Thunderbird Community Forum

I have Thunderbird installed on two Windows machines that I manually keep in sync. I copy my data files and profile back and forth between the two machines as I use each one, and I keep them updated to identical versions. Have been doing this for years with no trouble.

Last time I clicked on "About Thunderbird" on one machine (A) it offered to upgrade from 115.10.1 to 116.0 (auto updates turned off). But the actual update failed and now its offering only to upgrade to 115.14 esr. OK, but now I'm concerned the other machine (B) with the same update prompt (to 116) might not follow the same path, then I have the two versions out of sync and that is a real PITA to fix as I discovered once some years ago.

Why didn't I get the 116 version that was offered in the dialog, and instead switched to esr channel, and how can I be sure the other machine will switch to offering 115.14 esr also so I can keep identical versions? I thought of creating Windows restore point just in case so I can roll back but would rather not risk it.

Some times I get a reply to an email I sent out using my hotmail account and Thunderbird says I have one new message but the message does not show up in my inbox. If I login to my hotmail account through Microsoft it show it in my in box. What is the problem and how do I fix it?

I suppose the best place to start is when/where I think this problem started. Approx three to four weeks ago my thunderbird program stopped downloading emails from my server (Spectrum/RR). I say Approx because the problem sort of sneaked up on me without me realizing it was there.

I was using W7 and my hard drive was pretty much full and I was constantly getting messages that my email could not be downloaded due to lack of space. I started deleting stored emails and emptying the trash, which sort of kept me up and running for the past couple weeks. All this time my Gmail account continued to work as it should, downloading every email that was sent to me, but the Spectrum/RR account was spotty at best.

So today I fired up a new W11 computer for the first time. One of the first programs I installed was Thunderbird. When I attempted to set up an account using Spectrum/RR the process failed. I typed in all of the correct information, Name, Email, and Password but the account will not finalize. Instead, I continue to get the same message that the Configuration, Username or Password is incorrect.

I have since successfully logged into my Spectrum/RR web mail, so I know the username and password I am using is correct. I have also talked with Spectrum Technical support, and they have verified that what I am using to log in is correct.

I hope I didn't ramble on to much and someone can help me !

I'm going to ask this question again. Has anyone seen this? If so, what does it mean? When attaching a pdf or other file to an email, I can't open it to check it before sending.

C:\Users\***\Desktop\*****.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.

What is a helper application and how do I fix this?

Thank you

I've tried restarting and reinstalling Thunderbird but no change in this blockage since Tuesday. I am running Windows 11 Pro and Thunderbird 128.1.0esr (64-bit). Downloading chunks of email from Comcast and trying to import them doesn't work. Please advise as I am stuck. I will check your answers on Comcast server as I can not read them directly.

I'm getting a message the following message each time I try to send an email:

"Sending of the message Failed.

Unable to authenticate to Outgoing server (SMTP) smtp.googlemail.com. Please check the password and verify the "Authentication method" in Account Settings | Outgoing server (SMTP)'.

Under SMTP Server I see the following: Description:Google Mail Server Name: smtp.googlemail.com Port: 465 Connection security: SSL/TLS Authentication method: OAuth2

How can I get my outgoing email working again? It worked yesterday. Thanks, Carla

When I first opened Thunderbird (just a few weeks ago), I noticed that some Calendar Tasks were already set up by Thunderbird. (My standalone calendar is Efficient Reminder).

But I don't see options for REMINDERS - popups (preferably) and/or sounds. (The purpose of a calendar for me is to be reminded to do things.)

I searched for options in Thunderbird, and I looked on the information here, but can't find anything.

If I can I select a sound and/or popup to REMIND me, where can I find the option to set it?

Hello! I recently got the update to Thunderbird 128 on my PopOS laptop via sudo apt update/upgrade. I don't know what the previous version was. Since the update, Thunderbird will spike my CPU to 120 - 140% (per command-line "top") if I have an interaction with it (e.g. reading and then deleting an email that was received) after the program has been sitting idle for several minutes. After a few minutes of loud fans, things calm down again so I presume Thunderbird is doing some sort of maintenance routine that completes successfully.

I do not have the global search index thing turned on. I did not change the default mailbox db idle time. I do have rather large mailboxes that are synced via SMTP, from three different providers. There are dozens of folders (not hundreds) containing thousands if messages (but not tens of thousands). Hopefully that gives an idea of scale .. I don't have a massive overload of untended email history but I do have a quantity of historical emails that the system has to deal with.

I followed the excellent directions online to obtain a profile during one of these high-cpu sessions. It is available at https://share.firefox.dev/4dAmyAz

Please let me know if there is anything further I can do to help diagnose this issue, such as generating more specific profiles. The high-cpu state is a pretty common occurrance now.

Over the past few weeks my emails are constantly freezing up when I open Thunderbird. It hangs up and I have to close the program and then restart, sometimes having to do this several times. It will then be normal for a short while, and start doing it again. I am running Windows 7 on my PC, I have the latest Thunderbird downloaded up until two weeks ago I never had this issue. I have not installed any new software either. I did think maybe it was CCleaner or Advanced Systemcare so I uninstalled those two programs yet the problem is still ongoing. Its quite frustrating and I can't figure out why its happening or what a potential fix for it. Thank you to those who respond.

Hi. When I view the Activity Manager, I see many log entries similar to the following except with different folders: "The current operation on 'Kailah' did not succeed. The mail server for account xxx@gmail.com responded: [NONEXISTENT] Invalid folder: Financial/Venmo/Kailah (Failure)." The folder in question existed a long time ago and has since been deleted. Same for all the other similar messages. The folder(s) was / were originally created in Thunderbird and then deleted after many months. If I create the invalid folder in Gmail, the message no longer logged. I reboot the computer daily and every day these messages appear. I am assuming something is out of sync and Thunderbird believes these folders exist. What can I do to remove these issues. Server type is IMAP Mail Server. Using Thunderbird 115.14.0 (64-bit)

Questions re Email Inbox and Reply window:

1) I can't find a list here showing the Inbox icons and what they mean, specifically this one. I can't delete it, nor do I see anything in the inbox list of column indicators that it might be. I'd like to know what it's for and if/how it can be removed.

2) I want to have more space for the message pane; the only way to do this is to have a smaller font size for the email List pane. I don't see where I can change this. Is it possible to decrease this font size? I've tried but haven't t been able to locate info on this website.)

3) Reply font: I keep changing it to my Preference, but it keeps going back to a default.

Also, find it annoying that I can't select a specific font SIZE. I've never seen a Windows desktop software of ANY kind, not just email, which doesn't give have choice of font size as well as the font itself. Is there a suggestion area on this website?

Thanks.

Yesterday I upgraded to thunderbird 128. I have messages displayed in horizontal layout. Previously each message in the top pane used only one line, and there was minimal space between messages. Now each message requires two lines, with a large gap between messages. This means that I can see fewer than half as many messages at one time as before. How can I change the layout so each message takes up less space in the top pane?

updated from 128 to 129 and now T-Bird is broken. First it opens a second T-Bird apt instead of the original apt. Second the graphics are screwed up as the top tool bars are white with very unreadable faint buttons, so I can not pick and chose , and when replying to an email the header graphics have too much dark which covers the formatting tools and other parts of the header. There are several other problems that I have not found yet as I have only had this update less than 24 hours.

See the screen shot of my broken version 129 of T-Bird. It needs fixing and fixed quickly. How do I revert back to 128 which worked perfectly.

I installed TB version 102 and do not wish to update. Per previous no-updating solutions I found, I have the "Check for updates, but let me choose whether to install them" option tagged, I renamed "updater.exe" to "no-updater.exe," and have the following JSON in my distributions folder:

{

"policies": {
  "DisableAppUpdate": true
}

}

Yet, today, it still automatically updated to version 128. Why?

Should I continue with the above version or somehow install the 128 non-beta version? I've been on the Beta channel for years but some have said it's risky. Your opinion, and if you think I should switch, how do I do it?

82 years young and still tinkering.

I just had to reset my laptop and reinstall Thunderbird (TB). I saved the old profile and now I want to combine the old and new profile on my reinstalled TB. Will my old calendar be moved?