I-Thunderbird Community Forum

My Thunderbird (version 115.12.2) is running on a Windows 11 system. My profile has multiple accounts configured as IMAP to multiple email services. I also have the Status Bar and Activity indicator enabled. Randomly, both indicators will show busy for an extended period of time. When I view this in the Activity Manager I see one or more folders hung for 10 or 20 minutes downloading one message out of several. This occurs in multiple accounts and servers.

I have researched this and attempted the fixes presented. I have cleared the cache files and compacted and rebuild email folders as suggested, but the slow update still occurs.

Then I decided to try and capture a ProMon.exe trace to see what is happening. What I found was Thunderbird.exe was spending all of the time while hung access the following file: C:\Users\MyUser\AppData\LocalLow\Intel\ ShaderCache\4a5eb0e65e559fc08e65ecb2fa9d650817ae895582a7a7ede162866d3e47a05a, like it was stuck in a loop.

When Thunderbird is operating normally, it is accessing this file but only for short period of times. Research says that it is ok to delete the files in this folder. I did that and it seemed to help for awhile. But it started happening again.

Does anyone have any idea what could be causing this? Is there a Windows thing to look further into? Any help would be greatly appreciated.

I use TBird/GMail on two Windows 11 machines - a desktop and a laptop. In my All Mail folder there many emails promoting misc items, in fact over 1000 that I do not want. I have set server settings to delete immediately but no matter how I try the deleted emails reappear. They are not in the Bin or Trash. I get the same results using either the laptop or the desktop. Any ideas?

Upgraded from Windows 10 to 11 a couple months ago. Since then, TB freezes nearly every time I am composing an email. "Help About" says TB is up to date. Remedies? Or do I have to wait for a new version?

Chris Sackett

I have turned off every junk filtering option in Thunderbird, globally and for each account, yet the application started and continues to mark nearly every incoming email I receive as possible junk -- even emails from MOZILLA... It is not my ISP, nor my email provider, as they are not filtering junk, either. The banner on the preview window says "Thunderbird thinks this message is Junk mail", so that tells me it is THUNDERBIRD that is doing this. How can I get the app to stop??? There are no helpful conversations in the forum, since I've tried all of the solutions that were presented. I'm about to just delete the app and use something else which is a shame since I've been using Thunderbird for probably 20 years, but I cannot continue if this problem does not stop.

Hi I was using TB 142 without problems. When upgrading to 143 ou 144.B4 I have problems sending mails to all users after some times. Usually the first mails are sent immediatly but after around 10 mails, I have very slow response (varies from 5 sec to more than 1 minute and sometimes timeout). Usually quitting TB solves the problem but this is very annoying. I went back to 140LTS and sems to have no longer this problem. This was tested on many diffrent networks. I am running under Fedora release 42

Thanks

why can't I ask the actual writers of the program for help, instead of the community? The community is not in charge of writing this program, nor the cause of its problems. The programmers are!

Right after typing my email address and pressing "Continue", Thunderbird crashes. I wanted to give it a try after many years of not using it, but then it crashes right at the start.

Here's the crash report:

AdapterVendorID: 0x106b AvailablePhysicalMemory: 6554927104 AvailableSwapMemory: 1233125376 BackgroundTaskMode: 0 BuildID: 20251016001905 ContentSandboxCapable: 1 ContentSandboxLevel: 3 CrashTime: 1760704144 DOMFissionEnabled: 1 DOMIPCEnabled: 1 EMCheckCompatibility: true EventLoopNestingLevel: 1 GpuSandboxLevel: 0 GraphicsNumActiveRenderers: 0 GraphicsNumRenderers: 1 HeadlessMode: 0 InstallTime: 1760652930 LastStartupWasCrash: 0 MacAvailableMemorySysctl: 91 MacMemoryPressure: Normal MacMemoryPressureCriticalTime: Unset MacMemoryPressureNormalTime: 1760704136 MacMemoryPressureSysctl: 1 MacMemoryPressureWarningTime: Unset Notes: FP(D10-L1000-W0000000-T01) WR? WR+ GL Context? GL Context+ ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird PurgeablePhysicalMemory: 465715200 RDDProcessStatus: Running ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 825 StartupCacheValid: 1 StartupCrash: 0 StartupTime: 1760704136 SubmittedFrom: Client TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"aarch64","buildId":"20251016001905","version":"144.0.1","vendor":"Mozilla","displayVersion":"144.0.1","platformVersion":"144.0","xpcomAbi":"aarch64-gcc3","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":65536,"virtualMaxMB":null,"cpu":{"extensions":["hasNEON"]},"os":{"name":"Darwin","version":"23.5.0","locale":"en-IL"},"hdd":{"profile":{"model":null,"revision":null,"type":null},"binary":{"model":null,"revision":null,"type":null},"system":{"model":null,"revision":null,"type":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","Headless":false,"TargetFrameRate":60,"textScaleFactor":1,"adapters":[{"description":null,"vendorID":"0x106b","deviceID":null,"subsysID":null,"RAM":0,"driver":null,"driverVendor":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":2560,"screenHeight":1440,"defaultCSSScaleFactor":1,"contentsScaleFactor":1},{"screenWidth":3024,"screenHeight":1964,"defaultCSSScaleFactor":2,"contentsScaleFactor":2}],"features":{"compositor":"webrender","hwCompositing":{"status":"available"},"gpuProcess":{"status":"unused"},"webrender":{"status":"available"},"wrCompositor":{"status":"available"},"openglCompositing":{"status":"available"},"omtp":{"status":"unused"}}},"appleModelId":"Mac14,5","hasWinPackageId":null},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"fissionEnabled":true,"locale":"en-US","intl":{"requestedLocales":["en-US"],"availableLocales":["en-US"],"appLocales":["en-US"],"systemLocales":["en-IL","he-IL"],"regionalPrefsLocales":["en-IL","he-IL"],"acceptLanguages":["en-US","en"]},"update":{"channel":"release","enabled":true,"autoDownload":true,"background":true},"userPrefs":{"browser.search.region":"DE","network.http.microsoft-entra-sso.enabled":false,"network.trr.strict_native_fallback":false,"widget.content.gtk-high-contrast.enabled":true},"sandbox":{"effectiveContentProcessLevel":3,"contentWin32kLockdownState":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null,"defaultSearchEngine":"ddg","defaultSearchEngineData":{"loadPath":"[app]ddg","name":"DuckDuckGo","submissionURL":"https://duckduckgo.com/?q="}},"profile":{"creationDate":20377,"firstUseDate":20377},"addons":{"activeAddons":{},"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":"1.4.2","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":20377,"updateDay":20377},"activeGMPlugins":{"dummy-gmp":{"version":"0.1","userDisabled":false,"applyBackgroundUpdates":1}}}} Throttleable: 1 TotalPhysicalMemory: 68719476736 UptimeTS: 7.916666666666666 Vendor: Mozilla Version: 144.0.1 useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.

I am getting sick and tired of Thunderbird freezing while writing an email, screen graying out, and having to close the program and lose the material without it having been saved in any way. This has been happening for two or three weeks.

Yes..I've read the solution for this. Create seperate SMPT accounts with their own unique user name connected to the account in question and make sure they have the right smpt user name etc (tools>account settings>outgoing server (SMPT)> EDIT.

I haver a list of all my hotmail (and yahoo) accounts in there with the appropriate SMPT settings and user names unique to each account.

But when sending an email, it STILL errors-out with something like 'user1@hotmail.com not allowed to send mail as username2@hotmail.co.uk'.

I don't know where to go with this - thunderbird appears to insist on mixing up the identities despite me telling it otherwise.

i have pop3 account and unchecked leave on server - but greyed and checked out is a 'leave for a maximum' which i have as 1 day, there doesnt seem to be an option to uncheck this? I dont want them on the server which is why i chose pop account. yet when i open web account, the emails already downloaded using the pop account are still there even thoug they were downloaded days ago. Why is this and how do stop this? is there a 'leave copy on server' box to uncheck that I am missing? i want to use pop to remove from server and just use locally but its not doing what i thought it would, which is remove from setver. Also it keeps repeating downloading from years ago so I was hoping that when the server synced it would stop downloading the ones it has already (mulitple times) I made an imap account to try to sort emails that way but it also shows old emails still on server. Should i delet this imap account as I already have a pop account running? Very confused. Help figuring out what to do appreciated.

Thunderbird stopped receiving emails the day before. Now when I start Thunderbird I am being redirected to pinterest to sign in with username and password...not doing it. Hoping someone can help resolve this issue before I reformat my computer. Have not had this issue in the past and have been using Thunderbird for many many years, happened all of a sudden.

Hi to all.

I've had one of my TB configured email accounts disabled so I cannot login to it. How can I avoid TB to show me again and again that it's not able to connect that account? I just want to keep the already received/sent emails there in TB but it goes on and on showing that message even if I don't work on that account via TB anymore.

I've tried to unflag the option to check new messages from the Server options, but it didn't work. I've also tried to move all the emails/folder on local folders via TB interface, but this was made just partially possible because TB tried to login possibly due to some still-not-downloaded old messages which where made impossible to move. Moving all to a local folder will let me delete the account from TB and set me free from that annoying message which is also causing TB to be resource consuming, I don't know why, so that the laptop fan goes crazy (in such case, quitting TB causes the laptop fan to be back in peace in seconds).

Thanks. Regards.

I have tried several different approaches to correct this "mailbox://nobody@Local Folders/Archives" to set up my local folder and reduce my providers quota. but I havent been able to change it. Has anyone been able to fix this and direct it to a local NAS folder?

Since the error appeared that disabled the xPunge plugin (around TB 140), I have been compacting the folders in my 4 Thunderbird mail accounts manually. I wish there was a better way, but unfortunately not at this time. When I select to Empty Trash, I get messages showing quite an extensive dialog. It logs in, syncs, and even checks the folder capability of the server. When I select to Compact Files, I first get a simple message in the lower left corner "Compacting Files." Then I get messages showing each folder being compacted, and how much space was saved. It even shows reloading the last message at the end, even though the message is already there.

Since I now see this detailed dialog, I have noticed that, from time to time, the compacting fails. I get the first message, "Compacting Folders." But then nothing else. I also don't see the email message list go blank for a second when it is compacting the folder I am viewing. If I repeat the compacting folder command, it does the same thing. It appears that TB thinks the folders are already compacted, and takes no action. The only way I have found to get the compacting to work is to wait for more messages to come, delete the ones I don't want, and it will probably work on the next try. It seems to fail perhaps every 10th time or so.

Perhaps this is the same TB base code issue that is affecting xPunge? I do not get any errors, at least that I can recognize. I looked at the console, but I could not discern anything there that might be applicable - but that could be because I don't understand most of the messages there. Is there anything I can do to get around this issue? Thanks.

TB frequently freezes when writing a reply. There are no reports in crash reports. It shows this image, and says reporting to Microsoft when I click close. Version 140.4.0esr (64-bit)

How can I fix the problem?

After the most recent Thunderbird update, the connection with my Gmail account has become inconsistent, sometimes taking more than a day for Gmail messages to appear in my Thunderbird Inbox. What has changed, and how do I fix the problem?

Hello! I have a calendar connected via DAVMail (Exchange Server 2019), everything works. But when I create an event in the calendar and start adding participants, autocomplete does not work (there is no list to choose from the address book).

I have an LDAP address book configured for Global Address List (GAL) exchange.

I also imported the address book to Cardbook via .vcf.

How do I set up autocomplete in the calendar? (When writing an email, autocomplete works)

I deleted a profile from my Thunderbird account, but I keep getting a popup login screen. I can no longer access this profile. HOW can I get rid of this popup screen? It continues to popup every few minutes! Need it to stop!!

I have installed Thunderbird on a new computer and copied my profile from the old computer as per instructions on the Mozilla site. However on the install on the new computer the LOCAL FOLDERS, sub folders which I use as archive storage do not contain the messages as per the my old computer. The sub folders are named correctly.

I have attached photos of the sub folders from the old computer showing data in the sub folder and also the new computer showing no data.

Please advise how to retrieve the data for the new computer.