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When I try to send I get the following error message:

An error occurred while sending mail. The mail server responded: 5.3.4 554 5.2.0 STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message Cannot submit message. 16.55847:69000000, 17.43559:0000000060010000000000000200000000000000, 20.521. Please check the message and try again.

I've tried numerous times. No problem receiving e-mails.

I assumed that the program had become corrupted and so tried to uninstall it through the Control Panel. However it wouldn't uninstall. So I opened Thunderbird in Program Files(x86) Uninstall folder but did not find an uninstall.exe file, only a helper.exe file.

My version is 52.2.1 running under Windows 10

I am using TB 31.7.0 on a MacBook Pro running the latest version of Yosemite. I use BusyCal as my calendar software (although I think that is not relevant to the problem I am experiencing).

When people send me an email with an ICS meeting invitation attached, the attachment does not arrive. I get the email but there is no attachment. So I always have to send a reply and ask them to manually type the meeting details into an email, and then send it to me. It appears that this problem occurs when meeting invitations are generated with Outlook. (That's a guess on my part.)

I've read through the forums to try to find a solution to this problem, and I haven't been able to find it.

Any suggestions?

From the article "Microsoft OAuth Authentication and Thunderbird in 2024" there is a screenshot showing a OAuth2 option for the SMTP server setting with STARTTLS connection security. It does not appear for me. There are only the five options, as shown in the screenshot. How do enable the option to be available in the drop-down list or set it?

The available options are:

No Authentication Normal Password Encrypted Password Kerberos / GSSAPI NTLM

I am on Thunderbird version 115.12.1 (64-bit), Windows 11, version 23H2, build 22631.3737

I have Thunderbird Version 45.8.0 where after composing a message when I click Send, the message disappears nicely from the screen and the message is off.

However on the latest version 52.1.1 (32-bit) when I do the same action, Click to Send.. the message stays on the screen for a while and I have to wait for it to disappear before I can do something else.

Is this a case of different versions or is there a tweak in the new version that I can set up in order for the Send function to behave the same way as the older version?

It is getting quite annoying sitting and looking at the screen for the message to disappear after clicking Send.

Thank you for your help.

On chrome I have several profiles and different ones use different LastPass (and other) extension services. EVERY PROFILE maintains it's OWN login information.

Firefox, however, does NOT ISOLATE PROFILES. On ANY Firefox profile, if I log into LastPass EVERY PROFILE is forced to use THAT information- even going as far as logging out and logging into the OTHER profile's information/account. This is 1990's level idiotic.

WHY are profiles SHARING LOGIN INFORMATION!? This is entirely stupid and defeats the entire purpose of multiple profiles.

I had this happen with Facebook logins, too... WHY does ONE profile FORCE OTHER profiles to change their login information?! WHY ARE THEY NOT SEPARATED?!

How do I solve this?!

it is the SINGLE biggest reason why I can NOT switch to Firefox again. Chrome does this. Chromium does it. EVERY Chromium browser does this. 10 years ago Firefox did this... and I left it when it QUIT doing this... when it BROKE profile separation.

Why is this STILL a problem?!

What Happened To The PASTE Option, When You Are Composing A New Email In Outlook  ?

If You Copy Something, Then Right Click In The Message Section Of The Email, You Do Not Get The Drop Down Menu With PASTE As An Option.

You Only Get The PASTE Option When You Right Click Into The SUBJECT Line.

Two issues using latest version of Firefox with Windows 10.

These 2 issues have occurred in the last few days

First I cannot attach my files to my emails using Gmail. I'm able to do this using Edge or Chrome

Second, normally when I used to start typing the name of my correspondent it would automatically complete. This is no longer working. I'm able to do this using Edge or Chrome

the attached printscreen shows both issues

Recent issue, April 2024. Had version 124 Firefox on Win10 computer and went to Help - > About to have Firefox check for updates. This has worked just fine up until now. The message "Failed to check for updates." is shown in the About screen. I have uninstalled and re-installed Firefox with the same results. Have also un-installed Firefox, un-installed Mozilla Maintenance, then removed Firefox data from App Data folder in user directory, then re-installed with the same results. Also, now when I access a local media server, I keep getting the message "Firefox is installing components needed" and that never goes away. Any ideas?

Something is going on with Firefox. Web pages will not load, and the error message is "we could not verify the certificate: reason = timeout".

My internet speed is 400Mbps. I don't have a delay here. I've rebooted the PC, restarted Firefox, and about 3 out of every 5 web pages comes up with this error.

I couldn't even get to the Mozilla support site with Firefox. I had to use a different browser.

What's going on?

Ed

Contrast disappears when I klick 'Login' eg. on 'https://www.elektor.de/'; other browsers are ok. AdGuard on or off makes no difference. Kind Regards [removed email from public]

Hi

I am running Thunderbird on WIndows 10. I have eight different email accounts, but only one profile.

This morning on startup, all accounts and folders were gone and the "open your account" tab was open.

After several hours of frantic searching on the net, I took the most recent profile "prefs-9" and used it to overwrite "prefs.js" This brought back all my local folders and saved emails.

However, the email accounts used to be Wotsit@gmail followed by Inbox, Sent, Draft etc. Now the first account name has been moved, leaving behind its old Inbox, Sent etc with the correct email count but nothing at all in the right hand pane. The account header has re-appeared amongst other account headers but with nothing in the Inbox, Sent etc.

What I need to do is make all the emails visible in the "headerless" section, and return the correct header above them.

Here is what it sort of looks like -

Inbox (3) 2100 Sent 998 Drafts

Then further down after other accounts - Wotsit@gmail.com Inbox Sent Drafts

How can I move the Wotsit header back to where it should be?

I really appreciate the help you folks offer, and the time you put in helping us mere mortals!

Made a mistake and installed 157.7.0 on Linux

Now cannot backup/restore to another computer so cannot use that computer.

Old Profile used to be in .thunderbird folder - easy!

Now profile seems to be in /home/oem/snap/thunderbird/common/.thunderbird/26pphmrb.default

This does not contain all emails especially for pop3 and anything after Nov 23. It does not work

Q's

Best way to fix? Can I force it TBird to read the .thunderbird in home directory? Can I install an older version of TBird easily? Is there some other way to restore the profile and clone another computer?

I had a few issues with Hotmail and Firefox in the past as described in other posts. Now it has stepped up a gear. I can use the internet for anything, but the moment I open my Hotmail account in Firefox my Lan card stops working. At first I had no idea it was Hotmail, I tried everything from switching cables to using wifi only. When it happened on wifi I realised every time I went into Hotmail on Firefox my network card stopped functioning and I had to restart the computer. The thing is, when I use Hotmail through Microsoft Edge nothing happens and all is well with the world!!! No network card shutdown. I could read between the lines but I'm no conspiracy theorist, however, I don't think the problem is with Firefox. Is there any solution? I don't use Edge and I don't want to start.

Hi, I've received the email below from Microsoft today.

I have 15 email accounts linked to Thunderbird mail and use up to 5 of them daily. Sometimes 'instant' communications on one or more of my accounts can be important.

Will Thunderbird mail still function in the same way from 16th September?

I apologise if this question has been answered somewhere else. I searched but could not find it.

"The safety and security of your information is top priority for Microsoft. To help keep your account secure, Microsoft will no longer support the use of third-party email and calendar apps which ask you to sign in with only your Microsoft Account username and password. To keep you safe you will need to use a mail or calendar app which supports Microsoft’s modern authentication methods. If you do not act, your third-party email apps will no longer be able to access your Outlook.com, Hotmail or Live.com email address on September 16th.

What do you need to do?

If you are receiving this email, you are currently using an email or calendar app that uses a less secure authentication method to connect to your Outlook.com email account. You will need to upgrade your third-party mail and calendar app to a version which supports modern authentication methods.

Microsoft provides free versions of Outlook for your PC, Mac, iOS, and Android devices which can be easily downloaded and connect to your email account. Using an updated version of an Outlook application will ensure you are connecting in the most secure way.

How can you set up your Gmail, Apple Mail, or other third-party mail application?

Various non-Microsoft applications will have their own steps for connecting to your Outlook.com email account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods."

In my attempt to help my wife with her email problems I have managed to totally screw up her profile. There now duplicate inboxes, duplicate local folders, duplicate Outlook Express Import files, etc.

Is it feasible to export/backup the inbox, address book, files&folders, Outlook Express Import files (but not the profile), then uninstall Thunderbird in order to start over? If so, how is the best way to do this?

She only has one email account on Thunderbird and is running Windows 10.

Thanks in advance for any help.

In case anyone's interested, under Debian 12, when I resume from hibernation, if I have Firefox running as well as Tbird, if I click on a link in an email, the existing instance of Firefox is ignored and a new instance is opened. The first instance is in fact frozen -- it looks as it should but trying to change tabs or open a new tab is inactive. Seems I have to kill the open instance of FF, then if I click on a link in an email, FF pops up as it should with a new tab for the link, but the existing tabs are all there and all functional. It feels like a bug -- Tbird seems not to know that FF is already running.