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I recently archived a large number of messages from one of my IMAP accounts. After that, new messages show up as unread headers, but when I click on them, nothing shows up in the preview pane and the status just seems to get stuck on "Loading message". I have done the "Repair Mailbox" thing a couple of times. After a restart, Thunderbird reloads the headers from the server, but I get the same result.

Thunderbird 138/139, Windows 11 Pro 23H2. While composing a message, after a few lines the app freezes. Both the compose window and the main TB window freeze. Only opening the Windows Task manager allows me to close them. This did not happen with earlier versions.

If I save the message every few seconds while composing I can get most of the message back and continue after restarting TB. This behavior is the same in both the normal and troubleshooting TB modes. I can't even find a crash log to send to Mozilla.

Where shall I look next?

Thank you!

So my microsoft office365 email account that I access with Thunderbird is almost full (think 100,000 messages), and I would like to move those messages off of the server and into local folders as backup. I've done this in the past and, while it would be cumbersome and slow, it would eventually work.

Now though, I can't seem to move more than 5-10 messages at a time to a local folder. That isn't helpful with so many emails to process! When I try larger batches, the program just balks, no error message, no emails moving, just nothing. In the past the emails would move, but then it would take ages for the mail server to catch up. Now it just isn't trying.

Any help would be appreciated!

After every update, Firefox starts to a blank screen and will not start loading the webpage url put in for over twenty minutes to a half hour. During this time other browsers on my Win 10 PC load immediately so it is not a network issue. It is Firefox. When I see that an update is pending I hesitate to do the update because I know I will lose the use of Firefox until it is ready to respond. It just hangs with "loading X.com" showing at the bottom left of the blank screen. I have been using Firefox for a long time and in the past year or longer it has become very unreliable. There are also instances where without an update it will do this and the only way I can get it to work is to clear the cache and the history through settings. What is going on with Firefox! (And lately there is an update every couple fo days!

I noticed today that credit card fields are completely disabled in Firefox. I'm not talking about autofill, which i don't normally use anyway - I can't even select these fields to input data. This is affecting multiple sites that are not related. Any ideas?

I have the latest Firefox update and I cleared my cache and history....now I cant log on, change or do anything to my Yahoo mail account...it says its a ATT issue but on my Iphone my email works fine....any help is appreciated.

Im using a dell laptop Inspiron 14...

Using Ubuntu 24.04.2

I have a large desktop made of 3 screens of different size, resolutions ans scaling factor.

When I open a message it get displayed with a stupid timestamp size on the most left screen

I tried with X-Randr and Wayland but still

I have recently noticed that an application is slowly filling up my disk. Until today I was not sure of which application it was. I closed all my applications, some increasing disk usage others decrease but on closing firefox, a good chunk of space was reclaimed, about 50MB. That might not seem like a a lot but my drive is constantly full, teetering around the 100-200MB free range. So if any app were to leak space it could eventually cause my system to lock up until space is cleared.

Is there any way in firefox to monitor/debug disk writes to figure out which site is leaking disk space. It could also be a firefox bug but I think it is a site.

Everyday I answer the quizzes on PCH but for the last 3 days the images for the quizzes don't download. What am I doing wrong. I haven't changed the settings and PCH is still an exception.

I am trying to copy a large number of emails (about 1,000) from one subfolder to another. However, TB seems to be not up to the task. I can move one email at a time but that, of course, is not practical for my purposes. However, even if I break it down into 30 or 40 emails at a time, it copies some of them and not others. Anyone know what the problem is? I will admit that some of the emails are quite large (5-10 MB). Could this be the issue?

Working with TB 128.11.0esr (64-bit) on a Macbook running Sequoia 15.4.1.

Thanks in advance for any assistance you can offer.

Firefox keeps crashing and Hanging and I get the error message "gah your tab etc" I have followed the advice for fixing the problem but it keeps coming back Its really annoying when you are trying to do something I'm no computer whiz and I have looked at the crash reports, its just gobble gook to me, I need help to fix the problem.

I had an issue with the hidden task bar not showing up when I moved my cuser to the bottom of the screen, so I was "playing around" and messed it up. I created another profile, but lost all my bookmarks and so forth. I copied files from my old profile to the new profile, but now I can't get to michaels.com - it won't load. Also, I have my yahoo mail tab looks like it's loading, but I got in my email and when I went to blackforrest.com it does the same thing.

I still have the issue of my task bar not "unhidding" when I go to the bottom of the screen. I have to minimize my screens to see the task bar.

Can you help, please?

Hello, My Mozilla browser has been displaying new websites in black and white for two years or more (NYT, SMH, NZ Herald, Gdn - see screenshot attached). Substack, random theatre co, Airlines, conferences etc etc everything else appears in colour!

I am not great on tech so I have looked at Settings and asked google and got nowhere. Thanks people for any advice - It will be appreciated.

(PS seriously Mozilla help please do not offer those asking for help a manual troubleshooter link without stating it will wipe their help request when they use it. This is just mean of you).

I host services on my local network like: miniflux.thepromised.lan and usually accessed them by going to the short hostname directly like: http://miniflux and it just worked great until a few Firefox releases ago. I don't know when it stopped working but I can't get firefox to use my local DNS servers on my own wifi to resolve these local addresses.

My current workaround is to connect to my local vpn and force all traffic that way. No other app on my android device has this issue. Chrome works exactly as expected. I can also open a live dashboard to my pihole instance and watch in real time for dns queries that come over the wire. I can't get firefox to use these local servers at all.

What am I doing wrong?

Thanks!

Once I visit any web site that uses HTTPS there is approximately a 90% chance it'll take seconds or even minutes to secure the connection. This never happens on other browsers as they load such pages instantaneously.

I already cleaned my data up and removed the extensions, both suspected and innocent bystanders, to no avail.

As stated in the title, I'm using Firefox 139.0.1 x64 on Windows 11 (24H2, build 26100.4061). This started happening after an automatic Firefox update, I never changed anything in my system configuration.