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Hi, I used Firefox browser at work since it had the best add-in for tab groups (Simple Tab Groups). Unfortunately browser is not supported any more. Is there a portable version that can be run without installing, from Mozilla.

I read a post that indicated it was available from PortableApps, but am not conversant enough to know that it's 100% safe. Believe that it was able to be updated as well.

Hi all,

as per subject, with Thunderbird 128.3.0esr in Multiweek and Month calendar views I can't move elsewhere an event with drag & drop, while I can do it in Day and Week views: am I missing anything?

Many thanks

I'm on an Mi Mac Mini and I was on 14.6.1 when TB updated to 128.3 esr and it crashed repeatedly. So I undated to Sequoia 15.0. That didn't help. It still crashes the minute I click into the program to open an email. I believe my only choice is to go back to an earlier version on time machine and turn off my automatic update. Any suggestions? This really sucks, guys.

Interestingly enough, I can still get my email on my iPhone running 17.6.1.

It seems from reading on forums and googling that there is a "return receipt" function in Thunderbird. My problem is I can't find it anywhere in my software. I've searched in every category and can't even find an "Options" on the menu. I remember when Thunderbird did have a "return receipt" that was very easy to find. Now it seems that it has disappeared altogether. What gives?

I have been using thunderbird for years and have 2 lightning calendars. These are stored locally in home/.thunderbird on Ubuntu - currently 24.01.1LTS, TB version just updated to 128.3.0esr. About a week ago I stopped being able to save calendar events, getting the message

An error occurred when writing to the calendar Home! Please see below for more information. Error code: MODIFICATION_FAILED. Description: Failed to write to calendar file file:///home/alasdair/.thunderbird/Home.ics: Could not create unique file in `/home/alasdair/.thunderbird' (NS_ERROR_FILE_ACCESS_DENIED)

I have uninstalled and reinstalled thunderbird to no effect. As I am the only user of the machine all prcesses run as me, the .thunderbird directory is owned by me and I have all permissions on it, as I have for all files in the directory. I can create and edit files there no problem. I have no idea how to d=fix this.

I have loved FF desktop browser since I started using it per my boss in 2003. But I am so tired of the fact that EVERY SINGLE TIME you put out an update it breaks my access to the bank. EVERY SINGLE TIME. I waste HOURS reading articles, calling the bank IT dept, chatting with people who are on 3 calls at once, only to hear them tell me to "just use chrome." I clear the cookies, clear the cache, reboot, follow all the prompts in the settings and THEN the damned bank server doesn't recognize the device so it forces yet ANOTHER password change. It happened again TODAY and it makes me so sad but I cannot do it anymore. I am STILL now (going on 4 hours) trying to access the billpay page @ Xantanderbank. (ahem, secure codename) I am forced now, by this craziness, to use the imbecilic duckduckgo which is A) and offensive name and b) you KNOW it nowhere near the product you have built but I CANNOT DO THIS ANYMORE. Thank you for the time it takes to read this diatribe. I appreciate it.

Latest update, 4. oct. Using Firefox Developer Edition. Closed the browser window for the day, and then on opening again it had updated, my entire toolbar, and also icons where the tabs are, are just gone - including the "+" icon for creating a new tab, along with the bookmarks bar having vanished. Picture added below.

It seems like the bookmarks bar is still there, you just can visibly see any bookmarks. Tried adding a new bookmark, but nothing appeared.

How can I fix this?

I have installed T'bird in a new replacement pc and also added my two accounts. However, I now need to include my many Local Folders using Profile Folder information from the old pc.

Should I delete all the account information I have installed in my new pc T'bird prior to installing the Profile Folder copy? Thanks Ron

I hope I’ve chosen the correct category. I believe this qualifies as a bug following the recent update.

When I opened Thunderbird today, it notified me about the update. While Thunderbird successfully fetches new emails, it fails to display them correctly.

As shown in the screenshot, the area where the email content should appear is completely white. Additionally, it incorrectly displays an attachment from an old email that has nothing to do with today’s email (10:13), aside from the fact that both were sent to me.

When I click on other emails in the same inbox, the content area doesn’t change—it remains blank. However, if I switch to a different inbox, everything works fine.

I’ve also double-checked using my phone’s mail app, and I’m able to open the email in that inbox without any issues.

I’m unsure how to fix this. Could someone more knowledgeable help me out?

How can I implement my previous profile in 128.3.0 after inadvertent (release channel) automatic update to 131.0 followed by downgrade (uninstall/download/reinstall from thunderbird.net) to latest supported esr release, as recommended.

My last profile worked fine after auto update to 131.0 with emails, local folders, calendar, rules, contacts, etc. all available. Now, when attempting to launch or use that previous profile in reinstalled 128.3 popup advises: "You have launched an older version of Thunderbird." "A newer version of Thunderbird may have made changes to your profile which are no longer compatible with this older version. Use this profile only with that newer version or create a new profile."

Only options then available are "Exit" or "Create New Profile." TB 128.3 will recognize only a newly created generic profile, but not allow previous profile to be launched or set as default from Profile Manager.

Essentially, the options are: 1) Use your previous profile, but only with the Beta 131 release 2) Use the latest supported (128.3) release but only with a newly created profile, not yours.

I've seen this problem posted in several forms by people unknowingly on the "release" update channel who got the 131 release and can't implement their profile after downgrading to the esr release. The recommendations I've found to address this problem seem to lead one to a circular return to the problem.

John C

Since updating Thunderbird on Friday, the application crashes right after opening, even in safe mode. This happens repeatedly, after several reboots and restarting application in normal and safe mode.

OS: Windows 10 App version: latest unknown.

Please assist. Details below.

Report Contents

Crash ID is: bp-9d476fe2-c377-4f9c-9908-b7fa80200924

I just erased all my profile files, trashed the Application that was in my machine and installed a new one from scratch. It worked for a few hours but crashed again. Opening in Safe Mode gives the same result.

AdapterDeviceID: 0x694c AdapterDriverVersion: 31.0.21001.46001 AdapterSubsysID: 20738086 AdapterVendorID: 0x1002 Add-ons: tbsync%40jobisoft.de:4.11,dav4tbsync%40jobisoft.de:4.8,uBlock0%40raymondhill.net:1.49.2,default-theme%40mozilla.org:1.3,google%40search.mozilla.org:1.0,ddg%40search.mozilla.org:1.0,amazondotcom%40search.mozilla.org:1.1,wikipedia%40search.mozilla.org:1.0,bing%40search.mozilla.org:1.0 AvailablePageFile: 41078267904 AvailablePhysicalMemory: 26196316160 AvailableVirtualMemory: 138522462175232 BackgroundTaskMode: 0 BuildID: 20240820161839 CPUMicrocodeVersion: 0xb4 ContentSandboxCapable: 1 ContentSandboxLevel: 1 ContentSandboxWin32kState: Win32k Lockdown enabled -- default value is true CrashTime: 1728276727 DOMFissionEnabled: 1 DOMIPCEnabled: 1 EMCheckCompatibility: true EventLoopNestingLevel: 1 GPUProcessLaunchCount: 1 GPUProcessStatus: Running GpuSandboxLevel: 1 HeadlessMode: 0 InstallTime: 1728025349 LastStartupWasCrash: 1 LauncherProcessState: 0 ModuleSignatureInfo: {"Microsoft Windows":["usp10.dll","winrnr.dll","pnrpnsp.dll","NapiNSP.dll","Windows.Security.Integrity.dll","TaskFlowDataEngine.dll","explorerframe.dll","ntshrui.dll","dataexchange.dll","twinapi.dll","linkinfo.dll","wsock32.dll","cdp.dll","wscapi.dll","dbgcore.dll","cscapi.dll","ondemandconnroutehelper.dll","OneCoreCommonProxyStub.dll","wininet.dll","directmanipulation.dll","rasadhlp.dll","Windows.Globalization.dll","DWrite.dll","FWPUCLNT.DLL","urlmon.dll","Windows.UI.Immersive.dll","srvcli.dll","iertutil.dll","InputHost.dll","TextInputFramework.dll","npmproxy.dll","BCP47mrm.dll","Windows.UI.dll","Bcp47Langs.dll","winmm.dll","ktmw32.dll","OneCoreUAPCommonProxyStub.dll","ColorAdapterClient.dll","winhttp.dll","mscms.dll","twinapi.appcore.dll","WindowManagementAPI.dll","dbghelp.dll","dhcpcsvc.dll","dhcpcsvc6.DLL","MMDevAPI.dll","AudioSes.dll","CoreUIComponents.dll","d2d1.dll","avrt.dll","wshbth.dll","d3d11.dll","dcomp.dll","WinTypes.dll","winnsi.dll","CoreMessaging.dll","wtsapi32.dll","nlaapi.dll","version.dll","dsreg.dll","policymanager.dll","propsys.dll","netprofm.dll","uxtheme.dll","dwmapi.dll","kernel.appcore.dll","windows.storage.dll","dxgi.dll","winsta.dll","msvcp110_win.dll","ntmarta.dll","umpdc.dll","IPHLPAPI.DLL","netutils.dll","dnsapi.dll","powrprof.dll","mswsock.dll","CRYPTBASE.DLL","wldp.dll","cryptsp.dll","msasn1.dll","devobj.dll","userenv.dll","sspicli.dll","profapi.dll","gdi32full.dll","wintrust.dll","KERNELBASE.dll","ucrtbase.dll","bcrypt.dll","win32u.dll","cfgmgr32.dll","bcryptPrimitives.dll","msvcp_win.dll","crypt32.dll","setupapi.dll","psapi.dll","rpcrt4.dll","oleaut32.dll","shell32.dll","combase.dll","clbcatq.dll","ole32.dll","SHCore.dll","kernel32.dll","nsi.dll","msvcrt.dll","sechost.dll","imm32.dll","user32.dll","msctf.dll","gdi32.dll","ws2_32.dll","shlwapi.dll","advapi32.dll","ntdll.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140_1.dll","VCRUNTIME140.dll"],"Mozilla Corporation":["thunderbird.exe","rnp.dll","xul.dll","gkcodecs.dll","freebl3.dll","nss3.dll","nssckbi.dll","mozglue.dll","softokn3.dll","lgpllibs.dll"]} Notes: Has dual GPUs. GPU #2: AdapterVendorID2: 0x8086, AdapterDeviceID2: 0x591b, AdapterSubsysID2: 20738086, AdapterDriverVersion2: 30.0.101.1660FP(D00-L1000-W0000100-T00) DWrite? DWrite+ WR? WR+ ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird QuotaManagerStorageIsNetworkResource: 0 ReleaseChannel: esr SafeMode: 0 SecondsSinceLastCrash: 80 StartupCacheValid: 0 StartupCrash: 0 StartupTime: 1728276723 SubmittedFrom: Client SystemMemoryUsePercentage: 23 TelemetryClientId: 883ecf00-ea60-465f-bacd-8ab9061444e8 TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"x86-64","buildId":"20240820161839","version":"128.1.1","vendor":null,"displayVersion":"128.1.1esr","platformVersion":"128.1.0","xpcomAbi":"x86_64-msvc","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":32687,"virtualMaxMB":134217728,"cpu":{"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2","hasAES"]},"os":{"name":"Windows_NT","version":"10.0","locale":"en-NZ","servicePackMajor":0,"servicePackMinor":0,"windowsBuildNumber":19045,"windowsUBR":4894},"hdd":{"profile":{"model":null,"revision":null,"type":null},"binary":{"model":null,"revision":null,"type":null},"system":{"model":null,"revision":null,"type":null}},"gfx":{"D2DEnabled":true,"DWriteEnabled":true,"ContentBackend":"Skia","Headless":false,"EmbeddedInFirefoxReality":false,"TargetFrameRate":60,"adapters":[{"description":"Radeon RX Vega M GH Graphics","vendorID":"0x1002","deviceID":"0x694c","subsysID":"20738086","RAM":4096,"driver":"aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a","driverVendor":null,"driverVersion":"31.0.21001.46001","driverDate":"6-28-2023","GPUActive":true},{"description":"Intel(R) HD Graphics 630","vendorID":"0x8086","deviceID":"0x591b","subsysID":"20738086","RAM":0,"driver":"igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32","driverVendor":null,"driverVersion":"30.0.101.1660","driverDate":"3-18-2022","GPUActive":false}],"monitors":[{"screenWidth":3440,"screenHeight":1440,"refreshRate":60,"pseudoDisplay":false}],"features":{"compositor":"webrender","hwCompositing":{"status":"available"},"gpuProcess":{"status":"available"},"webrender":{"status":"available"},"wrCompositor":{"status":"available"},"openglCompositing":{"status":"unused"},"omtp":{"status":"unused"},"d3d11":{"status":"available","version":45312,"warp":false,"textureSharing":true,"blocklisted":false},"d2d":{"status":"available","version":"1.1"}}},"appleModelId":null,"hasWinPackageId":false,"sec":{"antivirus":["Microsoft Defender Antivirus"],"antispyware":null,"firewall":["Windows Firewall"]}},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"fissionEnabled":true,"telemetryEnabled":false,"locale":"en-US","intl":{"requestedLocales":["en-US"],"availableLocales":["en-US"],"appLocales":["en-US"],"systemLocales":["en-NZ","zh-Hant-TW"],"regionalPrefsLocales":["en-NZ"],"acceptLanguages":["en-US","en"]},"update":{"channel":"esr","enabled":true,"autoDownload":true,"background":true},"userPrefs":{"browser.search.region":"NZ","network.trr.strict_native_fallback":false,"widget.content.gtk-high-contrast.enabled":true},"sandbox":{"effectiveContentProcessLevel":1,"contentWin32kLockdownState":15},"launcherProcessState":0,"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null},"profile":{"creationDate":19344,"firstUseDate":19344},"addons":{"activeAddons":{"uBlock0@raymondhill.net":{"version":"1.49.2","scope":1,"type":"extension","updateDay":19494,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Finally, an efficient blocker. Easy on CPU and memory.","name":"uBlock Origin","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19494,"signedState":0,"signedTypes":"[]","quarantineIgnoredByApp":false,"quarantineIgnoredByUser":false},"dav4tbsync@jobisoft.de":{"version":"4.8","scope":1,"type":"extension","updateDay":20000,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"This add-on is being discontinued because Thunderbird natively supports this feature.","name":"Provider for CalDAV & CardDAV","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19448,"signedState":0,"signedTypes":"[]","quarantineIgnoredByApp":false,"quarantineIgnoredByUser":false},"tbsync@jobisoft.de":{"version":"4.11","scope":1,"type":"extension","updateDay":20000,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"TbSync is a central user interface to manage cloud accounts and to synchronize their contact, task a","name":"TbSync","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19448,"signedState":0,"signedTypes":"[]","quarantineIgnoredByApp":false,"quarantineIgnoredByUser":false}},"theme":{"id":"default-theme@mozilla.org","blocklisted":false,"description":"Follow the operating system setting for buttons, menus, and windows.","name":"System theme — auto","userDisabled":false,"appDisabled":false,"version":"1.3","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19344,"updateDay":19344},"activeGMPlugins":{"dummy-gmp":{"version":"0.1","userDisabled":false,"applyBackgroundUpdates":1}}}} TelemetryServerURL: https://incoming-telemetry.thunderbird.net TelemetrySessionId: 10fce786-3002-4eca-be92-9e0033096565 Throttleable: 1 TotalPageFile: 52528123904 TotalPhysicalMemory: 34274512896 TotalVirtualMemory: 140737488224256 UptimeTS: 40.4371 User32BeforeBlocklist: 1 Version: 128.1.1 Winsock_LSP: MSAFD Tcpip [TCP/IP] : 2 : 2 : 1 : 6 : 0x20066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192

MSAFD Tcpip [UDP/IP] : 2 : 2 : 2 : 17 : 0x20609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192 
MSAFD Tcpip [RAW/IP] : 2 : 2 : 3 : 0 : 0x20609 : 0xc : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192 
MSAFD Tcpip [TCP/IPv6] : 2 : 23 : 1 : 6 : 0x20066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
MSAFD Tcpip [UDP/IPv6] : 2 : 23 : 2 : 17 : 0x20609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
MSAFD Tcpip [RAW/IPv6] : 2 : 23 : 3 : 0 : 0x20609 : 0xc : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
AF_UNIX : 2 : 1 : 1 : 0 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : a00943d9-9c2e-4633-9b59-0057a3160994 
RSVP TCPv6 Service Provider : 2 : 23 : 1 : 6 : 0x22066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP TCP Service Provider : 2 : 2 : 1 : 6 : 0x22066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP UDPv6 Service Provider : 2 : 23 : 2 : 17 : 0x22609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP UDP Service Provider : 2 : 2 : 2 : 17 : 0x22609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
Hyper-V RAW : 2 : 34 : 1 : 1 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 1234191b-4bf7-4ca7-86e0-dfd7c32b5445 
MSAFD L2CAP [Bluetooth] : 2 : 32 : 1 : 256 : 0x20006 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9fc48064-7298-43e4-b7bd-181f2089792a 
MSAFD RfComm [Bluetooth] : 2 : 32 : 1 : 3 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9fc48064-7298-43e4-b7bd-181f2089792a

useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.

After an update of both macOS (to macOS Sequoia 15.0.1) and Firefox Developer Edition (to 132.0b3 (aarch64)), the Bookmarks Toolbar stopped working. The same issue appeared on my Windows PC.

Bookmarks toolbar is visible, I can show and hide it but it does not display any of my saved bookmarks. Luckily, they were not deleted and I still can access them via Bookmarks Menu, which is less than optimal.

The Drag&Drop functionality does not work either. When I grab the opened Tab, drag it on the Toolbar and release it, the Tab gets opened in the new browser window and it's not saved.

Good morning, I had asked a question early on Saturday, but was unavailable the rest of the weekend so just now responding to associate Corey Bryan's answer. I had gotten a message that I am using an unsupported version and they recommend downloading the latest stable version.

He said it appears that I'm on the "Release" channel and most likely want to be on the ESR channel. I also mentioned that I am a cave-man when it comes to anything computer and am very skittish about making any changes as I don't how to straighten out any errors that might occur.

He asked me where I installed Thunderbird from and the answer is that I don't know. It was an IT guy that did it many years ago.

So I guess my questions are, if I've been using this version for years, do I need to or should I update it? If so, if I click on the latest stable version of Thunderbird, will that change anything on my computer, aside from getting the newer version of T-Bird? And will my e-mails in Thunderbird look any different?

Thanks very much for the help. Tony

I'm using Firefox Developer Edition 132.0b3 (64 bit) which I downloaded just a few days ago. Already, there's an update for it, to version 132.0b4. Each time I open Firefox, there's this popup that tells me that there's an update available and that I need to download it. I'm using Linux Mint 21. I've already visited about:config and changed app.update.silent to true, changed app.update.manual to true, and changed app.update.url.details and app.update.url.manual to fake hyperlinks. Despite doing this and despite restarting, I'm still prompted about the update available every single time I open Firefox. Could someone kindly tell the specific developer who implemented this annoying feature, to please provide an option for Users to not be bothered with such popup notifications?

ps: Why does this website have a white background and not allow extensions to change it to a dark background? I have Dark Reader extension installed, but it says that it cannot make changes to this website. Even uBlockOrigin is unable to. Please either allow extensions to change the background, or at least change the background color of this website to dark. It gets strenuous on the eyes to keep staring at a bright white backgrond.

After a windows update I get the following message when I try to open Firefox: The procedure entry point ?ToLogLevel@mozilla@@VA?AW4LogLevel@1@H@Z could not be located in the dynamic link library C:ProgramFiles\Mozilla Firefox\xul.dll Then I get Couldn't load XPCOM

I tried uninstalling firefox but it just hung. I restored it to before the windows update but still got the same message

Hi really sorry about this I'm new to Firefox & I don't know how to report a possible bug or if this is even a bug but I opened Firefox this morning & my search bar is now at the bottom of my screen even after closing & reopening it