Thunderbird Support Forum

My Thunderbird has been working properly for about 30 years, but now refuses to open. Message received says 'Authentication failed'. This happens repeatedly (for at least 20-30 times) and appears to relate to my password. It suggests 'Retry' or 'Enter new password'. The 'Retry' repeats as before so I check the Saved Passwords and enter the one saved. I get the same message. I am using Version 115 and have been for some time.

Could this be related to a change of Profile? There must be a way to reset the password? I have checked all the settings and no errors appear, all settings confirmed.

I have thought about a Recovery Mode and seem to remember seeing a message that I do have that. I just don't know how to access it.

When I try to open and email link, it immediately starts to download Firefox Installer. It is already downloaded and up-to-date. This has been going on now for almost a year. Please help me.

After last 2 updates several emails were showing up as code. I think I have that stopped. But now 1 email combines with many with to & subject correct, but the from & preview is all the same email from Amazon from 2017.As time goes on, it takes over more emails. My phone email is fine, so this is strictly a Thunderbird issue again.I used sfc/scannow & it said it found problems & they were repaired. Now I see a few more emails look like this. I'm about ready to chuck Thunderbird & go back to Outlook. This has been going on for several weeks with the first issue, the combined emails just started today.

When I'm writing a new email, I receive several copies of it in my inbox without explanation. It's a recent situation and I can't find a solution. Can you help? Thank you. freiroma@sapo.pt

I'm setting up TB for the first time with multiple email and calendar accounts. Some are gmail / google, and others o365.

The primary TB account's calendar doesn't seem to be syncing fully. It's an o365. account. But the email is working.

I added an event on my Outlook for Android on my phone. Its appearing in OWA, and in New Outlook on my computer (so it did sync from mobile Android device to server, and from server to my New Outlook on the Windows desktop). But its not appearing in TB.

Not sure what to check or what the issue might be.

Also, I'd love to replace Outlook Android on my mobile with what I think is K-9. But can't get the same account referenced here to connect to the outbound server.

Welcome any help, and appreciate you all doing this collaborative work.

I have an issue with using newgroups via NNTP server in Thunderbird. News only load during startup of the program. Whenever the option Get Messages is chosen later, or when it is automatically run by the program, the process seems to get stuck in a loading state. In this state neither can new messages be read (the headers seem to be there and are shown, but the body of the message isn't), nor can new messages be sent (message sending gets stuck in status "Assembling Message")

This has been the case for a few releases already, and is currently present on 115.10.0 (64bit)

Has anyone seen a message similar to this when trying to attach a document, usually a pdf to an email?

O:\XXXXXXXXXX.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.

Also, when someone send me an image file, I can't open it directly from the email. I have to download it and then open it. This isn't as big of an issue as the above, but I thought I'd ask it too.

Thank you

Windows 10 Thunderbird 115.10.0

Hello, I am new to Thunderbird and still learning. So I may have missed something setting it up. When I write an email over time it gets saved in my draft folder, but I get multiple copies and when I send it the previous versions remain in my Draft folder. So I end up with email messages, some of which have been sent and some are genuine drafts that I need to finish. If I wanted to keep a different version I'd probably amend the title. So my questions: How do I tell which has been sent and which is still a draft to complete and do I have to delete the old versions myself or ideally can I set it so that when I edit the message and save the new draft it overwrites the previous one? Thanks!

I've been trying out Thunderbird and Spark for the past few weeks, and decided to go with Thunderbird to replace Windows Mail. After uninstalling Spark, I changed all my email passwords, and now Thunderbird can't connect. I deleted my Google and Xfinity email accounts from Thunderbird, then closed and reopened the program, but I'm still getting this error from Google when I fill in the credential info it automatically asks for when re-adding it to my account:

"400. That’s an error.

The server cannot process the request because it is malformed. It should not be retried. That’s all we know."

On the "set up your existing email address" page in Thunderbird, I'm getting this error (see image), even though the copy/pasted password works fine when logging directly into Google.

I also can't reconnect to Xfinity at all. The 3rd party box is checked in their system, but when Thunderbird tries to connect, it looks like it's auto-filling and submitting a password on my behalf, without stopping on that screen so I can change it.

I did this: https://support.mozilla.org/en-US/kb/password-manager-remember-delete-change-tb

And tried all of the suggestions on this post: https://support.mozilla.org/en-US/questions/1434503

What am I missing?

Sending of the message failed. An error occurred while sending mail. The mail server responded: <work@email address>: Sender address rejected: not owned by user personal@email address. Please verify that your email address is correct in your account settings and try again.

This message suddenly coming up after a Thunderbird update, and I cannot send messages from my work email because I don't "own" it. How do I fix this?

TIA.

I used to have an account until my computer died last week. I can not remember my previous password, and I am not sure who to ask. if I did they would send it to my address, which I can not get into. Please help me John Eaton Wright

bold text My Thunderbird 'send' function suddenly stopped working. I have 'webmail' through Spectrum. I can still access webmail directly and send messages from there. I tried resetting my Thunderbird password, but that didn't help.

In my left tool bar I have:

xxxx@cox.net pop server followed by about 40 folders. This was the Cox email that is no longer in use.

xxxx@gmail.com followed by folders

xxxx@cox.net this is the new imap cox.net using yahoo.

Is it possible to move the bottom cox.net to the top, followed by gmail, followed by the no longer in use pop cox.net?

Thanks

I have just set up a new Linux Mint desktop and configured TB for my btinternet email account.

Looking at the address book, all the contacts that have appeared in it, contain "TimeStamp+a series of numbers" before the @ sign of every address.

In the btinternet account contacts, the addresses are as you would expect them to be, without the extra timestamp+number.

Is there a way of getting rid of that, or do I have to edit every address?

Many thanks,

Lee

Your response to: no calendar tab after installing lightning

"Not sure what you installed and why. The Lightning add-on is no more. The calendar has been integrated into Thunderbird since quite a while. There is no need to install an add-on. "

So if Lightning is no longer valid - please remove old references to it!! How do I get the old plain calendar tab on????

Anytime I attempt to send an email in the CCC ONE application, I get this error message from CCC ONE:

"Unable to perform selected action while the email application is open. Please close your email application and try again."

This error message persists whether I do have Thunderbird open or not. I also checked Task manager while I had Thunderbird closed and found no instance of it running. Is there any way that Thunderbird is running in the background? Or could it be if Thunderbird loads at start up that it's tricking CCC into thinking it's open all the time?

I contacted CCC ONE report and they advised me to attempt to change the name of a DLL file so a new one would be created to replace it. I tried that, the issue still persists. They also told me to try and uninstall and reinstall Thunderbird, which I did, and it still won't work.

Any ideas on how to fix this?

• Attached is a photo of the error

A: All these problems started after the new email version was installed, in-other-words, when the old version was updated! B: All of my email that was in my account / on my computer seem to be be there as far as I can tell. I can get to them, I can open them and see their contents. C: All is ok up til this point...as mentioned above and no new email has arrived. D: Now, as soon as I click on the "Get Messages" (Icon, looks like a cloud) in the upper left corner, is when I the Yahoo page of some sort pops on the screen, that's it. No mail arrives and I'm stuck with the Yahoo page covering most of the screen. E: I can click click around and try entering my email address but when I click on F: I see that images can be attached, and hope it works. My screen are,1920 x 1080, so I'll try and reduce the size of the images when I attach them. G: (Image A) After I inter my email address the red wording pops up.

    (Image B)   My email address pops up. That's it. Sometimes, If I click around a second page will pop up and

it becomes vicious circle and normally going back to the first page. (Note: A image) [about:blank] ??? Other pages have an address??? H. In these 4 days I have changed, added, deleted, used my Mozilla Reset Key, and this morning, per Mozilla's - Thunderbird's request, created another Reset key. Still no email. I do believe If this Yahoo thing was gone my email might start, just a guess now. H. Will all of the email that has not arrive still be available?? I. Almost forgot to mention. I receive and send my email through Thunderbird, and Yahoo & AT&T. Thanks, Bob Miller And, "Yes" please email or call, anytime day or night. I am getting a few emails on my phone. miller.485@sbcglobal.net

P.S...."Somethings Wrong"  :-( Again, thanks for your help!