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Hi I am new to Thunderbird -previously used gmail. I have installed Thunderbird and it recieves mails as it should, but the mails only stay in the inbox for short time and then disappears ?

If I read the mail then I can find it in read mails, but the mails also disappears from that folder?

Must be a setting problem, but cannot figure it out.

Please help

BR

I deleted my Thunderbird account and created a new one on the same computer. I used a Profile saved on my external hard drive. The address book info was replicated. The hierarchy of folders and their emails were not replicated in the left hand pane. Is there a way to retrieve those folders with their content? Please, I am not super techno-savvy, so take me step by step. Thank you.

Hi everyone,

I’ve been testing a simple online click counter to track clicks and sometimes test my clicking speed. The tool works fine most of the time, but in Firefox I noticed that after refreshing the page the counter occasionally keeps the previous number instead of resetting to 0.

This is the tool I’m testing: https://thetallycounter.com/

I’m not sure if it’s related to Firefox caching or local storage behavior. Has anyone experienced something similar with web tools that store values in the browser?

Would clearing cache or disabling something fix it, or could it be a Firefox-specific issue?

Thanks!

Hello everyone,

I’m wondering what exactly "remote improvements" actually are.

Mozilla says: "Remote improvements range from fixes to feature changes to Firefox. They are delivered remotely between versions and updates to make your browsing experience stabler and richer (...)."

They are not studies or A/B tests, as those are enabled/disabled separately. They also do not concern WebCompat shims, Safe Browsing, or similar features, nor larger security fixes or more significant bugs that are resolved with a out-of-band update – correct? Is it similar to Windows CU Previews - meaning improvements, fixes, and feature changes that would be included in the next upcoming regular update anyway? Not a case of "let’s roll something out and see how users react" thing?

Have I understood that correctly?

Thanks and best regards, Martin

I've lost my password, but I believe I have retrieved it from the Profile. The entry reads: "encryptedPassword":"MEIEEPgAAAAAAAAAAAAAAAAAAAEwFAYIKoZIhvcNAwcECOabVSCGHBLGBBiqEqUXu8w7N4eAi09k0ZOIVAcs0chiziM=". Please would you indicate how to decrypt. Promptly upon resolution, I shall obviously change the password using the regular Thunderbird method.

For over a year now, I have had to resort to the Orange.fr e-mail client, which is much less satisfactory. I have used a Demo version of "Passware kit" to seek to retrieve the elusive password, and have received no satisfactory answer from it. I am not prepared to pour good money after bad.

A software solution is only as good as the support the publisher provides for it. Please answer soon.

I emphasise that, as a regular contributor of funds in the past, my continued funding of Mozilla Firefox and Thunderbird depends on your answering with a satisfactory, workable solution to my long-standing plight, contingent upon decryption of the password above.

Adam Warren FRSA [edited from public community support forum] @orange.fr

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(t=27.6543) |[27]CP+[GFX1-]: IPC Channel is already torn down unexpectedly
(t=27.6543) |[28][GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=31.3125) |[14][GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7753) |[15]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7756) 

HeadlessMode: 0 InstallTime: 1772714308 LastStartupWasCrash: 0 LauncherProcessState: 0 ModuleSignatureInfo: {"Mozilla Corporation":["firefox.exe","xul.dll","gkcodecs.dll","nss3.dll","freebl3.dll","softokn3.dll","mozglue.dll","lgpllibs.dll"],"Microsoft Windows":["Windows.Security.Integrity.dll","ondemandconnroutehelper.dll","wscapi.dll","linkinfo.dll","explorerframe.dll","dataexchange.dll","wshbth.dll","twinapi.dll","msimg32.dll","winmm.dll","AudioSes.dll","dbgcore.dll","dbghelp.dll","winrnr.dll","pnrpnsp.dll","wininet.dll","directmanipulation.dll","DWrite.dll","FWPUCLNT.DLL","urlmon.dll","Windows.UI.Immersive.dll","iertutil.dll","Windows.Globalization.dll","winhttp.dll","OneCoreUAPCommonProxyStub.dll","BCP47mrm.dll","InputHost.dll","textinputframework.dll","rasadhlp.dll","srvcli.dll","Windows.UI.dll","NapiNSP.dll","Bcp47Langs.dll","ktmw32.dll","wsock32.dll","MMDevAPI.dll","mscms.dll","ColorAdapterClient.dll","npmproxy.dll","dhcpcsvc6.DLL","dhcpcsvc.dll","twinapi.appcore.dll","version.dll","winnsi.dll","WindowManagementAPI.dll","avrt.dll","taskschd.dll","netprofm.dll","nlaapi.dll","propsys.dll","wtsapi32.dll","d3d11.dll","WinTypes.dll","dcomp.dll","CoreUIComponents.dll","CoreMessaging.dll","uxtheme.dll","dwmapi.dll","kernel.appcore.dll","windows.storage.dll","dxgi.dll","ntmarta.dll","rsaenh.dll","IPHLPAPI.DLL","dnsapi.dll","netutils.dll","mswsock.dll","cryptsp.dll","CRYPTBASE.dll","wldp.dll","winsta.dll","ntasn1.dll","ncrypt.dll","msasn1.dll","devobj.dll","umpdc.dll","powrprof.dll","userenv.dll","sspicli.dll","profapi.dll","wintrust.dll","win32u.dll","bcrypt.dll","gdi32full.dll","cfgmgr32.dll","KERNELBASE.dll","ucrtbase.dll","crypt32.dll","msvcp_win.dll","bcryptPrimitives.dll","imm32.dll","rpcrt4.dll","user32.dll","nsi.dll","shlwapi.dll","imagehlp.dll","kernel32.dll","shell32.dll","setupapi.dll","SHCore.dll","sechost.dll","clbcatq.dll","ws2_32.dll","oleaut32.dll","combase.dll","advapi32.dll","gdi32.dll","msctf.dll","psapi.dll","ole32.dll","msvcrt.dll","ntdll.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll"]} NimbusEnrollments: 1-callout-contextual-chatbot-suggestion-treatment-a-rollout-v2:treatment-a-tab-switching-copy,ai-chatbot-page-summarization-mvp-treatment-a-callout-badge-rollout-v4:treatment-a-callout-badge,backgroundupdate-enable-unelevated-installations-rollout-3-release:enabled,client-side-sampling-of-performance-metrics:control,context-id-rotation-every-3-days:control,desktop-credit-card-autofill-global-enablement-rollout-release:creditcard-enable,desktop-release-rollout-show-relay-to-all-browsers-next-sign-up-modal-cta:next-sign-up-modal-cta,disable-enrollment-status-telemetry-for-firefox-desktop-via-nimbustelemetry:control,downsample-uptakeremotecontent-events-glean-feature:control,enable-nimbus-unenrollment-synchronization:control,encrypted-client-hello-fallback-mechanism:control,enforce-crlite-results-and-limit-use-of-ocsp-rollout:enforce,fast-udp-for-firefox-treatment-fast-udp-release-rollout:treatment-fast-udp,firefox-backup-feature-gradual-rollout:treatment,fx-accounts-ping-release-rollout-2:control,hnt-weather-with-location-selector-non-eu-expansion-asian-language-family:control,local-network-access-enablement-etp-stricr-147-148:lna-enabled,long-term-holdback-2026-growth-desktop:delivery,new-tab-149220260220204414-to-release-148:rollout,new-tab-content-ping-rest-of-world-rollout:treatment,pin-frequently-used-websites-promo-rollout-day-3-users-all-locales:rollout-branch,private-window-visual-refresh-rollout:control,rollout-sponsored-topsites-in-southeast-asia-and-hong-kong:control,set-to-default-hamburger-menu-rollout:treatment-c,smart-shortcuts-v3-lr2-no-lr-rollout:no-lr,unified-api-for-spocs-and-top-sites-controlled-rollout-for-release-133:control,upgraded-sidebar-rollout-without-messaging:rollout-treatment,vertical-tabs-promo-rollout-day-3-profiles-all-locales:treatment-a,visual-card-updates:updated,visual-search-rollout:google-lens-rollout,windows-ui-automation-release-rollout:rollout,enable-ohttp-for-mars-communications-on-release:control,introduce-search-on-new-tab-page-copy-in-countries-with-no-content-re-run:variant-a Notes: -L1000-W0000100-T1) DWrite? DWrite+ WR? 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useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.

Good morning

Since this morning (05/03/2026) Thunderbird freezes within a minute or two of opening the program.

Everything in the program freezes up. I cannot even close it.

I am running Version 140.8.0esr on a Windows 10 PC.

Initially I was getting a pop up warning message that ask me to confirm if I wanted to send an email with attachments of over 20 MB. There were 3 or 4 such messages. I had not tried to send such emails.

I checked the Outbox in Local folders for old messages, but it was empty. I also checked the Unsent messages files in Local Folders in the Profile folder. I deleted the Unsent Messages.msf file to no effect. I renamed and replaced the Unsent messages file. Also no change.

I checked for crash logs but there are none.

I have run out of ideas as to what to try next. Does anyone have any advice?

I cant receive emails only send them. I receive an error message when starting Thunderbird "the current operation on inbox <my email address> did not succeed"

Hi everyone,

I recently built a small Firefox extension for my website https://calcolo-stpendionetto.it https://calcolo-stpendionetto.it , which helps users calculate their net salary in Italy using updated IRPEF and INPS rates.

However, when I try to upload the extension to addons.mozilla.org addons.mozilla.org (AMO), I keep getting this error message: Signing is not possible due to an error with the manifest file

{

 "manifest_version": 2,
 "name": "Calcolo Stipendio Netto",
 "version": "1.0",
 "description": "Calculate your Italian net salary (IRPEF, INPS, regional tax) quickly.",
 "icons": {
   "48": "icons/icon48.png",
   "128": "icons/icon128.png"
 },
 "browser_action": {
   "default_popup": "popup.html"
 },
 "permissions": ["activeTab"]

} I also tried switching to manifest_version 3, but then Firefox gave a warning that some properties like browser_action are deprecated or not recognized.

Has anyone experienced the same issue when uploading finance or calculator-related extensions? Is there a new manifest format or signing rule I might be missing for Firefox extensions?

Any help or examples from working extensions would be greatly appreciated. Marien Klin