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I am writing to report an issue I’ve been experiencing with your browser. Despite setting the startup option to “Continue where you left off,” my open tabs are not being restored when I reopen the browser.

I have already taken the following steps to troubleshoot the issue:

   Confirmed that “Continue where you left off” is enabled in the settings

   Ensured I am not using incognito/private mode

   Disabled all extensions to rule out conflicts

   Verified that the browser is up to date

   Checked for tab recovery options in history

Even after trying all these measures, the problem persists. I kindly request your assistance in resolving this issue.

Please let me know if you require any system logs or additional information.

Thank you for your support.

After having created a couple of tab groups with some of the numerous tabs that were already open in my browser (Firefox, of course) and then closing and reopening the browser shortly after, no tabs at all reopened even though this is my normal setting for Firefox: open all previous tabs when opening firefox. This setting had always worked before - as it does now with the new tabs. However, all my previous tabs as well as the freshly created groups have vanished. Do you have an explanation and ideally a way of recovering the tabs - or the groups at least? Thank you very much. Kind regards, Kerstin

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My Bookmarks do not not show when I open Firefox. I have enabled Bookmarks under View > Sidebars but they don't show and I have to manually make the visible every time I us Firefox.

I am backing up my Thunderbird (Windows 11) data weekly, and the size is rather large, as I have 19 years of messages (individual folders) in that Local Folder. Is there any way of saving these folders elsewhere so they are not backed up, or perhaps excluding them from backup somehow?

You are great with help, and just recently helped greatly!

Cheers, Jim.

I am trying to set up a subfolder in "Sent" for a gmx account within Thunderbird. I right click on "sent" but there is no "new subfolder" option (see attached image). I also have a gmail account and that does have a "new subfolder" option. Can anyone help?

On Firefox Nightly 140.0a1,

The navigation bar (forward, back, tabs) is gone. I did not change any settings. Clearing cache, reinstalling, switching to the standard Firefox app did not bring it back.

The bar shown in the first photo, on the left

I was searching for the Local Folders in the mail folder of the Profile folder, but it wasn't there, but in TB I can see all the local folders I searched my computer and I found Local Folders folder in a desktop folder. To test I created a new folder in TB and then checked to folder in that desktop folder and it was updated. It seems to work even though its not in the profile directory. I don't know how I moved it and why it works, but I checked the properties page on each Local Folder and they all pointed at the desktop folder. How do I move them back and still have TB see them. I cut and paste one folder back, but TB was still pointing at the desktop forlder

My problem is as described in the subject line: I'm getting multiple instances of Firefox opened when I click links from email or web pages.

This just started happening within the last couple of days. In the past, whenever I opened a link a new window was opened in the already open instance of Firefox. Somehow some setting has been changed (a guess) that has caused a change in behavior.

Firefox is my default browser, but I do keep Chrome open for some testing of HTML/CSS I'm writing. Chrome is NOT my default browser.

I did some searching without finding anything I understood well enough to implement.

I would appreciate any help with this issue as having multiple instances of the app running is driving my octogenarian brain nuts.

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.

After the last couple of Firefox updates, my settings have been automatically changed. This has not happened until recently How can I stop Firefox from changing my settings when it updates? OS is Windows 11. TYIA!

Please tell me how to sync my Thunderbird calendar to pass my appointments to my iPad/iPhone running ios18.1.1. It used to work for iOS 17. I am using the current Thunderbird edition.

It nags me, that I ain't asked if I want the AI function, you just force it over me without giving me any choice, if I want it..

SO, how to COMPLETELY remove the AI function in Firefox and Linux Ubuntu..

AI scare me and I definitely don't want ANY of it!!!