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I'm trying to setup Thunderbird for my Google Workplace account. 1. In the default settings, I receive the error message 'Profile not found' when I try and add my Outlook .PST file 2. I can't see how to access Profile Manager so I've started Thunderbird from the command line, activating the Profile manager, i.e. Thunderbird -p. When I add a profile and try and access my Google gmail I receive an error that the configuration server could not be found. Note point 1 where the same account was setup correctly but in the default 'no profile'.

Running Thunderbird 136.0 (current as of 14 March 2025) on Windows 11 machine. E-mail account is hosted on office365 and has a personal (i.e., myname@mydomain.com) SMTP error " Connection to server outlook.office365.com timed out" Parameters were set per recent article on thunderbird forum for office365.

Hello,

New subscriber here. I have been given the task to test the install and uninstall of the Purview Firefox browser extension using Intune. I created 2 groups in EntraID, one for each (install and uninstall).

I have no issues with the installation. Initially, I left the test device in the install group and then added it to the uninstall group to remove it. (this usually works with other apps, it worked this way with the Purview Chrome browsing extension as well other apps) but when I do this, nothing happens.

Next, I removed the device from the install group and added it to the uninstall group only. Once the configuration profile applies to the test device, it allows the user to remove it manually (before it did not) but the extension remains installed.

I have created a policy using the administrative template extension uninstall option as well as with the OMA-URI settings but the same happens. When i check the device configuration for the device in Intune, it says it succeeded but that is not the case. The OMA-URI setting I was not too sure about, but gave it a shot. I used the UUID value for the Purview Firefox extension

I am attaching some pictures and hope someone can tell me what I am doing wrong. I can add additional information, if needed. I have opened a ticket with Microsoft last week but have not called me yet. I ran into this forum today.

Thanks in advance

Hallo,

mein alter Rechner ist "gestorben", weshalb ich einen neuen brauchte. Vom alten Rechner hatte ich die drei Postfächer, mit denen ich "arbeite" gesichert und nun versucht, diese in der neuen thunderbird-Installation auf dem neuen Rechner einzuhängen, schrittweise, so wie in den FAQs zum Thema Import beschrieben.

Aber: Die alten Postfächer/Inhalte werden nicht angezeigt. Sie sind aber im Zielverzeichnis ".thunderbird" zu sehen und an der richtigen Stelle.

Ich bitte um Hilfestellung zur Problemlösung.

Danke im Voraus.

The situation is like this: I once reinstalled Edge, and then Firefox disappeared from the default browser options in Windows settings. No matter what I do, I can't make it appear again and set it as default browser. I want to ask if there's any solution, apart from reinstalling the browser,because I have a lot of data in the browser and I'm afraid backing it up and transferring it won't be convenient.

I've been using Thunderbird for years (decades), and just installed a new version. Using the "cards" display of messages in the inbox, I see that some new messages are kind hidden within the card of another message and want to turn that off. For example, I got a message on 3/30/2025. Then hours later, I see another card for this same message, and it looks identical to the first except that this second card also says "1 reply". I want to get back to the way it always was before, when the reply to the new message would just show up as it's own thing in the inbox, not as something tucked away underneath an older message. Just every message unique and separate on its own. How can this be done in Thunderbird 136.0.1?

Desktop PC running latest Thunderbird and Firefox. Started Thunderbird, instead of the usual tabs opening, it appears to have forgotten my accounts, asks for my email address, i.e. starting from scratch again. Starting Firefox, all previously-open tabs have gone, though bookmarks are all there.

Has there been some update which has wiped or reset Mozilla data? Yes, obviously I can go through setting up Thunderbird again but that will take quite some time and yes, I can use Firefox but many of the tabs I had open were there for a reason and it will take a while to find them all again.

Is there any way that the previous state can be recovered? My laptop has both applications running fine and I have paused Windows updates for a week, just in case the latest update caused this. Thank you.

Since an update 4-5 days ago, Comcast SMTP server does not accept login from Thunderbird. Comcast help page said it was updating and requires a more secure SSL security. Today the Pop3 server does not allow signin either.

How can I select a more secure encryption that will be compatible with comcast.

Thank you.

For two weeks now Thunderbird has been acting screwy. I have posted a request already regarding those issues but haven't received a reply. (multiple postings of emails/deleted messages reappearing in inbox after being 'deleted', disappeared Notifications options in Settings, duplication of sub-folders which reappear when deleted,and so forth). The entire program appears to be corrupted. SO- now I've been attempting to download a fresh version to make make it right again but get an error message I can't open the download replacement/update/ (c first image) (c-images)

Please help. I have urgent need to send files.

Thank you for your prompt assistance. Rob

I bought a new computer and had to download Thunderbird again. I tried the most recent one, didn't like it, so randomly picked a previous release from 2023 (don't remember when I installed the previous one) and hoped for the best. In the past, I would keep some emails in my inbox and tend to them as needed and then keep or delete when I had done what was required. I would also need to go to my ISP email's page, to get spam email, because Thunderbird didn't provide me with those. When there, I would delete what was in the inbox, so I could easily keep letters there to a minimum. Now, however, when I delete something in my ISP's inbox, it deletes in my Thunderbird portal too. I can't find settings in my ISP's page to stop it from downloading automatically (so it won't duplicate what I've already received via Thunderbird), and I can't find any settings in Thunderbird, to ask it to keep what I have in my inbox, instead of deleting everything I delete with my ISP. Do I need to go further back and find an earlier release in order to be able to use Thunderbird as I used to do? Or can I tweak the one I have?

how come when ever i install any antivirus except for windows defender do i get this in Firefox Your browser is being managed by your organization. i went to policies but do not know what to do why can this not be removed from Firefox what do i need to do in policies to get rid of this. here is what i get in policies did not remove any thing this is what i get help please thi is documentation in policies.. Documentation Policy Name 3rdparty Set policies that WebExtensions can access via chrome.storage.managed. AllowedDomainsForApps Define domains allowed to access Google Workspace. AllowFileSelectionDialogs Allow file selection dialogs. AppAutoUpdate Enable or disable automatic application update. AppUpdatePin Prevent Firefox from being updated beyond the specified version. AppUpdateURL Set custom app update URL. Authentication Configure integrated authentication for websites that support it. AutofillAddressEnabled Enable autofill for addresses. AutofillCreditCardEnabled Enable autofill for payment methods. AutoLaunchProtocolsFromOrigins Define a list of external protocols that can be used from listed origins without prompting the user. BackgroundAppUpdate Enable or disable the background updater. BlockAboutAddons Block access to the Add-ons Manager (about:addons). BlockAboutConfig Block access to the about:config page. BlockAboutProfiles Block access to the about:profiles page. BlockAboutSupport Block access to the about:support page. Bookmarks Create bookmarks in the Bookmarks toolbar, Bookmarks menu, or a specified folder inside them. CaptivePortal Enable or disable captive portal support. Certificates Add certificates or use built-in certificates. Containers Set policies related to containers. ContentAnalysis Enable or disable connection to data-loss-prevention agent. Cookies Allow or deny websites to set cookies. DefaultDownloadDirectory Set the default download directory. DisableAccounts Disable account-based services, including sync. DisableAppUpdate Prevent the browser from updating. DisableBuiltinPDFViewer Disable PDF.js, the built-in PDF viewer in Firefox. DisabledCiphers Disable ciphers. DisableDefaultBrowserAgent Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent. DisableDeveloperTools Block access to the developer tools. DisableEncryptedClientHello Disable use of the TLS feature Encrypted Client Hello (ECH). DisableFeedbackCommands Disable commands to send feedback from the Help menu (Submit Feedback and Report Deceptive Site). DisableFirefoxAccounts Disable account-based services, including sync. DisableFirefoxScreenshots Disable the Firefox Screenshots feature. DisableFirefoxStudies Prevent Firefox from running studies. DisableForgetButton Prevent access to the Forget button. DisableFormHistory Don’t remember search and form history. DisableMasterPasswordCreation If true, a Primary Password can’t be created. DisablePasswordReveal Do not allow passwords to be revealed in saved logins. DisablePocket Disable the feature to save webpages to Pocket. DisablePrivateBrowsing Disable Private Browsing. DisableProfileImport Disable the menu command to Import data from another browser. DisableProfileRefresh Disable the Refresh Firefox button in the about:support page. DisableSafeMode Disable the feature to restart in Safe Mode. Note: the Shift key to enter Safe Mode can only be disabled on Windows using Group Policy. DisableSecurityBypass Prevent the user from bypassing certain security warnings. DisableSetDesktopBackground Disable the menu command Set as Desktop Background for images. DisableSystemAddonUpdate Prevent the browser from installing and updating system add-ons. DisableTelemetry Turn off Telemetry. DisableThirdPartyModuleBlocking Prevent the user from blocking third-party modules that get injected into the Firefox process. DisplayBookmarksToolbar Display the Bookmarks Toolbar by default. DisplayMenuBar Display the Menu Bar by default. DNSOverHTTPS Configure DNS over HTTPS. DontCheckDefaultBrowser Disable check for default browser on startup. DownloadDirectory Set and lock the download directory. EnableTrackingProtection Enable or disable Content Blocking and optionally lock it. EncryptedMediaExtensions Enable or disable Encrypted Media Extensions and optionally lock it. ExemptDomainFileTypePairsFromFileTypeDownloadWarnings Disable warnings based on file extension for specific file types on domains. Extensions Install, uninstall or lock extensions. The Install option takes URLs or paths as parameters. The Uninstall and Locked options take extension IDs. ExtensionSettings Manage all aspects of extension installation. ExtensionUpdate Enable or disable automatic extension updates. FirefoxHome Configure Firefox Home. FirefoxSuggest Configure Firefox Suggest. GoToIntranetSiteForSingleWordEntryInAddressBar Force direct intranet site navigation instead of searching when typing single word entries in the address bar. Handlers Configure default application handlers. HardwareAcceleration If false, turn off hardware acceleration. Homepage Set and optionally lock the homepage. HttpAllowlist Origins that will not be upgraded to HTTPS. HttpsOnlyMode Allow HTTPS-Only Mode to be enabled. InstallAddonsPermission Allow certain websites to install add-ons. LegacyProfiles Disable the feature enforcing a separate profile for each installation. LegacySameSiteCookieBehaviorEnabled Enable default legacy SameSite cookie behavior setting. LegacySameSiteCookieBehaviorEnabledForDomainList Revert to legacy SameSite behavior for cookies on specified sites. LocalFileLinks Allow specific websites to link to local files. ManagedBookmarks Configures a list of bookmarks managed by an administrator that cannot be changed by the user. ManualAppUpdateOnly Allow manual updates only and do not notify the user about updates. MicrosoftEntraSSO Allow single sign-on for Microsoft Entra accounts. NetworkPrediction Enable or disable network prediction (DNS prefetching). NewTabPage Enable or disable the New Tab page. NoDefaultBookmarks Disable creation of the default bookmarks bundled with Firefox, and the Smart Bookmarks (Most Visited, Recent Tags). Note: this policy is only effective if used before the first run of the profile. OfferToSaveLogins Enforce the setting to allow Firefox to offer to remember saved logins and passwords. Both true and false values are accepted. OfferToSaveLoginsDefault Set the default value for allowing Firefox to offer to remember saved logins and passwords. Both true and false values are accepted. OverrideFirstRunPage Override the first run page. Set this policy to blank if you want to disable the first run page. OverridePostUpdatePage Override the post-update “What’s New” page. Set this policy to blank if you want to disable the post-update page. PasswordManagerEnabled Enable saving passwords to the password manager. PasswordManagerExceptions Prevent Firefox from saving passwords for specific sites. PDFjs Disable or configure PDF.js, the built-in PDF viewer in Firefox. Permissions Configure permissions for camera, microphone, location, notifications, and autoplay. PictureInPicture Enable or disable Picture-in-Picture. PopupBlocking Allow certain websites to display popups by default. PostQuantumKeyAgreementEnabled Enable post-quantum key agreement for TLS. Preferences Set and lock the value for a subset of preferences. PrimaryPassword Require or prevent using a Primary Password. PrintingEnabled Enable or disable printing. PrivateBrowsingModeAvailability Set availability of private browsing mode. PromptForDownloadLocation Ask where to save files when downloading. Proxy Configure proxy settings. RequestedLocales Set the list of requested locales for the application in order of preference. SanitizeOnShutdown Clear navigation data on shutdown. SearchBar Set the default location of the search bar. The user is still allowed to customize it. SearchEngines Configure search engine settings. This policy is only available on the Extended Support Release (ESR) version. SearchSuggestEnabled Enable or disable search suggestions. SecurityDevices Add or delete PKCS #11 modules. ShowHomeButton Show the home button on the toolbar. SkipTermsOfUse Do not display the Terms of Use and Privacy Notice upon startup. You represent that you accept and have the authority to accept the Terms of Use on behalf of all individuals to whom you provide access to this browser. SSLVersionMax Set the maximum SSL version. SSLVersionMin Set the minimum SSL version. StartDownloadsInTempDirectory Force downloads to start off in a local, temporary location rather than the default download directory. SupportMenu Add a custom support menu item to the help menu. TranslateEnabled Enable or disable webpage translation. UserMessaging Don’t show certain messages to the user. UseSystemPrintDialog Print using the system print dialog. WebsiteFilter Block websites from being visited. See documentation for more details on the format. WindowsSSO and this Certificates ImportEnterpriseRoots true

https://support.mozilla.org/en-US/kb/how-disable-enterprise-roots-preference

Hi. I have followed the instructions on the Mozilla site above however this does not work. The Enterprise Roots keep reloading after a while.

Any idea how to stop this happening?

I have read many articles on this but nothing works. The E Roots will in initially not reload but eventually after a day or three its back.

Many thanks

When I start typing in the URL bar a search engine drop down appears. I do not want that to happen because when I do the URL text moves. I have turned off every search setting that I could find on the settings page, as well as trying various settings in about config.

Every time Thunderbird is launched, a new tab opens with a donation offer. This kind of persistence discourages not only donations, but also the use of Thunderbird. How can I disable this?

"Open message in conversation" is no longer listed when I right click on an e-mail.

So I started investigating. Rebuilding the Global Database was suggested as a solution. So I deleted the "global-messages-db.sqlite" file (66MB), and started TB again.

Now the database starts rebuilding. I follow the status in the Activity Manager. It's stuck at: "Indexing messages Determining which messages to index in Inbox/+ 2023/+ Pantoon/+ Algemeen - Yannig.eu"

So I backup this folder "Algemeen", delete it from TB, and restart TB. Now the Indexer is stuck at the next folder. I once again backup, delete and restart. Now the indexer is stuck at the next folder in the list, and so on.

Any advice on how to break this cycle and get TB do index succesfully?

Hi,

Outlook user here moving to TB. Have exported several large .pst folders + sub-folders using third-party software' into several corresponding .sbd folders.

Success in TB to point individually to each one of the .sbd folders with the Local Directory address, each shows the sub-folders and mail as expected in the Local Folders menu of TB. However, the Local Directory address (Account Settings) seems to allow pointing only to a single folder with properly configured .sbd designation.

If I point to the root folder containing several individual and properly configured .sbd folders, none are recognized.

There is an Add-on called LocalFolders that would seem to solve this problem by allowing as many local folder locations as needed, but it's not compatible with current versions of TB. I wonder if TB will embed a function allowing for more than one local folder address, or having it be smarter in recognizing compatible folders within a single directory location rather than directly pointing at an .sbd folder. Adding new folders to Local Folders is not what is needed in this instance.

Using 2025-04 Cumulative Update Preview for Windows 10 Version 22H2 for x64-based Systems (KB5055612) Firefox 138.0.1 (64-bit) and says it is up todate. I have looked at the about:config to find the browser.tabs.remote.autostart but it does not exist in the list of processes. I have also unchecked in settings both performance options intermitently to try and correct this problem, but nothing happens: (unchecked) Use recommended performance settings Learn more These settings are tailored to your computer’s hardware and operating system. (Unchecked) Use hardware acceleration when available Nothing pops up to allow choosing a different number as many support articles say. I have AdBlocker running as an add on and turned off the duck duck go privacy essentials and still nothing stops these insane amount of processes clogging up my computer. right now, on this page there is only this tab open and there are 13 processes running. Please send real fix instructions- thank you

I have three e-mail account with same provider which had worked fine each sending mail under its e-mail account. Now two of the account receive the message below. The is another user setup on computer. They have two e-mail account and sending works fine Outgoing servers are setup identical for all accounts

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smpt.hughes.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.