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well installed Thunderbird on UBUNTU 24.04 LTS doesn't start beyond choice of new profile and selection of old data file from a former UBUNTU installation (UBUNTU 25.10 ) I retrofitted to current UBUNTU 24.04 LTS , thus more stable

I already left a topic here on this issue, then no one could help me, in general, the problem appeared a month ago in me, as after I reinstalled Windows, downloaded the facit anti-cheat steam browser and went to play facit, since facit requires some settings in the bios for it to work, when downloading the anti-cheat, it asks to restart the computer, it asks for tpm 2.0 secure boot , VBS , iommu , and so I thought for a long time what could be the problem that it is after installing the anti-cheat facit that the browser breaks. As a result, I found out that it is when the iommu function is enabled in the firefox bios that it breaks , if you disable this setting, the browser works, although it gave an error before and did not start at all, I spent a month trying to figure out what the problem was, I am a Windows optimizer and I had custom windows and a lot of different settings for optimizing windows, but now I have installed official windows and the problem is still there, it turned out that it is far from in windows and windows optimization, because I have many friends who use custom windows and optimization settings and everything works for them, and so I found out that it's about iommu , just a couple of days ago, I updated the bios, I had the old version, now the newest one is still present, if there is, then help me figure it out.

here is the error code from the "details" by the way, not only firefox breaks, but also chrome, brave, etc.

AvailablePageFile: 37469605888 AvailablePhysicalMemory: 32424693760 AvailableVirtualMemory: 138531310682112 BackgroundTaskMode: 0 BuildID: 20260403140140 CPUMicrocodeVersion: 0xa20120a CrashTime: 1775599624 DOMFissionEnabled: 0 DOMIPCEnabled: 0 HeadlessMode: 0 InstallTime: 1775587593 LastStartupWasCrash: 0 MinidumpSha256Hash: 89a8c6296c245dae30e1562163d1ec0d37df24dffa0a6e612f9294854213f8ff ModuleSignatureInfo: {"Mozilla Corporation":["firefox.exe","xul.dll","gkcodecs.dll","nss3.dll","mozglue.dll","lgpllibs.dll"],"Microsoft Windows":["dbgcore.dll","winrnr.dll","twinapi.dll","wshbth.dll","pnrpnsp.dll","NapiNSP.dll","netprofm.dll","npmproxy.dll","dhcpcsvc6.DLL","dhcpcsvc.dll","winnsi.dll","DWrite.dll","dbghelp.dll","winmm.dll","Windows.UI.Immersive.dll","twinapi.appcore.dll","InputHost.dll","WindowManagementAPI.dll","textinputframework.dll","Windows.UI.dll","ktmw32.dll","wsock32.dll","version.dll","propsys.dll","WinTypes.dll","CoreUIComponents.dll","CoreMessaging.dll","nlaapi.dll","uxtheme.dll","dwmapi.dll","kernel.appcore.dll","windows.storage.dll","ntmarta.dll","IPHLPAPI.DLL","dnsapi.dll","mswsock.dll","CRYPTBASE.dll","wldp.dll","ntasn1.dll","ncrypt.dll","msasn1.dll","profapi.dll","bcryptPrimitives.dll","msvcp_win.dll","ucrtbase.dll","cfgmgr32.dll","wintrust.dll","gdi32full.dll","crypt32.dll","KERNELBASE.dll","win32u.dll","bcrypt.dll","sechost.dll","SHCore.dll","user32.dll","advapi32.dll","kernel32.dll","nsi.dll","gdi32.dll","ws2_32.dll","rpcrt4.dll","shlwapi.dll","ole32.dll","shell32.dll","oleaut32.dll","msctf.dll","combase.dll","msvcrt.dll","psapi.dll","clbcatq.dll","imm32.dll","ntdll.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll"]} ProcessType: main ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 12318 StartupCacheValid: 1 StartupCrash: 1 StartupTime: 1775599624 SubmittedFrom: Client SystemMemoryUsePercentage: 5 Throttleable: 1 TotalPageFile: 39652315136 TotalPhysicalMemory: 34283606016 TotalVirtualMemory: 140737488224256 UptimeTS: .2474393 Vendor: Mozilla Version: 149.0.2

I've been running TB for 10-12 years, generally with no problems. When I logged in on 5/13/26, I saw that Windows had run an overnight update:

    2026-05 Security Update (KB5089549) (26200.8457)

Thunderbird (version 147.0.2.0) was not running, although it had been when I slept the PC the previous night.

Now, when I try to start TB it gives me the crash report dialog. Selecting the Restart option just brings me back to the crash report.

In searching for possible causes, I see that this may be caused by a bad profile. So I open the profile folder with (run) %APPDATA%\Thunderbird\Profiles\ which in my case is:

  C:\Users\<user_name>\AppData\Roaming\Thunderbird\Profiles

This is an empty directory. But if I go up one level to \Thunderbird there is a profile.ini file which contains (actual user ID replaced by <user_ID>:

[Install8216C80C92C4E828] Default=E:\Thunderbird\Profiles

[Profile0] Name=<user_ID> IsRelative=0 Path=E:\Thunderbird\Profiles Default=1

[General] StartWithLastProfile=1 Version=2

"E:\Thunderbird\" is the correct location of my TB installation. In that directory is a profile.ini file that contains:

[General] StartWithLastProfile=1

[Profile0] Name=default IsRelative=1 Path=Profiles/<user_ID>.default

Directory "E:\Thunderbird\Profiles\<user_ID>.default" is present. But all of it's files are dated 2010 except Mail, dated 2016.

Directory "E:\Thunderbird\Profiles" contains the ImapMail and Mail sub directories totaling about 25GB data.

I don't know what the Thunderbird startup process is or if this all looks correct. Can someone give me a sanity check? If this looks normal, what else could be corrupted?

Thanks in advance.

All the tabs, in both my profiles are constantly crashing. I cannot keep at a task for more than a few minutes without needing to restart the tab. Is this a setting problem? I've cleared the cache, and reset Firefox, to no avail. Thank you for any relevant advice and/or assistance.

Firefox keeps crashing after only 2cminutes of use on Amdroid-here's the message:

dee1ca83-8574-4638-bd3b-7846089c2505 java.lang.OutOfMemoryError: Failed to allocate a 134217744 byte allocation with 50331648 free bytes and 113MB until OOM, target footprint 132313152, growth limit 201326592

java.lang.OutOfMemoryError: Failed to allocate a 134217744 byte allocation with 50331648 free bytes and 113MB until OOM, target footprint 132313152, growth limit 201326592 at java.util.Arrays.copyOf(Arrays.java:3785) 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$3(FetchBackend.kt:6) at mozilla.appservices.httpconfig.FetchBackend.sendRequest(FetchBackend.kt:273) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$$inlined$uniffiAsyncCallback$1.invokeSuspend(viaduct.kt:101) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:9) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:122) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:127) Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@ef92ca1, Dispatchers.Default]

This has happened randomly on several different computers, both windows and ubuntu linux. It just now happened on my Win 11 computer. Was viewing the CNN news site and FF suddenly closed, without a "FF crashed..." message.When I clicked the icon to reopen it, it came up with the home page group of tabs instead of reopening the windows and tabs that were opened when it crashed. Worse, none of the previous months of history shows up and recently closed tabs and windows are both greyed out.

Is there a way of recovering the history of what I was working on at the time of the crash and what the hell is causing this? I am close to dumping FF and going with something else as this is highly annoying.

Hello everyone,

yesterday I got quite a scare. While Firefox was open, a new tab briefly appeared showing the page about:processes, and immediately afterwards the browser closed itself on its own.

At the same time, Chrome was open in the background. When I clicked on Chrome, a prompt appeared asking whether I wanted to allow changes to be made to the system (the typical UAC prompt). However, I’m not entirely sure if this was actually triggered by Chrome or possibly by another application.

I clicked “No” on the UAC prompt and immediately unplugged my keyboard. I recently started using an ASUS ROG Falcata, which is connected via USB.

After that, I ran a virus scan with Windows Defender — it didn’t find anything. I also ran AdwCleaner, which also came up clean.

At first, I suspected the ASUS ROG Falcata (I’ve only been using it for a few days), since it’s almost like a small computer itself and can execute macros, patterns, etc. I was worried about a possible firmware bug or something worse. At the moment, I’m honestly hesitant to plug it back in and am using an old Dell keyboard instead.

Importantly, I wasn’t pressing any keys at the time of the incident.

Now I’m quite unsure what could have caused this.

Is there any way to trace this in Firefox (e.g., via logs)?

And is there any (event) log where I could check what triggered the UAC prompt?

One more thing I noticed: I shut down the PC afterward and turned it back on later that evening. Everything booted normally and is still running fine today. However, Firefox updated itself yesterday from version 148.2 to 149. Maybe that was somehow related (though there’s no indication in the Firefox update history that anything failed or similar).

Bruce Caress

May 7, 2026, 15:17 CST

Hello, I've been watching MSNOW at 4pm eastern and after about half an hour it crashes. I get a message to send a report and restore the tab. I restore the tab which works for maybe ten minutes and crashes again. I am using Windows 11 on a new computer. I'd appreciate some assistance. Thanks. Bruce Caress

Moderator note: This question has been edited to precise Firefox and OS version, based on the crash reports.

For two days I'm having intermittent "hanging" when I'm typing a document or letter in Thunderbird. It has just dont that for the 2nd time in less than 10 minutes. Don't know what's happening but it's very frustrating. Am not having any other computer problems. Am running Windows 11 which is automatically updated by Windows. I think Thunderbird is the most current version too. Help please anyone! It does say "(Not Responding) at the very top of the page.

Après avoir téléchargé la toute dernière version, 18.5.00, firefox ne fonctionne plus. Le message apparait à chaque recherche d'un site : l'onglet a planté. Que faire ? Merci

Greetings, I've been using Thundrbird for many years, and now suddenly it won't open, because of a "Bad Image" error. Is Mozilla Thunderbird still usable on Windows 10? This started happening either yesterday (maybe yesternight) or the day before yesterday.

"--------------------------- thunderbird.exe - Bad Image

C:\Program Files\Mozilla Thunderbird\lgpllibs.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f.

OK

Thunderbird

Couldn't load XPCOM.

OK

"

Should I try to reinstall the newest version 150.0.2? I have downloaded it, although I just checked the file version, and it's already updated.

Thank you, Shalom

Hello, I’ve been increasingly frustrated over the past few weeks with your browser, which I prefer over all the others, because it keeps crashing constantly. I’ve tried several small fixes suggested by IT professionals, such as clearing the cache, running an antivirus scan, and deleting my browsing history, but the issue persists with no improvement. At this point, my last option seems to be uninstalling and reinstalling the application, but I’m concerned about losing my bookmarks. Could you please advise me on how to resolve this issue? M. BEDIRIAN

No matter what I try to read or go to, Firefox crashes repeatedly. I literally cannot use it at all. I keep getting: Gah. Your tab just crashed. We can help! Choose Restore This Tab or Restore All Crashed Tabs to reload the page/pages.

Clicking those options fixes nothing! How do I go back to the previous version, please?

FF for Linux Mint mint-001 1.0 FF closes in just a couple of minutes, even with one open tab and nothing clicked or typed. FF crashes even in "Troublshooting Mode". "about.crashes" lists no crash reports Using Task Monitor to view system vitals, I discovered that while CPU usage by FF is very low, memory usage rises linearly over a couple of minutes. System memory available is 31.0 Gb. When FF usage reaches 30.7 Gb, FF crashes. No other browser or program has issues.

Other than being slow to download my emails now for a few months, TB was performing well until a week or so ago. Now it also won't open the downloaded email when I click on it and the TB freezes up so I can't close it out. I have tried restarting computer multiple times and it works for one or two emails that I can open and then starts freezing up again. Makes using it almost impossible. I have security Windows 11 Defender only and have had it the entire time when it also worked well.