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"How can I troubleshoot and resolve common issues with my Mozilla Firefox browser using the resources available on the Mozilla Support website?"

When choosing biometrics for 2-factor authentication, sometimes Firefox will only prompt for a physical hardware key, and Touch ID does not work. Support for built-in biometrics is inconsistent.

For reference, I am using Mac OS Sonoma 14.4.1 with an ARM processor.

Just switching between inboxes can cause up to a 10 second delay with Thundebird "not responding" with the spinning wheel. It has been like this for the last few laptops I've had and through all the updates and I am getting ready to call it quits. I did a performance recording of me just clicking through the different folders and then it locks up on one. You can see it here https://share.firefox.dev/3WlrRi9

I am using a primary gmail imap account, an office 365 imap account, and another imap account from an ISP.

On Win 10 LTSC, CPU: 16 x 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz @ 2304 MHz 10240 KB Cache, MEM: 65277 MB, 60% (39120 MB) free, GFX: NVIDIA GeForce RTX 3080 Laptop GPU 16192 MB

I was able to change some of my message pane background by adding the following to the userContent.css file:

/* Thunderbird userContent.css */

@-moz-document url-prefix("imap:"),url-prefix("mailbox:"),url-prefix("news:") {

 body {
   background-color: #404552 !important;
 }

} @-moz-document url-prefix("about:blank?compose") {

 body {
   background-color: #404552 !important;
 }

}

I also tried adding the following to my userChrome.css file: /* Message pane */

1. msgHeaderView {

 background-color: #404552 !important;

}

1. messagePane {

 background-color: #404552 !important;

}

Why do I still get these two dark gray areas (see attached)? What css do I need to add to get them to be the lighter grey?

Hello,

I have just imported my old email from Outlook to TB Local Folders. Everything works out except some of the email (not all) show a wrong date in the email list. The date show a future date like 2/7/2101, 6:28 AM. Please check the attached image. Any idea?

I noticed that FireFox downloaded a Firefox HTML Document called GnT6qZGD with a size of 0KB, during this time I had tabs open from both https://wago.io/weakauras and https://www.curseforge.com/

Scanned it with Bitdefender and it was clean and when editing in notepad it is empty and a blank page when accidentally opening it.

Then completed a full system scan and it come up as clean.

I have 2 questions,

1st, Is this still a bug in Firefox that appears to have been reported before? 2nd Should I be concerned about it?

Thank you

It used to be that when I typed in the beginning of a URL, Firefox would suggest a massive list of matching URLs from my history that would slowly dwindle as I typed more, but now I get only three suggestions.

I didn't change anything, so is this a change in Firefox? If so, can it be changed back? Or made an option?

I understand the basic differences between unread folders and unified folders what I don't understand is why two of nine my accounts are listed in both unified folders and unread (see circled in red) how do I remove the two accounts from unified folders or

add more to it
and what makes it confusing is that the subfolders aren't the same when listed in unified or unread

Thank you for your assistance in advance. Since I updated my browser, I've encountered some issues when trying to maximize the virtual screen in my tv. I use a Mac and connect the screen to a web TV to watch YouTube in my big tv. However, when I click to maximize the window, the connection becomes unstable, and the virtual screen disappears every time I click the YouTube icon to do this. This problem never occurred before. I would appreciate your help in resolving this issue. Please let me know if you require any additional information from me.

I have Thunderbird 115.10.1 (32 bit) and Windows 10 Pro, 64 bit.

The reminder function quit working...nothing at all

I'll add an appointment ask for a reminder, but nothing happens however it used to work

I used to get a reminder email as well as a notice sent to my phone, but now nothing to include the folks I have invited to the event. No reminders for anyone. I have checked Notify Attendees and Separate Invitation per attendee on the Edit Event pop up the by nothing I do seems to work.

The goal is to get the reminder to the phone screen(s) and emails.

Many thanks as I'm lost on this one

Thanks!

Len

Hello, I did look for related posts but found nothing close enough to this so I thought I would create a post. I don't ever recall having this issue before v102 was introduced but now it happens once in a while but not always.

If I am in the inbox of my main mail account and choose to delete a message, it goes away and then reappears almost immediately. There is a box that shows up at the bottom right of the screen that says: The current operation on inbox did not succeed. The mail server for account (my main mail account is shown) responded: UID MOVE failed. This account is in Canada on the Bell Canada network so perhaps it is an ISP issue?

I have 3 mail accounts set up - all IMAP. If I close TB and reopen it, the message is gone as if it required the program to close in order to complete the delete request.

If anyone has experienced this and has any suggestions or tips, it will be greatly appreciated. - Thanks, Mike

Today, most of messages have suddenly disappeared from my TB inbox, leaving only the most recent 105 out of approx. 18,000. I have not performed any operations (compacting, archiving...) that could have caused this.

I immediately invoked the 'Repair Folder' command, which did not resolve the problem. Further investigation revealed that the 'Inbox' file ('Profiles' folder) actually contains only 105 messages - seems like the 'Repair Folder' truncated the file!

Fortunately, all the messages are still on the server. My question: Is there a method to 'force' reloading of the missing messages?

Thanks, Ray

I get this Error message when I try to send emails from my outlook email address in Thunderbird. Basically asking me to enter a Password to login to office365 server ! My Password is correct, and has not been changed recently.

Any ideas please ?

I am a Salesforce (improveit! 360) user, exclusively browsing with Firefox for over 12 years without any problems. The most recent Firefox update 125.0.2 (64-bit) has caused an issue with my staff calendar. I have reached out to improveit! 360 they are a force.com developer and they will not help, said the error is caused by Firefox interpreting the code. I have figured out a work around to get the calendar to load correctly for a short term solution. Below is a screenshot of the error, any help would be greatly appreciated.

Concurrent with the most recent automatic windows update (may or may not be the problem), Firefox with duck-duck-go will not go to almost any site. All I get is a spinning icon or a blank page, not even any error messages. This was even true trying to go to this page until I restarted in trouble shooting mode. Until I can get Firefox working again I have been using Chrome with duck-duck-go. Note any search, i.e. 'hotels in Italy' or even 'MSN' do the same: spinning icon or blank page!! Any help would be appreciated. Also I noticed that my bookmarks were missing and there was no bookmarks drop-down on my tools line. I have run malware bytes and it showed clean, same with CCleaner. I have re-installed Firefox; no difference. Please help. and also, any way to find and replace my extensive bookmarks list? I have reduced my privacy to near zero and turned off firewalls and all limits I could find while testing for that. That did not change anything.

On YouTube the video will start playing but the rectangle it should be in will still be black, refreshing usually works. Sometimes a video will simply stop playing. Sometimes i have to close all apps and restart the browser twice to get it to work. Sometimes trying to go to full screen will crash the app. Sometimes popping the app out of full screen into a floating window crashes it. This one is new, it's the uploaded screenshot, it crashed mid video and made the video look funny.

Others asked and were pointed to extensions. As long as extensions get access to my pages, I'm not willing to use any. So, is there an option in advanced settings, to return to previously viewed tab when I close a tab? Thanks, Cat