Gach Táirge Community Forum

Hi, I'm running FF 149.0 (64-bit) on Windows 11. I've used profiles for a while now and on several occassions I've "lost profiles". Currently I have three profiles which I set up and edited the icon and colour associated with each. When I launch FF I see the Profile Manager and can select any of the three and I can create a new profile which shows here. However, once in any one of the FF profiles I don't see the others - by which I mean that when I go via the hamburger lines top right and click on the current profile, the 'other profiles' section is blank. I also cannot edit the profile from using the edit pencil top right (after clicking the hamburger lines and clicking on the current profile), it takes me to about:editprofile but the page is completely blank. Confusingly, if I go to about:profiles I see two profiles, neither of which shows up in the Profile Manager! I'm going round in circles trying to understand where to edit my exisitng profiles and make sense of the five profiles that don't all show up in the same place!

Believe my T-bird account has somehow been corrupted. Takes forever to load on PC and always puts new emails in Trash folder. Often does not accept correct password. If I save / backup PROFILE, uninstall T-Bird and delete any Thunderbird folders on PC, if I restore per backup, will I be restoring the corrupted app. Don't want to loose email addresses, thousands of emails and email folder structure. Will a restore work? Thank you. Greg D

PS Version of T-Bird on laptop still puts all new email in Trash, but loads much more quickly, etc.

I have moved my Thunderbird data from drive C:\xxx\Thunderbird to N:\xxx\Thunderbird. The Thunderbird program remains on "C:\Program Files\Mozilla Thunderbird" How do I tell Thunderbird to find its data on the N: drive?

     Thank you,    Art Lieberman

Hi, I am hoping that the community can help me find an answer to this. I have two computers that I use for work. The one in the office has TB running all the time and before I leave for the weekend/vacation I would close TB, copy the profile folder to a USB (or copy it to cloud) and then paste the profile folder on my work laptop (at home). While all the settings get copied (local folders structure, addons etc.) as I use IMAP, it downloads all the mail on the new system regardless. I thought that it should have the latest mail downloaded as part of the profile folder, is that not the case? The bigger issue is that none of the Completed Tasks Lists, Templates, etc. get updated. It still shows all the older stuff on the work laptop and no updates carry over from the PC (at work). Going through the profile folder I see multiple copies of the files prefs.js, folderCache.json, global-messages-db.sqlite appended as: prefs-computername.js and folderCache-computername.json etc. (The computername is the name of the PC - office/laptop) The profile name is the same between the two computers. TB is only started after the profile is copied locally. TB version is the same between systems. I am left scratching my head why somethings are copied but not others. Hoping that the community can help me here. Thanks!

Hi, So I used Thunderbird to create a zipped backup file of my profile. I got the warning that if the file size if more than 2 GB I may want to make a manual backup. I proceeded, and ended up with a file that was 15 GB. I then uninstalled Thunderbird, reinstalled it, and tried to import my backup file. Thunderbird gave an error, saying the file is too large, and I should manually extract it. Okay, I tried, but Windows 11 failed to extract the file. I then used a third-party app to extract the files. This gave me a c2140ucr.default folder that contained three direct subfolders and many, many files. I located my inbox.ca file, which is what I really want, but I cannot find a way to import it into Thunderbird using the Tools menu. Any ideas on how to recover my previous profile would be appreciated. Thanks.

Hi, I have been running low on hard disk space due to the bloated Windows 11. I have been trying to clean up Thunderbird by deleting a bunch of saved emails and compacting, but the size of my profile folder is still about 3.5 GB. I looked at all of the subfolders under my profile and found a bunch of what I think is dead storage.

Under the MAIL folder there are 4 folders for what looks like my current Local Folders and 3 older local folders. Under the IMAPMAIL folder there are 4 folders for what looks like my 2 current email addresses and 2 older unused email addresses.

I looked under the account settings for the Local Folders and the 2 email addresses and have identified the 3 out of the 8 folders that are still being used.

So my question is, is it safe to just delete these apparently unused folders?

Just this week I found it was impossible to get to firefox browsing until I chose an upsetting blob as my profile. Is there anyway to skip this step or at least to change that blob to something that makes a more pleasant experience?

My version of Firefox wont save History, Bookmarks or Downloads. I've made sure the privacy settings are correct and have tried reinstalling Firefox several times. It also wont let me drag a link from the address bar to the bookmark bar anymore like it used to. Any help with this would be much appreciated... Thanks!

I'm having a connectivity issues. Did some searching which directed me to the Appdata Profiles folder. When looking inside I see Mail and ImapMail. Both have numerous folders inside. Too may I believe. Based upon the screen prints of the folder's contents, do you see conflicts?

I have three email addresses with Outlook.com.

Pop.windstream I have not used in many years. Not sure what others I could possible delete.

Thanks.

I am not a native English speaker, so I used translation. Please excuse any awkward phrasing. I previously updated my Firefox to version 150, but my tabs kept crashing roughly every 5 minutes. To solve this, I tried installing the Firefox ESR version. However, my profile had already been upgraded to the new version format, so ESR could not read my data. I then reinstalled version 150, but now I'm having profile issues again. I can access and launch my old profile through about:profiles, but I can't seem to save it directly as the default profile. I don't want to have to repeat this process every time I restart the browser. Is there a way to transfer all my data (bookmarks, saved passwords, add-ons, settings, etc.) to a new profile that works with the current version? Or, can I downgrade my profile so that ESR can read it? I have tried copying the files from %APPDATA%\Mozilla\Firefox\Profiles, but it didn't work after many attempts. Please help me. I really don't want to set everything up from scratch again. Thank you!

Hello everyone,

I’ve been using Firefox for 5 years now and I absolutely love it. I recently bought a new laptop, but I’ve run into an issue. On my old laptop, I was able to use multiple Firefox profiles at the same time—similar to how Chrome handles profiles.

On the old setup, when I clicked the three-line (menu) button, I could see my second profile there and switch between profiles with just one click. After installing Firefox on my new laptop, I can’t find that option anymore.

I know some of you might suggest using about:profiles to switch profiles. Yes, I’m aware of that method, but I find it inconvenient because I’d have to type about:profiles every time, which is a bit of a time waste for me. I really want the same quick-switch option I had before.

How can I get that functionality back? Any help or suggestions would be greatly appreciated!

I’m already using the latest version (142.0.1, 64-bit).

Thanks

I've used thunderbird for years. Now I can't get it back. I tried a clean uninstall/reinstall. Downloaded from the thunderbird site. Seems to install fine, but then says no profile recognized. I put some old profiles in the appdata\roaming\thunderbird\profiles in desperation, but still no luck. My clean uninstall did involve registry entries (Revo-Uninstall). So I'd like to get a clean start with Thunderbird, but it won't let me. Any suggestions greatly appreciated. I dread the idea of using another email after all these years!

Hi, I have moved to a new computer and transferred my Thunderbird account to it without any problems. However, I wanted to do a backup of my profiles, etc, but the old Thunderbird backup link no longer works. Has it been discontinued, and if so, what replaces it?

First, I have very limited understanding of software. I need very simple explanations.

Here's my issue. I use Thunderbird on my desktop computer. I have used the Import/Export > Options > Backup Scheduling function to backup my Thunderbird email to my USB/flash drive. I have labelled the backup folder on my flash drive "Thunderbird email backup." That folder contains numerous subfolders including: 1) calendar-data 2) chrome_debugger_profile 3) crashes 4) datareporting 5) extensions 6) ExternalMailFolders 7) Mail 8) minidumps 9) saved-telemetry-pings 10) scheduled-notifications 11) settings 12) shader-cache 13) storage.

Again, these are the subfolders created/named by the Thunderbird Import/Export backup. I HAVE NO IDEA WHAT THESE FOLDERS MEAN.

Here's what I want - it's actually very simple. I want to be able to see (read) my backed up email on my flash drive without using the Thunderbird installed on my computer. I want complete interaction with the backed up email without my desktop Thunderbird - or my online email account - being involved at all.

My understanding is that Thunderbird Portable is supposed to be able to allow me to do that. I downloaded Thunderbird Portable (from https://portableapps.com) to my flash drive but when I tried to access it the first thing it did was try to force me to put in my online account (POP?) information.

I don't want to do that. I just want to open Thunderbird Portable on the flash drive and have it realize that all of my backed up Thunderbird email information is right there in the same flash drive. I want it to just access and use what's right there.

I was really hoping that Thunderbird Portable would simply ask me where to look - in a very user-friendly way! - and I could tell it to go to my "Thunderbird email backup" folder on my flash drive (WHERE ALL MY THUNDERBIRD INFO IS!) and it would simply do just that and provide me with complete Thunderbird service for the backed up email.

Am I missing something? Can someone give me a VERY SIMPLE walk through to do what I would think should be a very simple thing? Thank you. Chris (6/29/26)

PS - I've read the Mozilla Support ARTICLE: Thunderbird Portable (Mozilla Thunderbird, Portable Edition) and other portable apps as alternatives (https://support.mozilla.org/en-US/questions/1285834) and it alludes in general terms to exactly what I want to do but it does not give any step-wise instructions.

This afternoon, I clicked on a link from an email and for the first time got a choose a profile pop-up. I do not want this; I have read info on Mozilla and elsewhere about its purpose but it doesn't say how to just stop the pop-up - there should be an option just stop the pop-up because I don;t want to have to choose amongst options. I have started copy-pasting the links in emails and going to Chrome and will seriously have to reconsider using Firefox of this continues. I don't want to have to type about:config or anything - this should have been an opt out or opt in thing and I want out. Thank you for your help.

No matter what I've tried, I cannot figure out a way to edit or delete the profile from the new profile manager. Both about:editprofile and about:deleteprofile show up as a blank page (with how it looks on my normal profile for comparison). I have tried deleting the folder multiple times, but the icon still shows up in the manager and clicking it just creates a new profile with the default settings. It also does not appear when using firefox.exe -p. I had previously been using the about:profiles to manage my profiles and wanted to see if I liked the new version (I didn't), hence why I was using it in the first place.) I'm currently using Firefox version 149.0 and Windows 11 on the latest version. I have found no solution that gets rid of it. I would also be fine getting rid of the profile manager UI so it stops bothering me.

I made the mistake to following Mozilla's advice on why my tabs stopped coming back after I closed out, despite the fact that I had that selected in my settings. Now I'm stuck with an "Old Firefox Data" folder on my desktop and I can't remove it because I need administrator privileges -- but it's my personal PC. WTF

Hi everyone,

My antivirus as quarantined 2 files from my TB profile:

• d:\internet profiles\thunderbird\profiles\z3rq1w7t.default\prefs.js
• d:\internet profiles\thunderbird\profiles\z3rq1w7t.default\virtualfolders.dat

I asked the antivirus to restore them, but the damage is done. TB has lost track of everything I’d stored over the years, including my email accounts, emails, preferences, etc. It’s like a fresh install.

But I can see that my profile still contains about 5 bg of data. So everything’s there, but it seems it no longer knows how to access it.

As you can see, my profile isn’t buried in the depths of Windows; it’s on my D drive. Perhaps I just need to ‘reconnect’ TB to the correct profile, but I don’t know how to do that anymore…

Any help would be greatly appreciated.

Thanks in advance. Guy