All Products Community Forum

I am trying to access certain HTTPS websites and some of them show PR_CONNECT_RESET_ERROR in Firefox. This error is not present in Edge or Chromium.

Here's what I've tried (none of these works):

• DNS over HTTPS turned off
• Uninstall all add-ons
• Reinstall Firefox
• Create new profile and set it as default
• Delete/rename certs.db in the Firefox profiles folder.

The only fix that works is to use Troubleshoot Mode every time I visit these websites which is not practical. Any ideas on what could be the problem?

I don't know if this is relevant but one of the websites that does not work is https://alexan.com.ph/

With Firefox 135.0 i cant reach google.com but google.se i can.

I make daily images of C: and today i managed to go back one day to 2025-02-06 but accidentally chooses 2025-01-06 and with the older version of firefox i could reach google.com

I have tried to delete cookies. DNS over HTTPS off. No proxy in connection. Add-ons off but to no avail.

In Firefox, and only in Firefox, I get 'Failed to verify your identity' on these sites. I have updated MacOS and Firefox, rebooted, tried a different DNS, and disabled all of my extensions. With extensions disabled I don't get the error, but the login site won't accept my login at all. See the attached image. I can't think of anything else to try.

After working fine for years, Thunderbird stopped receiving email from my POP accounts a month ago and I haven't been able to get it to work since. After weeks of experimentation and frustration, the only way I can get TB to download POP mail is to install and run it in Windows Safe Mode with networking. However, once installed in Windows Safe Mode, TB run in Windows normal mode will successfully send messages from each account.

It would take pages to describe everything I've tried, so I won't. The results of all the tweaking and updates is the system specs below.

OS: Windows 10 Home (x64) version 22H2 AVS: BitDefender Email: Thunderbird 102.15.1 Add-ons: None Theme: Default Accept cookies: Always Exceptions: (added any that seemed even remotely associated with issue) https://accounts.google.com https://mail.google.com https://www.googleapis.com https://pop.gmail.com https://pop.gmail.com:995 https://smtp.gmail.com https://smtp.gmail.com:587 https://pop.centurylink.com https://pop.centurylink.com:995 https://smtp.centurylink.com https://smtp.centurylink.com:587

Saved passwords: mailbox://pop.centurylink.net (mailbox://pop.centurylink.net) Oauth://accounts.google.com (https://mail.google.com https://www.googleapis.com/auth/carddav https://www.googleapis.com/auth/calendar) smtp://smtp.centurylink.com (smtp://smtp.centurylink.com) smtp://smtp.gmail.com (smtp://smtp.gmail.com)

Hardware acceleration: Off

Gmail POP server: pop.gmail.com Port: 995 Security: SSL/TLS Authentication: Oauth2

Gmail SMTP server: smtp.gmail.com Port: 587 Security: STARTTLS Authentication: Oauth2

CenturyLink POP server: pop.centurylink.net Port: 995 Security: SSL/TLS Authentication: Normal password

CenturyLink SMTP server: smtp.centurylink.com Port: 587 Security: STARTTLS Authentication: Normal password

I'm at a total loss as to what I've missed or where to look next. I would appreciate any help.

I have been using Thunderbird for many years. I have 4 accounts that have all been set up and working fine. This morning the 2 yahoo.com accounts stopped working. I logged in to the impacted accounts using a web browser and password just fine. I then updated Thunderbird to 116.0 to see if that would fix the problem, but it did not. The outlook and gmail accounts are working fine, for now.

When Thunderbird attempts to download mail for the yahoo accounts, I get a large pop-up window with "Edge: Too Many Requests". The pop-up window is blank except for that error message. I get the small pop-up with the Authentication Failure message. Sometimes I get Retry, Enter Password or Cancel. But I never see a window that will allow me to enter my password.

I can send/receive mail from the accounts while logged in via a browser but authentication fails within Thunderbird.

So there was a problem with AOL today and I'm using Thunderbird for my Verizon account now AOL is back up and running but on my computer Thunderbird will not let me log in to The Host keep saying it's failing?

The font size in "Manage Bookmarks" is way too large, both in the sections list menu on the left and the list of bookmarks. I checked my userChrome.css file as well as the layout.css.devPixelsPerPx entry in about:config and there's nothing there to explain why only the "Manage Bookmarks" text is so large.

It's possible I changed a setting somewhere that's causing this. But I'm stumped re: what setting might be controlling the font size in only that UI. All other Firefox text sizes are good.

Thanks to anyone who knows where I should be looking

Firefox 134.0.1 (64-bit) Windows 10

All my email accounts are hosted at siteground. I recently created a new domain, website, and two email addresses there. Siteground support tested the new email addresses and said they work fine. But when trying to set up these new email accounts in Thunderbird - 128.5.2esr (32-bit) - I keep getting error messages. I know the passwords are correct because I checked them in Settings. After the first step in setup, I always get "Configuration found at email provider". If I click "Done", I get "Unable to log in at server. Probably wrong configuration, username or password". If I click "Configure manually" and then "Re-test", I get "Thunderbird failed to find the settings for your email account".

After years of working flawlessly today I turn on my computer, start Thunderbird and see the following Alert pop up-

"An error occurred during a connection to pop.bizmail.yahoo.com:995

Peer reports incompatible or unsupported protocol version

(Error code: ssl_error_protocol_version_alert)"

I click on OK and the same message pops up another 3 times (Thunderbird is managing 4 email addresses for my business, hosted on Yahoo email).

I called my website host and they tell me it is nothing on their side. No changes were made overnight.

Where should I begin?

I have had an ongoing problem with Thunderbird being unable to log into the various mail servers that I use. I've tried repeatedly to solve this problem and have been able to cure it in the past by clearing the cache, but it recurs over and over again. I cannot keep wasting my time like this. I'm an independent contractor and I need to be able to use my e-mail client consistently. I've got work to do! This morning, it's suddenly decided that it cannot log into any of the three services that I use.

Is there a lasting solution to this problem? If not, please tell me and I'll move on peacefully, but please don't keep me chasing my tail for something that cannot be fixed.

My TB upgraded to V141 today and I lost my google calendar and maybe my contacts too. The contacts are there but I don't think that they are syncing anymore. Calendar appointments missing altogether.

Starting last night, Thunderbird 140.2.0esr has trouble connecting to Comcast email servers. In my case, I am getting an error that the connection was reset. Sometimes, if I close TB and re-open, it will connect for a bit and download new mail, but later fail. This is using the POP3 servers. On the Comcast forums, others are reporting similar issues. https://forums.xfinity.com/conversations/email/unable-to-connect-to-pop3-server-this-morning/68af0959e127b572a1266228

I don't have TB on my Android phone, but Outlook is also having issues with forcing me to sign in, and that can take 2-3 tries, and will . The Yahoo Mail and FairEmail apps do work on the phone without problems. These all use the IMAP servers.

https://read.amazon.com/kindle-library is now not allowing me to go onto the website. I've tried talking to Amazon customer support but they can't find a problem on their end. It says:

The connection has timed out

The server at read.amazon.com is taking too long to respond.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

I haven't had a problem with the website before and every other website I have tried works fine. It's just that one. I have added it to my exceptions list for add ons but it didn't fix it.

How can I move emails within Thunderbird? I want to move emails from the Sent folder of my old email account to the Sent Folder of my current email account. Emails don't move when I right-click on them and select "Move to" and then select the destination folder. All that happens is that the Thunderbird status bar reports: "Looking up pop...." "Connecting to pop..." "Connected to pop..." "Checking mail server capabilities."

When I try to open EML file stored on NAS that was previously stored using the same Thunderbird app (version 142.0 (64 bits)) the preview is blank (photos attached) although the message source shows content. When I copy this EML file from NAS to desktop and then open, the preview shows up correctly.

How to make it possible to open the EML straight from NAS and show its contents in the preview window.

Some time ago, with the previous (unknown) version of Thunderbird it was possible to open the EML straight from NAS and show its prebiew correctly.

When I open Thunderbird, I now get a message window asking for a User Name and password for both Caldav and Carddav.

I did not change anything in my setup and they started to appear.

Can anyone tell me how to stop these pop-ups from appearing ?

Screenshots are attached.

Thanks, David.

Hello All, We've used Thunderbird for a long time now. We recently added a few more computers to the office.

When we try to add an email account via File>New>Email Account We fill in the two fields and click to proceed and the swirling circle just keeps going forever.

As a test we tried to add extra email accounts to our existing computers and the same thing happens.

All thunderbird versions are: 140.2.1esr (64-bit)

When i google this problem it suggests adjusting the firewalls or antivirus settings. It just seems strange that this problem would start all of a sudden.

thank you for any help. zac

I am unable to get my email to work - when I open Thunderbird I get the message "500 something went wrong and we couldn't complete your request". New emails aren't coming through on my computer, nor can I delete existing emails. I can however still send and receive on my phone, which is weird.