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Thunderbird v115.7.0 (32 bit) Win7 (32 bit) SP1.

I am trying to add another account, but when I fill in the account info (name, email address, and password,) it pops up an oauth2 verification window but the window "Fails to connect"

The title of the window is "Enter Credentials for (email address) on imap.comcast.net.

After some time, I get a "unable to connect" message.

I managed to copy some of the url, here is the beginning part https://oauth.xfinity.com/oauth/authorize?response_type=code&client_id=thunderbird-oauth&redirect_uri=http%3A%2F%2Flocalhost&scope=https%3A%2F%2Femail.comcast.net%2F+profile+openid&code_challenge_method=S256&code_challenge=xhwuKlnA_c...

This has happened before for Google accounts too.

Is there a fix?

Thanks, Mark.

I'm down to the last few days before Outlook will not be usable on Thunderbird unless I jump through some hoops.

I've seen posts about deleting the Outlook account, then reinstalling it in Thunderbird and Thunderbird will create the necessary security steps to make it usable again. This seems to be the method that works rather than just going into the settings and changing the necessary security settings.

MY QUESTION IS: I have lots of emails (sent and received from past months and years) that I keep in folders within Thunderbird.

How can I keep those folders/emails in the format I have if it's necessary to delete the account on Thunderbird then reestablish it? My understanding is that deleting it in Thunderbird will also delete all local folders and email saved within that account.

Thanks B

Earlier I logged in to Firefox to pose a question. Checking email, I had a notice from Mozilla that my account was used to sign in: Firefox on Windows 10 / United States (estimated) / Thursday, Oct 23, 2025.

Does Firefox think I'm using Win 10??? I checked my computer and it verifies that I am running Win 11 with all updates.

Call me confused. Or is this a non-issue? I ask because I'm trying to get into a member website and after I login, it takes me to a page that is for new signers ... not an existing member. Has happened several times.

Thanks,

Ron

Thunderbird updated today to 128.2.3esr and suddenly I have to log in to my Google account, which doesn't work: I get an 404 error when I try to set up my account (which has been working flawlessly for months). I'm on Windows 11.

Using Tbird 115 (or later) can gmail contacts be the listing used in Tbird and be in synch when changes are made in the gmail contacts list. There appear to be various methods and I seek the best and simplest. Thanks

I submitted this as a bug report but I will also submit this here to see if anyone has any information or a solution.

After resetting my password, none of my sync data from before the install is there. Only the sync data from my laptop, but even on my laptop it no longer lists my old computer, it is as if my PC from before the new OS has simply been deleted from the sync logs. In fact, my sync logs only go back to the moment I changed my password. I am not sure how to proceed as it appears that there aren't even any traces of my sync from before this point.

It would be nice if I could get the old tabs I had open on my desktop before I changed my OS, but it's not exactly a "world ending" situation.

I have Thunderbird installed [via Flatpak](https://flathub.org/apps/org.mozilla.Thunderbird) and suddenly it's not recognizing the profile that contains the email accounts. When launching it is showing the welcome wizard instead.

The file system contains quite a few profiles though:

``` $ cd ~/.var/app/org.mozilla.Thunderbird/cache/thunderbird $ du -h --max-depth=1 6.8M ./i58nuv2e.default-release-1 813M ./r77u2ylw.default 6.7M ./w92uxxz8.default-release 0 ./jncleef4.default 6.5M ./fbs6wcvl.default-release 0 ./lz1kt9ot.default 6.9M ./tv1kaebo.default-release 0 ./7f6s4la8.default 839M . ```

but `about:profiles` shows only `tv1kaebo.default-release` and `7f6s4la8.default`.

I'm pretty sure that I didn't do anything but updating the Flatpak and I definitely didn't change any Thunderbird settings or anything in its data directories.

The correct profile is `r77u2ylw.default` (its directory size is 813M while the others are less than 7M).

Hence I'd like to know how can I make Thunderbird use that profile and avoid that issue happening again?

• • PS:** And what's the best way of cleaning up profiles, since I only need one profile anyway? The Thunderbird UI doesn't even recognise all of them, so would be deleting them sufficient?

Unable to sign into outlook.com using either normal password or OAuth2. This has been going on for weeks, but would eventually connect. Now it was been two days since last connection. Any help would be appreciated.

Thanks Glen

Hello!

Everytime I open Thunderbird it asks me to authenticate an old mail account that 1) has already been deleted and 2) isn't visible anywhere within Thunderbird - so I since I don't even see the old account anymore, I can't delete it and don't know what to do. I have deleted the SMTP server that was related to the deleted mail account. I also uninstalled and reinstalled Thunderbird - the message still shows up.

I hope someone will be able to help me. :) Thank you!

I would like to make a donation that renews automatically each year. I understand that you offer the option of making monthly donations. However, that is not what I am looking for, and I would never use that option. By contrast, if I could make a donation that renews automatically on the same date every year, I would choose that option. I am not suggesting that the amount would be substantial, but it would be comparable to what I would be willing to pay for an annual subscription.

(If I have not submitted this suggestion through the appropriate channel, could you please let me know how it might be brought to the attention of the individuals responsible for making such decisions?)

I'm using thunderbird for gmail account, and I struggle to mark some events notification as completed when they are deleted using gmail interface. They keep on poping up but when I hit `Dismiss` it gives me this error: ``` Status Code: 2147500037, The request cannot be processed.

Server Replied with 400 If you're seeing this message after snoozing or dismissing a reminder and this is for a calendar you do not want to add or edit events for, you can mark this calendar as read-only to avoid such experience in future. To do so, get to the calendar properties by right-clicking on this calendar in the list in the calendar or task view. ```

I don't want to make my calendar read-only because I'm still gonna use it but I can't remove these annoying pop-ups because of the error. Please help what can I do

I asked a question, received an email confirmation. I've spent 10 minutes trying to find said question in my profile. NOTHING! ANYWHERE! If your instructions are useless how are your claims of competence as a browser any different? Why is use, or even the simple attempt to use your well touted product so bloody frustrating?

I have 3 e-mail accounts and the third one I added is the one I set as default. For some reason the first two show together in the unified folder, but the third is separate on it's own. How do I get all three in the unified folder?

I am trying to convert from Chrome to Firefox. Everything is going well with my main account, but on my school account, I can't receive emails from out of my school district. Is there any way that I can make an account without email verification?

I have a problem with my primary email. I cannot send out or receive. I'm working with my provider but no resolution as of yet. They did check my settings at the provider level but said everything looks good. I've thoroughly checked and rechecked all my email settings and am unable to see a problem. I'm thinking that since I am not signed into my browser (Mozilla Firefox) with it telling me my account is disconnected that I need to Sync my account, but I cannot do that.

So, I have been trying to Sync my Mozilla account but being I have a problem with email I am unable to receive your email code to completely sign into my Mozilla account. What I am wanting to do is to sign into my account and add a secondary email address so to receive your sign in code so that I am able to finish syncing my account.

I am lost to know what to do from here! You will be unable to reply to me using my regular primary email address because as I say, I cannot send or receive, so how can you even help me? Please help me somehow! I'm sure you have my phone number being I would think it's on my account. Can you phone me? Hopefully! Not sure whether I should put a phone number or the added secondary email address in here so you can add it for me. I can't sign into Mozilla to do anything. I went through my Google account to get this far so to hopefully send this to you. Your help would surely be appreciated! I'm desperate- here it is - Email hidden for privacy - you can contact me through that. Please help!!! Thank you!

I periodically backup my Thunderbird AppData information: C:/Users/<me>/AppData/Roaming/Thunderbird

I believe I installed Thunderbird from the MS Store.

On one device (MS Surface Go, Windows 11), this directory does not seem to exist. I have hidden folders visible, and several folders show up under AppData\Roaming, but not Thunderbird. I tried using %APPDATA%\Thunderbird, which works on my other devices, but the result is "not found".

I created a local folder ("save") and then used "properties" to display its location:

mailbox///C:/Users/<me>/AppData/Roaming/Thunderbird/Profiles/pv771buo.default-release/Mail/Local Folders/Save

When I put this into the file explorer and hit return I get told there is no app to open this 'mailbox' link, and I should look for one on the MS store. When I remove the mailbox/// it gives me the "not found" dialog.

I used the help->troubleshooting dialog to "Open Folder" under the Profile Folder entry, and got a "Location is not available" dialog. The dialog cited the same folder path as given above.

Where is the Thunderbird App Data stored? How do I access it????

I have a folder with the sbd extension copied to a pendrive.

I placed it in the location: C:\Users\............\AppData\Roaming\Thunderbird\Profiles\..........\Mail\Local Folders. However, when I opened Thunderbird, it did not add itself to the local folders

Do I need to force synchronization in some way?

PF