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Hello Thunderbird Community Help!

After reviewing and implementing all the suggestions on the Mozilla/Thunderbird support pages and on the internet, I still cannot send emails from my office365 mail account from Thunderbird. I was able to send/receive email messages until about 4-5 days ago. From several different accounts on my laptop. And from two different laptops: one using Windows 10 and the other 11. Now, both will receive emails to their inboxes but neither will send a message.

I have the various set-up parameters set as recommended for SMTP using Oauth2, see below and the attached photo:

Outgoing (SMTP): Server: smtp.office365.com Port: 587 Security: STARTTLS Authentication: OAuth2 Username: Your full Office 365 email address

I have deleted the stored password hundreds of times. I have deactivated MFA with Microsoft. I have deleted the e-mail profile in question many times, and have re-created it using automated and/or manual configurations. And I have deleted stored passwords.

I keep getting this message:

"Login to server smtp.office365.com with username [my.email.address] failed." With three button choices: "Retry" "Enter New Password" "Cancel"

No luck with Retry or Enter New Password. They both result in a brief, failed re-attempt to send the email message, and a return to the previous message and choices.

Pressing "Cancel" results in this message: "Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'."

Additionally I've reset my MS password several times. And MS seemingly is uninterested in having TBird/me login to my office365 account. I just get this response repeated over and over:

"Login to server smtp.office365.com with username [my.email.address] failed." With three button choices: "Retry" "Enter New Password" "Cancel".

I've spent a LOT of time over the past few days and over the weekend looking for a solution, but nothing so far has worked and I'm at my wit's end!!

Any help that you folks far more experienced with TBird can give me to get things working again would be GREATLY appreciated.

Best regards...

Tony

I updated to the newest version of Thunderbird. I was having problems authenticating the accounts I have set up (I was required to do this after the update), but finally succeeded. Two of my accounts do not show all of the folders that are in those accounts. The other accounts are fine. When I try to subscribe, the missing folders do not show up even after refresh. The folders are in the web interface for those two accounts, and also show up fine in my phone. I removed the accounts and re-added them, but the folders still do not show up. The two accounts (Frontier) are hosted by Yahoo. I also have a regular yahoo account and those folders show up fine.

Just reinstalled and re-setup Thunderbird. This morning, a window popped up on my desktop titled: Activity Monitor. Never seen this before. Did I turn on something to make it appear? Can I turn it off?

I was cleaning up my wife's email when I noticed there are a lot of messages unread and in the trash folder that ought not to be. I am wondering how to fix that for her. Example: some amazon.com emails about orders, or emails from favorite merchants or websites.

hi today thunderbird started showing yahoo popup login and after adding credentials i always get "something went wrong.We could not sign you in. Try again from a different device." Also popup once closed it opens instantly.

i can sign in normally from browser. thunderbird version is 147

is there any fix about this?

thanks for any help

regards

I have used Thunderbird for many years and and have loved it. However, recently my "Local Folders Inbox" have been extremely slow (deleting emails, reviewing an email, etc.). I have tried every suggestion that I have found without any change: reducing emails in the folder (down to about 75 remaining), compacting and repairing the folder, deleting and rebuilding all of the msf files and global database, disabling all addons, empty trash and junk, clear the cache, disable hardware acceleration, exclusion in antivirus, etc. It has become very frustrating. Any suggestions would be greatly appreciated.

TB on Windows

Prior to TB 148, OAUTH worked for POP3 access to: Gmail, MS Outlook, and Yahoo.

After TB 148 upgrade: OAUTH to Yahoo fails, subsequent log-in page also fails. Both OAUTH to Gmail and OAUTH to MS Outlook still work fine.

Rolled-back/Reverted to TB 147.0.2 -- OAUTH to all works fine, as it did previously.

Note: YahooMail seems to have other problems. But I was able to confirm successful OAUTH and POP3 to YahooMail after reversion to 147.0.2.

Created new yahoo mail IMAP (PKCE) account using Thunderbird account creation. All seemed to work well. However, new account does not receive mail from "some" other IMAP and POP accounts in testing, including from TB Pro. Strangely, mail sent from oldest POP accounts works. Mail from newer POP gmail and TBPro accounts is not received. TB 149.0b1 Windows 11

I have an outlook work email account in Thunderbird. Now I need to add another for a charity role. The first/work one is fine, but I can only receive emails on the second/charity account. I've tried different setting for the outgoing server but I don't really know what I'm doing with that - can you help please? Thank you.

There is currently no setting in the Thunderbird calendar for a recurring date on the "last workday" of each month. This is very necessary for certain recurring dates, such as payments issued online monthly on that date.

This function is included e.g. in the Nextcloud calendar app, but not in the Thunderbird mail calendar.

Is this something coming soon?

Thank you very much.

When using Firefox to access certain sites on this laptop such as Marriott.com, United.com, AA.com and Spirit.com, after I login and start a search I get an Access Denied message. However, when using Firefox on another laptop I am able to d a search for a reservation on these sites. This leads me to believe a setting on this specific machine has been changed and I do not know how to correct the situation.

Access to the above sites works without any issues on Chrome or Edge.

Warning: Potential Security Risk Ahead

Firefox detected a potential security threat and did not continue to na.nikken.com. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

What can you do about it?

Probably nothing, since it’s likely there’s a problem with the site itself.

The site is ok when I open on another window and even on Google which I don't like.

I cannot get the bookmarks toolbar to show "Other Bookmarks" on the right end of the toolbar. When I right click on the toolbar, the option to "Show Other Bookmarks" is greyed out.

I completely uninstalled Firefox, deleting all residual files and registry keys, then reinstalled the software, and it hasn't fixed my issue.

I cannot find any support forums or articles that have provided a solution.

Since the up date my yahoo and AOL account want me to enter the password. When i do it is not accepted. It is correct since i tried it on a friends computer. I tried to use forgot password and it says I should enable java script and turn off ad blockers. I cannot do this in Firefox nor do I think it will help.

Here is the message I get when trying to access Kroger's website (and a few others). Access Denied You don't have permission to access "http://www.kroger.com/" on this server.

Reference #18.2ba42617.1772484744.8c597d44

https://errors.edgesuite.net/18.2ba42617.1772484744.8c597d44

This does not happen when I use edge. I have tried numerous fixes that I have found on line but none have worked. I

bold text "Secure Connection Failed

An error occurred during a connection to chatgpt.com. Cannot communicate securely with peer: no common encryption algorithm(s).

Error code: SSL_ERROR_NO_CYPHER_OVERLAP

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more… "

i show this problem please solve this .

I am having trouble signing into some of my web sites. This problem just started. I have tried everything even uninstall and re-install. Nothing works. What do I need to do?