सभी प्रोडक्ट Community Forum

I have two identities in my Thunderbird 44.0. When I click get messages for one of the identities, "loading messages" shows in the status bar and the cursor shows an hourglass. It's stuck in this mode forever until I select a folder in the other identity. If I go back to the first identity and select the Inbox, the hourglass comes back and the perpetual "loading messages" shows again in the lower status bar.

If I can find the installation file, should I try to install it again, or uninstall first. And how can I save the email and profile(s) before I do the uninstall.

Any suggestions...

We are facing issues with Thunderbird mail application.

Incoming emails are not being received in Thunderbird. Thunderbird is running very slowly and frequently becomes unresponsive. Sending and receiving emails is taking a long time. We have already restarted the application and system, but the issue still persists.

Kindly check the mail server settings and Thunderbird configuration from your end and advise on the necessary action to resolve this issue as soon as possible.

Your prompt support will be highly appreciated.

On iGPU hardware, default dedicated VRAM is usually 0.5GB and the maximum is 2GB.

On my laptop Firefox only use 0.48GB(dedicated VRAM)/0.2GB(shared VRAM) when I set VRAM to auto(512MB) in BIOS.

The screenshot is when I set dedicated VRAM to 2GB in BIOS, and you can see the VRAM usage has increased to 1GB(dedicated)/0.5GB(shared).

It seems Firefox is restrict itself to dedicated VRAM and not fully utilize the vast amount of shared GPU memory. This makes sense on dGPU hardware but not on iGPU hardware. On iGPU hardware, the negligible amount of dedicated GPU memory exists only for compatibility to legacy programs, and Firefox should allocate all it's GPU memory from the shared GPU memory pool.

TB has started to exhibit terribly long latency lags

I'll be working on TB, and then it hangs for 5-10-15 seconds, if I click on a new feature, the screen goes gray until the latency resolves. Also get the Windows timeout error notice (see image)

After 10-15 seconds, TB resolves on its own and works OK for a little while, but then goes latent again after maybe 1-2 minutes. This is consistent last couple days. I've rebooted, cleaned caches, etc.. and the rest of the Win 11 PC is working fine, fast, no latency in any other program.

I asked my email providers if they were having IMAP issues, but everything OK on their end.

Ideas? TB v. 140.11.1esr (64-bit)

message comes up saying unable to write email to mail box. make sure file system allows you to write privileges and enough disc space to copy to mailbox. please can anyone help with this as cant seem to contact thunderbird. many thanks

Running Nightly (153.0a1 (Build #2016163271), a4d50ea7cb22bb9324cc8d62c6a03bfe902ea170, GV: 153.0a1-20260526143706, AS: 153.20260525050231, OS: Android 16) and Samsung reports the app is frequently crashing; additionally and randomly, websites won't load... No error message, they just seem to hang.

I'm more than willing to provide logs if someone walks through the collection process with me.

At the start of last week Thunderbird started to be very laggy to the point it is almost unusable.

It was after the update to version 151. Running on MacOS Sequoia

I have tried a number of remedies to try and resolve the issue:

• Compacting mail folders
• Repairing mailboxes
• Clearing the cache
• Rebuilding the search index
• Restarting in trouble shooting mode (this caused Thunderbird to hang)
• I also tried installing the daily build release to see if the issue was resolved

None of the actions above solved the problem. I would very much appreciate any help or experience others have had.

Z.

I have tried for several days to get Firefox to use this GPU; I cannot. Chrome, and Edge use this GPU without issues.

I am using Firefox 151.0 (64-bit) 20260516144017 on Windows 11 Pro 25H2, 26200.8457 Nvidia RTX 2000 Ada Generation Laptop GPU with latest driver: NVIDIA RTX Driver Release R595 U4 (596.36) Tue Apr 28, 2026.

Windows > System > Display > Graphics > Firefox GPU preference: High Performance (NVIDIA RTX 2000 Ada Generation Laptop GPU)

Firefox Settings: General > Performance:

unchecked Use recommended performance settings
 checked    Use hardware acceleration when available

My latest combination of settings are:

gfx.webrender.all = true gfx.webrender.force-disabled = false

webgl.default-low-power = false webgl.disable-wgl = false webgl.disabled = false webgl.enable-prototype-webgl2 = true webgl.force-enabled = true

I have tried several combination of settings to no avail.

I always get: about:support > Graphics > Compositing: WebRender (Software).

Any help is very appreciated -- thank you.

The GPU isn't working properly... I've attached screenshots of the browser I have installed. If needed, I can take any logs, etc. It's very frustrating - I have a fairly old processor and its GPU isn't working properly! If needed, I can create a thread on the forum and attach any information about my system. Sorry if I'm in the wrong place! Best regards, and thank you for the best browser in the world!

I open Firefox and Chrome with the exact same page:

https://en.wikipedia.org/

Chrome is using 296 MB while Firefox is using 590 MB.

What am I doing wrong?

I am running Thunderbird 140.9.1esr on openSUSE Tumbleweed.

For a long time now, Thunderbird often runs at high CPU (80-100% of one core), for several minutes at a time (5-10 minutes). This seems to happen many times every day, with no apparent cause from my end. (I just got back from Lunch, and the fan on my laptop was going crazy because of the high CPU.)

What can we do to identify and fix this issue?

Search in Thunderbird has never worked reliably for me. I've deleted and rebuilt GloDa, and am now monitoring indexing progress in the Activity Manager.

After recently enabling indexing for a couple of additional folders, every time I start Thunderbird it seems to index a few emails (maybe 20 or 30 or so) then hangs, and the indexing progress stops.

My total number of messages in my entire Thunderbird profile, across every folder in all of the few email addresses I have, is a couple of thousand emails. We're not talking anything crazy here.

There are gigabytes of RAM available and hundreds of gigaabytes of free storage space on the local volume.

Any ideas?

Co żeście spieprzyli w tej przeglądarce? Claude AI zawiesza całą przeglądarkę. Od kilku wersji coś jest fundamentalnie zchrzanione bo nawet Pikvm nie serwuje obrazu. Do tego popsuliście coś z profilami, że nie można wrócić do starej wersji przeglądarki. Cała masa błędów. Na siłę próbujecie udaremnić działanie wtyczek blokujących szpiegowanie użytkowników?

Hey there since a week when I brows with Firefox on Windows desktop the RAM uses jumped from around 60% spiked to 92-95% RAM and that changed just come a long a week ago. If change brows like Chrome different story, back down at 65. So you can also see a massive number on Firefox system running.

Question: Whats the reason for the change? What happend?

Best, Janosch

Thunderbird causes my machine to 'hang' from time to time,

1. often for up to a second and usually a number of times in quick succession on each ocasion. Sometimes this happens frequently - say every 5 or 10 minutes - sometimes only after an hour or more since the past occurrance.

2. My machine hangs completely - nothing will work, mouse, keyboard, sound, other apps etc. If I happen to be typing (into any app - including Thunderbird - when this happens, input ceases, the cursor freezes and - if the problem persists for a second or two, Windows reports "[app] is not responding"

3. I cannot be certain, but I believe the problem occurs whilst messages are being retrieved.

This is a very serious problem as it means that I can never leave TB running as the problems it causes are not acceptable.

4. This means I cannot deal with incoming messages without periodically re-starting TB - which is an utter PIA.

I am running Win 11 Professional on a 2-year old machine with 64 Gb of memory. I have run TB in Troubleshoot mode, I have confirmed that the problem occurs regardless or whatever other apps are running (or none) and I have proven conclusively that no other app causes any kind of similar problem.

Looking forward yto hearing if others have had the same issue and what can be done about it.

Unable to open NEW Email on one click. i need to wait for 4-5 mins to open that email. even i am not able to open on one click which contains Barcode. which email contain barcode its also not reflecting in email and even i need to wait for 4-5 mins to open that email.

Kindly help me for this matter i need to change any settings.