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I want to use thunderbird on a Windows 11 laptop. Tell me how to connect Thunderbird to send and receive emails from email account, jds@sefcik.net, hosted at smartmail.buz.net.

After the last Firefox Update, I can no longer log into my healthcare website. It loads login screen, enter information and it fails to redirect, returning to login screen. mymercy.net works fine with Edge and Chrome. But I have Firefox set as my default to switching is a pain! I have cleared everything.. reloaded firefox and it still does the same. Tried it with 3 different computers with the same result, so there is something about the new update that mymercy.net doesn't like. any suggestions?

Hello there.

Since last update i'm unable to browse websites like youtube, social media and all other websites with video content. Video often fails to load,the wholewebsite is not loading, freezes while played or while exiting full screen mode. All of these freezes the browser - the site cannot be refreshed, links does not work. The only way is to close the tab with the freezed page or kill the Firefox process in windows Task Manager. Refreshing, re-installing, deleting or using different profile don't work. Same with add-ons. Seems like the issue lies within the browser and it started to appear since last update.

Attempting to install Thunderbird on an additional desktop using same address as my original computer has. That was my question:

Lin answered: Please quote any and all error messages you see, in full, verbatim. Screen shots would be OK.

Who is your email provider?

Have you compared all account settings, not just the email and password?

Here's my answer to those questions: "Authentication error" "probably wrong configuration, username or password."

My email provider is MTA (Matanuska Telephone Association) Yes, I currently use Thunderbird in my other desk top and it works fine.

New user - I recently moved thousands of messages from my inbox to a local folder.

At some point, Thunderbird asked me to compact folders and I said yes. I noticed today that I am now missing about 13 years worth of messages from my local inbox folder.

Since I moved them, it deleted the messages out of the original inbox (I also logged into that account via the web and they are not located in the trash on the server either). There are now only a handful of messages there.

Does compacting mean that messages are deleted? Everything else I read said specifically that it would NOT delete messages. Any tips on how I can recover some really important messages? (It deleted about 13 years worth of messages from early May 2026 back to mid-2013, so there are recent messages in there I really need!).

Steps already taken: I tried using "repair folder" and that did not work. I do not have any automatic filters set up. I tried locating my Profile, and moved the "msf" files to my recycling bin, as I read that deleting the msf file would rebuild the index and display emails that had disappeared. Nothing changed. This was new for me so perhaps I did something wrong? I haven't emptied the recycling bin yet so the files are easily retrievable if necessary.

Hello All, I'm just into Firefox. Struggling with two untidy bars across top of screen. Need advice to reduce this to one. I have my Win11 taskbar to the left on my PC. Can't we do something to put current open site in there?

I followed the advise and removed all the profiles from my laptop. (Copies are on an external hard drive.) And I used the download file from the Mozilla community site which is 490 KB versus the 375 KB download file from firefox.com just in case the smaller file was corrupted. But I still got the Profile Missing error message.

I am trying to simulate a laptop that has never used Firefox and so can't say that "Your Firefox profile cannot be loaded.  It may be missing or inaccessible."  I uninstalled Firefox using the Installed Apps page. Can there be fragments of Firefox that I need to hunt down and remove? I also removed the Old Firefox Data folder from the desktop.

How can I successfully install Firefox? Then I will use my old profiles that contain all my bookmarks.

I just replaced my WiFi router and was able to get 5 messages after new network set up, but now it can't connect to outgoing or incoming mail server.. I double checked all my setting with Spectrum and all looks good, but won't connect.

I want to change the default download protocol accessing the mail server from imap to pop3. I went into the account settings & changed the default selection from imap to pop3. But the change does not take effect. Tbird still accesses the server using the imap protocol.

since v150 came out ive been having an issue where i get a flash of white on start up if i have Homepage and new windows as Firefox home with a wallpaper... i have re-installed firefox and tested it as default and it still happens. seems the wallpapers have a delay till it displays properly.