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I am unable to access my emails in Thunderbird. Thunderbird opened but does not respond as there appear to be some files /emails that it could not accessed.

I tried deleting the Parent.lock file. I then deleted Thunderbird and re-installed it.

On opening the updated instance, it comes up with the same couple of files/emails in the list. With the same ones seemingly trying to be loaded. See attachment. The files are Invoice 03-10-20 and Ticket_1.pdf

Downloaded Thunderbird update and program now opens to Xfinity but no updated emails... Can I remove and re-install it without losing all my previous emails and contacts? Or is there any better fix?

• NOTE* It's Version 158.0...

TB is hanging on startup as it cannot connect to an IMAP server (Ping times out) I am chasing this separately. If I click on the TB window it grays out and I have to shut TB. I know which account is causing the problem but how can I start TB WITHOUT it trying to access servers so I can delete the problem account?? Thanks in advance. Paul N

What do I do about this warning I am receiving when I refresh my inbox? "The certificate for pop.windstream.net is not valid. Someone could be trying to impersonate the server and you should not continue"

   Unable to receive new messages on my Thunderbird inbox for this warning

Since yesterdayevening I am experiencing problems with connecting to imap.one.com with all four of my accounts in Thunderbird 157.0.1 (64-bits). It says something like "Connecting to the server at imap.one.com with username XX@XX.XX failed" (translated to English) Mailsystem at one.com (webmail) and in my Android (Bluemail-app) works fine. I tried to fill in the right passwords, even changed a password and tried the new one, but still no effect.

Settings: Servertype: POP-mailserver Servername: imap.one.com Port: 995 Username: emailadress

Connectionsecurity SSL/TLS Authenticationmetod: Normal password

I use the release-update-channel (if that is usefull info?)

What can be wrong?

When I send an email with my HTML file signature Thunderbird appends a text signature as well. The text signature is not visible in the draft email, and is not in the settings. The text signature is added for separate identity with no signature enabled. I want to stop this. Any ideas please?

Used old method to setup email accounts and it worked fine. New UI will jam the user name and host name and host name together for new email account setup. In UI for: Username It will have the full user and host together eg. test1@test.com Then during account setup after you enter password, I can see it on the bottom of the UI panel, so like this... test1@test.com@test.com When you go back it will put in the Username field, test1@test.com even when you deleted the host test.com from it. Also the host field screws up. It will put a period in front of the host name eg. .test.com So you have to delete the period.

What do I do about this warning I am receiving when I refresh my inbox? "The certificate for pop.windstream.net is not valid. Someone could be trying to impersonate the server and you should not continue"

   Unable to receive new messages on my Thunderbird inbox for this warning

I have no problem receiving emails on this account [redacted]@smartpointproducts.ca however sending or replying doesn't work it's not the passwords here's my SMTP server settings screenshot below.

I have my Google Calendar added through the network/gmail account process. I can see the events from my Google cal in TBird. When I accept an invite that came into my email in TB, it gets added to the TB calendar but never syncs back to my Google cal. Looking at the Error Console, I keep getting "Server Replied with 500"' errors (full error code is below).

I already tried all the online steps - delete/add calendar, clear password, reset OAuth token, still get the same issue.

calendar: [calCachedCalendar] Unable to perform playback action add to the server, will try again next time (longnumbersequence,[Exception... "Server Replied with 500" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource:///modules/CalDavCalendar.sys.mjs :: onOperationComplete :: line 580" data: no]) CalCachedCalendar.sys.mjs:570:20

I'm running Thunderbird 157 64bit for Google email, Calendar & Tasks. This has worked nicely for months even after the upgrade to 157. Today Calendar & Tasks fail to connect and are completely blank. Apparently the Add-on 128.5.12 (Philipp Kewisch) that made this work has been disabled for some reason. Please don't tell me that Thunderbird has suddenly decided Google Calendar and Tasks just aren't needed by anyone anymore. There is no new connector available that I can find, just a suggestion to go back to an older version of Thunderbird? Please help me understand. Thanks!

I've received the following message the last few days when I send an email with Thunderbird:

Your message was sent but a copy was not placed in your sent folder (Sent) due to network or file access errors. (I am sure neither of those errors apply.)

It then gave me the option to "save" (I didn't get the exact wording before I clicked on "save") and I don't see it anywhere. This was a very important email and I need to find it.

It's very odd. Normally moving an email, say from the Inbox to the relevant year's archive, takes "no time at all".

Which is true for all the mailboxes shown on the attached screenshot, EXCEPT for the four at the bottom. Moving even one message from Inbox to Yiddish can take ten seconds or longer (with the dreaded "Not Responding" occasionally). Moving something in the opposite direction is also screwy, only from those four.

I had thought that it was because they're rather large. This first started when there were just Yiddish and MSW, and I split off most of the earlier years into the archives shown. To no avail.

It's only an annoyance, but I'm puzzled about how such a thing could happen.

Also very slow tagging or untagging a message just in those mailboxes.

Moderator Notes:

• need a performance profile https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance

There used to be an option before, but now it just always pops up. It is never useful for me and constantly switching to offline mode or using some other account first is a pain. There is no button to continue manually.

I just purchased a new PC. HP OmniDesk Slim model with Intel Core 13, Win 11 home version, 8 GB DDR5, 512 GB SSD. I just read a previous article, "Move Thunderbird data to a new computer." When you make the move, does it also bring your account settings with the move? And by the move, I mean copying and pasting from old PC to new PC. Or do I enter this info manually? I am moving data from old HP w/win 10 originally installed, to new HP w/win 11. I also read a previous article on forum, "An alternative method for manual transfer between Windows 10 and Windows 11 computers." This was also included in this article. "This section assumes you have a default Windows installation and will work on computers upgraded to Windows 10 from previous Windows versions." My old computer had win 10 originally installed, not upgraded, (as stated above). Any info/help you can offer will be deeply appreciated. Thanks

I'm getting a popup error message saying "Unable to write the email to the mailbox" on one of my gmail accounts. This has happened a few times before and I'm not sure how I managed to get it working again those times, seems hit-or-miss. I've compacted and run a repair on the inbox folder several times as suggested by others. I've updated and restarted Thunderbird and even updated windows and restarted more than once.

Windows 11 Pro Thunderbird 158.0 (64 bit)

I'm attaching a screenshot from the Error Console (Tools -> Developer Tools -> Error Console)

I accidentally clicked on something at the top of the Inbox messages and suddenly everything was alphabetized. I've tried several times to figure out what happened and to get it back without bothering you, but have had no success. Now, of course, because I've tried so many things, the Inbox is really goofed up. Can you help me reset the Inbox so I don't have to go to All Mail to see my messages? I like having current messages at the top.

I received a message with a password-protected attachment, and opened it in Thunderbird (in Windows 11).

I found that the password I'd been sent did not work with the attachment. I inadvertently closed the Thunderbird app with the password prompt still open.

When I tried to open Thunderbird again it tried to load the attachment and then just hangs indefinitely. Using safe mode has the same result.

Please can you suggest a solution?

Thanks

First know that I have threading turned on. I am unable to find how to thread several email messages that I know are related. How can I do that even though they may not automatically be threaded by certain wording? Thanks Russ Pond