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Yesterday, I noticed after I closed and re-opened Firefox, my browsing session was completely gone - all my tabs and windows, my entire browsing history, website sign-in status, all completely gone. I've been troubleshooting since then.

I've noticed that the 'sessionstore-backups' folder in my profile folder is missing. When I open Firefox, this folder is created and Firefox writes some data to it, but Firefox seems to delete the folder as soon as I quit Firefox. Firefox should not be doing this. My Firefox is configured to open previous windows and tabs, and is NOT configured to wipe any browsing data of any kind when it closes.

As a sanity check, I spun up a Windows Sandbox (briefly, it's a clean, isolated Windows environment) and installed Firefox there. I also enabled the option 'Open previous windows and tabs'. Firefox behaves normally - it re-opens the tabs/windows I had open when I quit Firefox. Great, that's what I expect. The trouble starts as soon as I sign in to sync. After signing in to sync, and letting the initial sync process complete, I open a couple of windows and tabs, then quit Firefox. Firefox begins nuking my browsing session again - the 'sessionstore-backups' folder is erased, and next time I start Firefox, all my windows and tabs are missing, and my browsing history is missing.

So, at this point, I'm assuming something in my synced data has become corrupt. I haven't installed any new extensions lately. I haven't changed any of Firefox's settings that would cause this to happen. The only thing I have done differently lately was enable Firefox Sync in LibreWolf and sign in to sync there. It seems like this session-nuking trouble started after I signed in to sync in LibreWolf. I assumed, since LibreWolf is a fork of Firefox, and because there were no warnings or indications the feature was incomplete/unstable/experimental/etc., that it would just work, that it wouldn't cause any issues. But it seems like it has caused issues. I checked LibreWolf's issues tracker for anything related to 'sync', but I didn't see anything noteworthy.

I've been using Firefox and Sync for numerous years without issue. This session-nuking thing started yesterday.

I use Firefox in a few places, and based on what I saw happen in my Windows Sandbox, this session-nuking issue is going to happen in every Firefox I'm signed in to as soon as it has a chance to sync. Obviously, I do not want this to happen.

What can I do to determine what the issue is? What can I do to check if something in my synced data has become corrupted? What can I do to reverse it? I'm not opposed to completely wiping/resetting my synced data, but I'd rather not if I don't have to. The only thing I would lose sleep over is my bookmarks, but I know I can export them. Are there any debug logs I can enable/look at? Anything I should look for in Event Viewer?

Thanks.

I upgraded my version of Firefox from an ESR version to v129.0.1 on Debian 12. Drag and drop of files from the desktop or the file manager (PCManFM-Qt) into the browser stopped working. It is still working properly in Chrome.

This occurs with several web apps but, as an example, it occurs when trying to drag a jpeg into Roundcube Webmail while composing a message.

No browser console errors are genrated when trying to do this. It occurs in Troubleshooting (safe) mode as well. In apps that pop-up a "Drag files here" target, that target still appears but dropping the file on it does nothing.

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I don't know who at firefox doesn't understand the point of fullscreen, but the address bar continues to pop up when the mouse reaches the top of the screen and there is no setting to turn this off. It is a comically incompetent choice. No, the chrome folder or extensions don't work. Might just switch back to chrome as this is a pattern with firefox's choices.

I installed the latest Thunderbird program and installed successfully on Windows 10 PC. The Inbox emails imported okay but the sent emails, draft and all other folders are not importing from Gmail. Help please !

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Hi

I hope someone can provide me with some advice.

I have used Thunderbird since its birth and have always found it reliable. However the latest release seems to be having problems with moving emails.

Example 1 - I moved an email from my Inbox to a special folder. The email was present in full before the move. Only the header appeared to be copied. I could not undo this and attempting repair on both inbox and other folder failed, as did exit and re-start. The result is that this email is lost.

Example 2 - I went to do a bulk move from the search window (something I have done hundreds of times before without incident). As usual CTRL A, Move to <new folder>, emails greyed out but nothing happens. Exit, return, repeat - same result.

At other times, both these type of operations work fine. But it is unpredictable.

Relatedly, I observe that on start-up the Inbox initially shows as <no messages> and takes several seconds to populate. Also, my auto-filing Rules are also working inconsistently.

These two points, and the two examples, are new issues for me since 128 release. I am using Windows 10 Pro on an HP Envy 17" laptop.

Any suggestions welcome as I am now concerned about losing emails!

Best wishes Roland

Incoming emails go to my "all mail" folder instead of to my "Inbox" on top. When I try to erase any emails, a line goes thru the email, but it does not go to "trash" as they used to. Nothing seems to get them to "trash"; my system is clogged with huge #s of deleted emails; driving me nuts!!! HELP PLEASE!!!! Thanks & Best, Ned Ned Tompkins Realtor Owner Broker Realtor Emeritus status with the National Association of Realtors Outstanding Life Member of the Masters Club 916-812-4NED (4633) cell/text 1folsomflash@gmail.com Over 52+ years (gasp!!) of exemplary brokerage to always grateful and randomly generous buyers and sellers throughout the "Greater Sacramento Area"

I have 10 email accounts in my Thunderbird 115.12.2 (64-bit) and I am using Microsoft Windows 10 Pro and all my sent, draft, archives and templates are going into a different folder. I want them to go into the folder from which the email was sent but they are all going into the email tinakeeling@att.net.

I have changed it to reflect the correct folder but then a few days later and every time I restart Thunderbird the program changes the folders back to tinakeeling@att.net

I have even unchecked the box "place a copy in" and when Thunderbird is restarted it reverts back.

What can I do to fix this issue?

See attached picture of what I am talking about

When I search for anything using "Search Messages" (Ctrl+Shift+F) it takes forever - like up to half an hour!!! Even if the search criteria is "Subject contains" [textstring], or "Date is" [today's date] - which used to take seconds. It seems as if it's stopped indexing my emails.

Any idea how to fix this?

I'm using TB 115.12.2 and Windows 10.

Many thanks

Dave

Hi,

I'm a long-time user and big fan of T-Bird, but I've been having an issue lately that is driving me nuts.

When using T-Bird, the program frequently locks up for maybe 10-30 seconds, especially when deleting messages, transferring messages to folders, and when downloading new messages. This is super frustrating because it's hard to get much done when your critical software is frequently locking up the entire system.

This happens on all three of my PCs (two workstations and a laptop); two are Win 10, one is Win 11, and this problem is not happening with any other software. I've looked at the task manager when it happens and killed any processes that are taking more than a negligible amount of CPU, but that doesn't fix the problem.

It's hard to know exactly where T-Bird is getting hung up without the right profiling tools, but it seems to happen most frequently when accessing the network. At first I thought it might be a disk space issue, but it's still happening on all the machines even after optimizing the disks and deleting the recycle bin, temporary files, etc. to ensure there's plenty of free disk space.

The only thing I've tried that seems to help a little bit is turning off the quick filter.

I've tried asking support at my ISP (InMotion) if the delay might be caused by the mail server, but sadly they are a bunch of worthless idiots.

Any advice or feedback on how we might narrow down or fix this is much appreciated! :)

thanks in advance...

-B

I tried a 2022 sourced help answer result content but it was broken, and that seemed to be the most recent gainful help response connected to my issue, another variant from elsewhere did not work at all, it was probably older still, so I need working code for the most recent version of Firefox Browser, or however recent enough to not so conflict. Much Appreciated.

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