and try again.

This only occurs when I use Thunderbird to send messages. If I use Outlook on the same computer, I do not get the error. Previously, I was getting the error on all three accounts, but when I upgraded to 64-bit Thunderbird, the problem went away. Of course, I called Optimum and they said that the problem was on my side and were not helpful. They also don't take any responsibility if you don't use their web interface.

I would appreciate any ideas that anyone has on what I could try to eliminate this problem. Thank you.

Every-time I open up Thunderbird e-mail Version 115.11.1 (64-bit) to access my Outlook E-mail Account, it pops open a box wanting me to enter my password! :-( I can enter it and mark that box to use "Password Manager", but it doesn't matter if I check that box or not, because every-time I reopen Thunderbird it asks me for that password again! :-( This problem just started in the last few weeks...... Once I enter my password, I can receive and send e-mails just fine, but when I close Thunderbird and reopen it, that popup box reappears again, where I must enter my password. (see picture I attached) If I just X out of it, I can't access my e-mail at all, as that box asking for a password, pops back open again asking me for my password AGAIN! Which by the way is 100% correct, as I can access my e-mail through Firefox, Google Chrome or Edge Browser just fine. I have used Thunderbird for years and have NEVER encountered this problem before, I hope you have a fix! I am running Windows 10 Pro Version 22H2. Thanks in advance! Keith

We have had thunder foe a few weeks now and have been very happy with it. Today it suddenly stopped sending and receiving emails. I have checked the help page but am struggling to figure out how to fix. Can you please help. Cheers Colin

I use Thunderbird to check the 15 different email accounts that I have to respond to. On the 4th of June it just quit sending or receiving emails. I tried deleting some of my emails but it hasn't helped. Do you think I haven't deleted enough or would there be another reason for it to quit working.

I just started using TB about 2 weeks ago. I have not even gotten to the point of installing a eml to mbox software to move my folders, etc into TB from emClient. I am changing because emC quit authenticating 'out of the blue'. I have been getting and sending emails perfectly well in TB until about 4 days ago. I get a message that says it cannot connect to Comcast server. Nothing about authentication or a password. It just stopped! I talked to Comcast tech support today and they said everything on their end looked good. I have spent several hours tonight going thru TB checking everything, reading this forums notes on unable to connect, restarted a couple of times, etc. Needless to say, I am not happy and really don't know if I should ditch TB and go to a 3rd different email program. (Note: I am not one who changes often or without a fight to keep a program.) I have been with emClient for over 10 yrs. All their suggestions have not worked. I like TB and really want it to work. Suggestions please.

Today, Thunderbird has switched servers on my two email accounts. My two accounts are a Cox email which has been moved over to Yahoo and a business account which uses Gmail. I have messages on the Yahoo server but when I ask Thunderbird to "Get Messages", I can see from the info at the bottom of the screen that it's checking Gmail not Yahoo.

Okay, all of a sudden it's now back on track. I don't understand how this glitch came about. Hopefully, it won't happen again.

Bill Dinger

Hello,

I have been facing this issue when accessing Google Drive using Firefox, after selecting a file and clicking on "File information" option the "Details" and Activity" tabs simply don't load, as you can see in these screenshots.

Also, I found this thread also here on Mozilla Support from two years ago that reports the same issue. Apparently the bug was solved but ended up returning in most current versions.

I opened the current thread just to report this bug again. Thanks.

EDIT.: Another user reporting the same, his thread was archived: https://support.mozilla.org/en-US/questions/1422875

Dear Support Team,

After updating to last Mozilla Firefox version (126.0.1) all my ngx-datatable tables are overlapping all rows over the first one even if the entire height of the table is correct calculated.

This is a blocking point. I need assistance urgently.

Dear Sirs,

Please help why didn’t support China Office 365? We are using China exchange online, but it can’t use Thunderbird login our account. We have ask them, they need the software register to their system, could you register thunderbird to their system? Thanks!

Kin

How do I get Thunderbird working again? (Out since 30.05.24) I am a senior and need easy directions to follow as not tec. savvy. I was an iinet customer - now themessaging.co

In early May I started having problems with Google on Firefox. Sometimes the Google home page won't load up at all. Once it does load up sometimes the searches work, sometimes the search just times out and goes back to the empty search bar, also when I click on links to websites they time out too. If I go straight to a bookmarked website, that seems to free things up and the next Google search I do will work. I've uninstalled and reinstalled Firefox but it doesn't make any difference. Google works fine on Chrome and Edge. Any advice would be gratefully received - please note I'm not technically minded! Thank you.