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I use Thunderbird on multiple computers, sharing an NAS. One is Windows 10, one is Linux Mint. Both have Thunderbird 153.3.1esr installed. The email Profile and email file storage is on the NAS. The "home" folders on both machines have a profile.ini file that points to that shared profile. This worked fine for many years.

For perhaps 6 months i've only accessed email from Windows. Now i'm trying again to access from LinuxMint. It no longer works.

From Linux, at startup, Thunderbird complains that i'm trying to open my profile from "an older version of Thunderbird". A popup dialog claims "A newer version of Thunderbird may have made changes to your profile which are no longer compatible with this older version. " It offers to create a new profile.

First, the same version last edited the profile as is reading it. Second, i don't want to create a new profile, as the existing one has multiple email accounts at multiple domains, with multiple sigatures, and custom storage paths, etc. I tried profile manager, but it just takes me back to this dialog.

How do i get Thunderbird to use my existing shared email storage ?

Hi, I've three Browser profile, when I get new updates, no matter I at that moment be in which one of them but the update just reach one of the profiles. features like Built it VPN, weather widget and etc does not come to the others two. Please fix this one or if its a problem from me, guide me to fix it.

Every time there is an update, Firefox creates a new profile and hides all passwords etc. It is therefore impossible to work with it now. With 157 I now have a worthless Firefox, because all links, passwords, settings etc have been cleared and a new profile has been created.

Title. Whenever I click the profile button on just this profile, it doesn't give me the option to switch to different profiles. This problem doesn't exist on my other profiles.

Hi, hoping someone could help as I am struggling to get my information back. I am using Ubuntu Cinnamon.

Thunderbird crashed last night, wouldn't work, tried safe mode. Nothing fixed it. It hung when opening up and after 30 seconds said force quit. So I was forced to reinstall. I did a manual backup but not using the inbuilt tool as I couldn't get into Thunderbird. I just copied the data from username/.thunderbird

After spending a long time uninstalling. Because it reached 78% and then crashed on uninstall. Eventually after reading various pages on the internet I managed to reinstall from the Ubuntu software manager using the latest snap version. (Which I am not sure was what was actually installed previously).

However having used thunderbird for nearly 20 years or so. I have a username/.thunderbird folder. And when I moved to this platform, I have a snap/thunderbird/common/.thunderbird folder.

I installed this new distro 2 years ago, and remember having issues getting my data into the system under Snap. But eventually got it to work somehow back then.

However since reinstalling I cannot see the last 2 years of emails, archives or data. It has launched into a 2 year old profile. I appear to have lost most of the emails from the archive folders (but kept the folders) removed all of the personal folders but then dumped all those emails into my inbox. Giving me 6500 emails that were in various personal folders. (I don't get 6500 emails in a year so don't know what has happened.) It has even changed all of the new dates to the US format, so nothing makes any sense.

I now have 2 Thunderbird profiles, over 12GB in size. And have apparently lost 2 years of my life. But reading support pages, suggests I should be okay because thunderbird doesn't delete data when you reinstall?

I have looked through various other threads which talk about pointing it at the profiles and mail boxes, however nothing works.

Any help much needed.

I upgraded Firefox on one of my computers and I cannot get my original profile back --- I want Fire fox my way not the way you think I want it -- How do I get my original profile back

I've read that I can create several Thunderbird profiles and load my desired Profile to startup and use the Profile Manager to switch profiles. I'm guessing that I can only load one profile into Thunderbird at a time (?).

And if I wanted to check emails from another profile I'd have to close or switch or somehow unload the current profile(?).

It would seem to me if it were possible to load more than one profile at a time, then if two profiles had the exact same mailbox account, it would cause problems(?).

Appreciate any input from those with experience in this.

For some reason, on my main PC (Windows 10) the icons for different profiles are not displayed over taskbar Firefox icons, while on my laptop (W11) it's properly displayed. Previously I've used Brave with multiple profiles and profile icons were properly showing on taskbar.

I'm not sure if it's related to system version or some settings, I would greatly appreciate any help as this makes it hard to work with multiple profiles open at the same time.

On the topic of profiles, I would like to suggest two handy changes: 1. separating windows on taskbar by profile would be helpful, like in Brave, where all profiles are not glued together as single row of icons on taskbar. 2. Changing browser icon by profile (the fox icon that can be changed in Appearance settings), they more larger and easier to differentiate, especially as profile icons are all white.

I have followed the instructions to txfer the profile to new PC W.11 - from W.10. T'bird says: "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible."

I have the old folder from 'roaming' pasted in correctly - did it twice. No change.

I also have all my message folder ready on the new PC. These are held in a better location for bak up. When I moved to the last machine - nine years ago - I had exactly the same problem!

As new install will not load the profile I cannot get into it to tell it anything.

Suggestions welcome. SCA

Hello,

I need clear instructions for completely disabling/removing Firefox's local profile system from my Firefox installation.

I want to use my Mozilla account only, without having separate Firefox profiles such as “Adina” or “Profile 1”. I do not want Firefox to create, display, or require local profiles, profile selectors, or profile-specific icons.

My current situation is:

• Firefox has created two profiles: “Adina” and “Profile 1”.
• My Mozilla account is the account I want to use.
• I want my Firefox data to remain associated with my Mozilla account.
• I do NOT want to manage separate local Firefox profiles.
• I want Firefox to behave as a single browser connected to my Mozilla account, without the new profile system.

Please tell me exactly how to disable the profile system completely, if this is possible in the current Firefox version. If it is not possible, please explain why and whether there is an official setting or supported configuration that makes Firefox use only my Mozilla account without these additional profiles.

Please do not just tell me how to switch between profiles or set one profile as default. I specifically want to disable/remove the profile system itself.

Thank you.

Hello, I urgently need help recovering emails and archive folders that have disappeared from Thunderbird.

Here is what happened: I had an email account configured in Thunderbird using POP3. Over the years, all the emails and the entire email history were downloaded and stored locally in Thunderbird. I also had several archive folders containing important emails and documents.

The mailbox was recently moved from the old mail server to a new mail server using IMAP. The account was then set up again in Thunderbird as a new IMAP account.

The old POP3 account/configuration was left untouched, because I expected the old emails and folders stored locally in Thunderbird to remain available.

However, after setting up the new IMAP account, I can no longer see the previous email history or the archive folders from the old POP3 account. Some of these folders contain very important documents that I need to recover.

I would like to emphasize that I am not asking to recover emails from the old mail server. The emails and archives had previously been downloaded and stored locally in Thunderbird through the POP3 configuration.

Could you please help me determine, how I can locate and restore the old Thunderbird profile or Local Folders? The emails and archive folders are very important, so I would really appreciate detailed instructions on how to safely recover them. I have not intentionally deleted the old emails or archive folders.

Technical information: Email address: biuro@wojciechprzybylski.pl Old mail server: server.go4win.pl Old account type: POP3 Approximate date of the migration: 15.09,2026 Missing folders/emails: Archiwum

Thank you very much for your help.

Best regards, Halina Kaczyńska

In "choose a profile" I have two profile and they have the same avatar. I would like to change one of the in order to differentiate them. I tried using edit but do not get a choice of avatars as I saw in a help article. What can I do?

Thank you for your help!

Rick

When I try to open a link to an app or program from my Outlook account I get two tabs trying to open the same page. Big load time error. I believe this may be due to having two Mozilla/Firefox accounts and both are trying to open that link. I need to learn how to close one account to keep one open and able to access excess links. I'm open to any reasonable solution that leave me with my history and account info.

Never could Install TBird 152 ... Found Out that Profile Bugs started with Tbird 138... Loaded Tbird 135 To Avoid Profile Bugs... Now I am getting a Strange Error Message ... Now I am getting a strange Nuisance Prompt Says I need to Create New Profile .

I had two profiles set up in Firefox that are not showing up now after restarting my computer. One I have been using for YEARS. I have hundreds of bookmarked pages and saved passwords that I cannot access now. I also have a second business account that is not showing up anywhere and I need for an extremely important meeting in a half hour. This is disastrous and I do not understand why your browser did this.

My bank had me reinstall firefox. NOW I keep getting messages to create a new user because it shows I have previously logged in on a more recent version. I had used a version of 60 something and now I have something in the 40's (140.16.0 .Windows 11) I really hesitate to change users because I do not have a clear picture of what I will lose. Like bookmarks and saved stuff.

I would like to just stop the messages.