All Products Community Forum

Be nice. Our volunteers are Mozilla users just like you, who take the time out of their day to help.

Be descriptive. Saying “playing video on YouTube is always choppy” will help us understand the issue better than saying “something is wrong” or “the app is bro ken”.

Follow through. Sometimes, our volunteers would ask you for more information or to test out certain scenarios. The sooner you can do this, the sooner they would know how to fix it.

I think that this recent update removed all of my tabs and tab windows, it has done this before and I don't understand why, I have the old update session file still (The 11/11/2025 One) and I tried to use that one to bring the tabs back by putting the file in the sessionstore-backup folder with no other file in it, but they didn't come back. I am genuinely confused as to why it doesn't work, I have renamed and deleted sessionstore.jsonzl4 files but it still comes up as a new session.

I am having an issue with retrieving my email in Thunderbird. On laptop, using Version 140.2.0esr | Released August 19, 2025. No changes were made to Thunderbird settings. The email is showing up in the Comcast portal, but for now having it forwared to a Gmail account. Tried changing password in Comcast (and in Thuderbird) to no effect. Tried deleting my Comcast email account in Thunderbird and re-adding it, but no change. Can send out email fine, just receiving it is the issue.

Interestingly, I use BlueMail on my phone and it, too, has the same issue and will not retrieve from Comcast. Thanks in advance!

The site chatgpt.com demands challenges.cloudflare.com to be allowed. I visited this site and allowed cookies. Then it worked. However, the chatgpt.com site froze and when I reloaded it, I had to start all over again. This time, the request for challenges.cloudflare.com remains, even though a URL attachment is reloaded every few seconds. The same thing happens on the openai.com site and several other. I'm using windows 7.1 and ESET Smart Security Premium.

I hope I sent this to the right place.

PC is using Windows 11, latest updates. I have signed in to Mozilla Monitor many times in the last hour, but "Upgrade to Premium" does not appear in the upper-right corner as several help websites say it should. I cleared all cookies and turned Enhanced Tracking Protection off for the site, no help. I restarted Firefox - it's now at release 145.0.1 (64-bit), no help. Any other ideas? Thanx.

I have an email account with BlueHost, which also hosts my web domain. A couple weeks ago I stopped receiving emails and contacted BlueHost tech support. The agent had no clue why I wasn't receiving email. She said "Can you please click on acocunt actions and remove the account and re-addd it. [sic]" I did that, and I was again able to receive emails. But then all my old emails -- sent and received -- had disappeared. BlueHost was able to restore my Inbox emails back to May 19, but was not able to recover any Sent emails. I have a backup of my Thunderbird directory from April, but would like to recover all of my old emails, which apparently still exist because my current Thunderbird Profiles directory contains files corresponding to deleted email folders. For example, my Inbox had a subfolder -- call it ABC -- that was deleted and is no longer visible in my Inbox, but I can find files ABC (no extension) and ABC.msf in my Inbox.sbd folder. My Sent.sbd folder also contains files ABC and ABC.msf. These folders are in C:\Users\aaa\AppData\Roaming\Thunderbird\Profiles\aaa.default\Mail\mail.aaa.com (with "aaa" representing my personal identifiers). mail.aaa.com contains files Inbox, Inbox.msf, Sent, and Sent.msf, which seem to contain my old emails. (Inbox is 132,151 KB and Sent is 289,829 KB, and the file dates are from a couple weeks ago, when I removed and re-added the email account.)

Is there a way that I can recover the old emails?

Hi, after latest update just now, the browsers uses up to 45gb of ram within a few minutes! Not sure what it is, I am on MACOS Sequia Version 15.6.1 (24G90) macbook pro M1

The latest crash:

b1ad0fde-1882-41ce-9b80-4fd3e2c5ac20 java.lang.OutOfMemoryError: Failed to allocate a 134217744 byte allocation with 50331584 free bytes and 120MB until OOM, target footprint 125474336, growth limit 201326592

* New Sentry Instance: https://sentry.io/organizations/mozilla/issues/?project=6375561&query=e9bad27f848049fca9e39dc6b2d0abd5
* Socorro: https://crash-stats.mozilla.org/report/index/bp-22da7755-1702-4479-8d06-ab0d60251118

java.lang.OutOfMemoryError: Failed to allocate a 134217744 byte allocation with 50331584 free bytes and 120MB until OOM, target footprint 125474336, growth limit 201326592 at java.util.Arrays.copyOf(Arrays.java:3578) at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:120) at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:95) at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:156) at kotlin.io.ByteStreamsKt.copyTo(IOStreams.kt:19) at kotlin.io.ByteStreamsKt.readBytes(IOStreams.kt:21) at mozilla.appservices.httpconfig.FetchBackend.sendRequest$lambda$3(FetchBackend.kt:6) at mozilla.appservices.httpconfig.FetchBackend.sendRequest(FetchBackend.kt:274) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$makeCall$1.invokeSuspend(viaduct.kt:49) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$makeCall$1.invoke(viaduct.kt:2) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$makeCall$1.invoke(viaduct.kt:1) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$$inlined$uniffiTraitInterfaceCallAsyncWithError$1.invokeSuspend(viaduct.kt:39) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:9) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:122) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:127) Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@2104835, Dispatchers.Default]

HELP!!!!

As you can see in the attached screenshot, Firefox lists "https://mzl.la/iOSSupport" as the site to provide feedback. This URL doesn't work.

I love Firefox and generally really appreciate the way y'all operate as a company and developer.

However, I really don't like this new function to add tabs to a group. Since it rolled out, I'm always adding tabs into groups when I don't mean to. Really, it's creating a group almost every time I move a tab around. If I delete the group, it's just more clicks and distractions to deal with.

In the past, when you've rolled out new features like this, you've also made it very easy to turn off any new feature we don't like. But I can't figure out how to turn this off. Is it possible?

Thanks for your help.

Spectrum forced a password change and now I can receive but not send emails from TB. I have spoken with Spectrum support, been through everything suggested on both the Spectrum and TB forums --multiple times-- including deleting and recreating the account, editing the password, checking for typos, blank spaces, changing the TLS security minimum, running in troubleshooting mode, etc etc. and nothing has worked. I have TB 140.4.0esr on a Chromebook with ChromeOS 141.0.7390.135 and Debian GNU/Linux 12, no separate antivirus program or firewall but do have Malwarebytes. The only recent update was to ChromeOS but that was weeks before the problem developed. I have two other (non-Spectrum) accounts set up on TB and they work fine. I can send emails from Spectrum's website but this is not a permanent solution. These settings match those provided by Spectrum, although they only show SSL, not SSL/TLS.

Hi,

I am using OS MX-25 Linux and after importing my previous FF profile from an earlier version of MX everything in Firefox 145.0 was fine: my bookmarks and extensions all loaded and everything was tickety-boo. However, after I attempted to relaunch FF I got the following message:

Your Firefox profile cannot be loaded. It may be missing or inaccessible.

I have tried numerous times to launch FF but just keep getting this message.

Eventually it launched, but after a while pages refused to load properly and so I closed it down. Since then, I have been unable to get FF to open.

Any help would be greatly appreciated.

Why is this folder SO LARGE !!! C:\Users\xxxx\AppData\Roaming\Thunderbird\Profiles\6v2ccsvd.default-release\ImapMail

On my PC, it is over 3.5GB !

How can I minimize it !