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I am experiencing a persistent "ghosting" issue where deleted messages reappear in the "All Mail" folder. Environment: Mac Mini M2, macOS 15.2, Thunderbird 140.7ESR. Configuration: Gmail IMAP with "Auto-Expunge OFF" and "Immediately delete the message forever" selected in Gmail Web settings. Behavior: Using Shift+Delete or emptying the Trash in Thunderbird appears to work locally, but upon restart/re-index, messages return to the "All Mail" folder. Even after 2+ days, a search on the Gmail web interface still reveals the "deleted" items. Issue: The EXPUNGE command does not seem to be successfully committing to the Gmail server in this specific version build. Note that the TB has gone through some major rebuilds from 140.6 back to 128 ESR to 140.7ESR in the period from early Jan till 2 weeks ago. Very recently, TB became once again very slow on a start up, including after rebuilding of the large All Mail file of 66K items. A month ago, I added Satechi with 2TB drive split evenly between Time Machine and Other data. Significant oscillations took place in free memory on the MacHD between 60BG and 10 GB, currently at 58GB. Safari is my browser.

Hello,

I am running windows 10, firefox 148.0.2 (64-bit) and when signing onto amazon.com I am greeted by this annoying pop up. Screenshot attached,

"Windows Security Making sure it's you

Please sing in to amazon.com This request comes from Firefox, published by Mozilla Corporation"

I do not find a need for this pop up and would like to know how to disable it. If you know how, please let me know!

Whatever changes were implemented around start of March 2026 have made bookmarks almost completely unusable for me on Firefox Android. I have a set of bookmarks shared between my phone and my synced desktops, and they're all in folders within the Bookmarks Menu folder under bookmarks.

Since the change I mentioned, when I go to edit the folder a mobile webpage bookmark is in, it shows me the bookmark details, and when I click to change the folder, it shows me the Bookmarks Menu folder and the Bookmarks Toolbar folder and one other folder. Normally at this point I would expand the Bookmarks menu folder to see the subfolders and select one. But after I click on Bookmarks Menu it takes many minutes to expand (I don't know how long; I needed to do other things so I went away and came back to it) and many minutes to expand any lower layers in the hierarchy.

This is completely unacceptable. If you offer a bookmarks service, it should be possible to expand the folders of bookmarks within 3 seconds. It is completely impractical for it to take multiple minutes to expand each folder level, especially since Firefox always collapses all the folders before the next time I try to edit a bookmark folder.

Please fix this ASAP!!

каждый раз когда я закрываю все в кладки в firefox после того как я захожу в браузер снова у меня открываеться сайт яндекса и поиск ведеться только через яндекс пока я не выберу снова google, как решить эту проблему?

Firefox is CONSTANTLY crashing now and I'm about ready to switch to another browser unless someone can give me a reason to stay.

Moderator note: This question has been edited to clarify OS version (based on crash reports).

I would like to know how I can control the timing of compacting the mailboxes under Linux and Windows. The reason why I ask is that every time compacting needs to be done, the prompt to do so comes up as soon as the Thunderbird interface finishes loading but before all of the mailboxes are finished updating,which can take several minutes. If I accept the compacting, it inevitably returns an error that it could not run because the mailboxes are still updating. Or I can cancel until I go through this the next time.

It would seem like a simple matter to either give the user a way to delay the compacting process, or have Thunderbird not initiate it until it is safe to do so to begin with.

I have tried to research this but have not found any answers.

Hello,

I have a situation - which I had previously researched and resolved - that has come back to haunt me.

I use an ultra-widescreen monitor and searching/browsing obviously necessitates a center-screen search box which, up until now, Firefox has provided cleanly and with simplicity. However, I see that (once again) despite cursor placement in the center-screen box the search text is being entered in the address bar which is wholly impractical for me since I have to look about 60 degrees left and upwards to see what I am typing.

I say "again" because when this happened previously I was able to make a config change and resolve it but despite that still being in effect - the ".handoffToAwesomebar" is still set to FALSE - search text now has moved back to the address bar.

A brief search of this community yielded no answers. Is there any other known fix or has this now be thrust upon us permanently and thou shalt adapt?

Thanks in advance....

You say to go to the download page and my version of Windows will be detected & you'll give me the correct version. However, IE 8 in Windows 7 won't go to your download page. So, I need to download from another computer and copy the file to the Windows 7 computer. This doesn't work when you detect that the computer doing the download is a newer computer. How do I tell your system to give me the Windows 7 installer?

FF is offering up possible login names for a particular site I have used previously even though I have removed all related browsing history, form data, and cookies (and cleared the cache). What am I missing? Is it using stored history for unrelated sites to guess at a user name, or is there some other hidden history I need to clear?

Three days ago a window popped up asking me to update Firefox. I did and afterwards my personal bookmarks listing disappeared. I tried rebooting everything. No luck. I went to your website and followed all of your suggestions, but again nothing worked; mainly because I could not find on my computer the info the last step in your suggestions were asking for. (I did get a message several times telling me I was using an old Firefox profile. I tried to investigate, but each time your instructions told me to look for something as the last or next-to-last step, I ended not being able to find it on my computer. Again, I have tried everything. Please help me.

Firefox will only start if I sign in as an administrator. It doesn't connect to the internet, and I can't get to the help screen. I did a refresh but that hasn't help. If I uninstall and then reinstall a new copy correct the problem? How do I save and reinstall my bookmarks and settings? I love Firefox and prefer it over other browsers. But I need to fix it and any help you provide will be very much appreciated. Thank you!

Thunderbird import not allowing to "match names" on import from a CSV file.

Yes this is the problem when working with Thunderbird’s import of a CSV file, the Match field names option only is allowed on the first attempt. That told me that the source fields and first Record columns did not have useful fields to even try to Match field names. So I went and edited the CSV file to try to get at the Match Field names option but it was not available no matter what I fix or tried. So to me the problem is with Thunderbird’s “ surmising that since I was given the Match field Names screen that I Thunderbird never gives the Match Field names on subsequent attempt. Thunderbird needs to give the Match field Names screen as an option on every attempt not just the 1st attempt.

The below screen was given to me by one of the consultant’s attempt. And you can see that he had a CSV file with the THUNDERBIRD’s preferred CSV options!!! And it did use the Match Fields Option.

Attached screenshots is not possible at this time.

I started using a new laptop and when I receive emails through Outlook, the excel attachments won't open and I get a message saying that I don't have the pdf software. These are Excell files, not PDF. I've tried all the suggestions on-line but they still won't download as Excel files, only Firefox files.

The size of the slider is so tiny, it is extremely difficult to see let alone manipulate. Is there a setting which would allow a user to make them much wider, thereby easier to see and manipulate? Thanks

The five Firefox relay have not been used by me; can I create new ones. I don't use shopify or pinterest. It looks like they were set up in 2024. Can I receive 5 more to clean these out. Thanks.