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When i try to fullscreen youtube, there is a transparent border on the left and top of the window that will not go away normally. The only temporary fix I found was pressing win+d twice to get rid of it. This seems to be a reoccurring issue as this only happens on firefox and nothing else. This reddit post helped me. https://www.reddit.com/r/firefox/comments/13eguvp/please_help_transparent_video_border_when_in/

Please let me know how to fix this permanently. I have also tried firefox safe mode and that curiously didnt have borders but even when i went out of safe mode and disabled all my extensions and cleared my cache, it didnt work.

I just downloaded Thunderbird to my new computer. It worked fine for a short while. Then it started deleting new emails as soon as they were imported. How can I stop this from happening?

Every so often a message pops up that a folder can't be compacted because it's in use.

I don't understand why TB bothers users with this message. Compacting folders is supposed to be invisible to the user. It'll get compacted eventually, so no user action is required.

If I'm missing something, please educate me.

And if not, what's the best chance of getting it removed? Should I submit a bug report and argue that it's a bug in the design? Is a suggestion likely to do anything?

After most recent update all my bookmarks and passwords disappeared and I cannot seem to recover them. This is extremely frustrating. Has anyone else had this happen? I tried using the recovery process but it did not work.

Hi, I was running Thunderbird on windows 10 before I had to do a system reset, so all software has been wiped out from the disk. After reinstalling thunderbird I wanted to recover the previous calendars, so I copied the backed up files within the 'calendar-data' directory to the calendar-data directory in the new install and moved the new files in a directory. (see attached image) Before doing this I had already created some new calendars in the new installation.

Nevertheless, despite the files have been moved and the older ones substituted them, I keep seeing the newly created calendars but NOT the older ones (which are the ones that interest me) and I believe I should not see the newly created ones. Why is this happening? Why is Thunderbird still showing me the new calendas when the files aren't accessible anymore??? Regards

I am logged on to my Credit Union and attempt to download my statements. When using Firefox I get the message: {"Errors":["Authorization has been denied for this request."]}

When I contacted my CU, they said to add an URL to the Manage Exceptions. This worked, but I want to know why Firefox needs this but Chrome doesn't.

No matter what I try to read or go to, Firefox crashes repeatedly. I literally cannot use it at all. I keep getting: Gah. Your tab just crashed. We can help! Choose Restore This Tab or Restore All Crashed Tabs to reload the page/pages.

Clicking those options fixes nothing! How do I go back to the previous version, please?

I ran a Windows 11 Update and after I opened Firefox, it shows all the tabs that were there but each tab indicates that it's 'Crashed'. The 'Tab Crash Reporter' doesn't restore a single tab nor does it react to 'Restore all Tabs'. It looks like Firefox is NOT connecting to the web.

I'm entering this using the Edge browser.

Thanks in advance, Bob

I have a problem in that bookmarks seem to have completely stopped working for me. I am not an expert in today's IT though a very long time ago I was. I am 81 and have incurable cancer and am confined to my home in a chair. I use FF many hours a day and I have a very structured set of tens of thousands of bookmarks. I use FF on a Windows 7 laptop. I am a contributor to Mozilla. A couple of days ago I noticed that I could not save new bookmarks. I then checked and found that I could not backup my bookmarks as either json or html. I reinstalled FF but these problems are still there. Today I have tried looking at your support information. I looked at your troubleshooting information. I copied raw data to the clipboard and out it into a MS Word file. I put FF into troubleshoot mode. I cleared the startup cache, after which I could add new bookmarks but not save any backups. I then refreshed FF and of course I then lost the first draft of this message . The refresh took quite a long time to complete, but it did. Afterwards I can still not use bookmarks. If I add a subfolder into them, I complete the process, the subfolder is added, but if I then sort the fold so that the subfolder is in place, nothing happens. If I go through the motions of backing them up, nothing happens. I see the following options open to me: 1 Buy a Windows 11 laptop, which I’m not keen on, and run FF on that. I have a windows 10 desktop available in another room, but I have no wish to be on the slippery downslope to eternally paying Microsoft for my computing. 2 Try and revert to an earlier version of Firefox. 3 Move to another browser, though for this and option 1, how to migrate my current set of bookmarks is an outstanding issue. I would greatly appreciate advice on how to get a functioning Firefox version back on my laptop. Yours, Jon

When I want to duplicate a tab, can I configure the 'duplicated' tab so it appears exactly next to the tab I'm duplicating instead of at the end of all the open tabs at the far right end of my browser? If I can't would it be too much of a bother to include that as an option we can configure? Maybe it's ridiculous or I'm using the interface wrong but it's super annoying to have to manually grab the duplicated tab and scoot it back next to the tab you duplicated from. Thanks!

Hi there I have the problem that my firefox can save any file or download on my other drives since they arent event show as an option. I did a little research and read that by default in linux for security reason was unable to, but asking in the official forum of my distro (cachyos), they can save thing in other drives with no problems.

So i wanted to know why i dont?, my firefox installation is native at installing the dristro and having all perimission but it cant see my drives except the one is installed to (and where my OS is).

The only thing different i actually do is the folder where my current user info is saved, i moved the files from my user but with the files i had from my old windows session to impor my saved sites, favorites, etc.

Can you help me to be able to save files or images on my other drives?, thank you for time.

When I am on some webpages, and want to copy and paste a paragraph, of course I highlight it first -- but as of a couple of days ago, the links to pop-up boxes on the page will not highlight. If I go to the same page with Chrome, there is no problem. I can highlight links to other webpages, it is just the ones to pop-up boxes. I have checked and this problem is not machine-specific. I am on a laptop and I checked our desktop and it has the same problem. Perhaps the recent update changed something? I have attached a screenshot of a page from Ancestry.com with the problem -- on the left I have tried to highlight the whole thing, and, as you can see, the links are not highlighted, and if I copy and paste, the links do not work. Thanks for any help you can offer Jeanne

I use Thunderbird for my WOW email. Today it stopped working (incoming) I even changed my password on WOW and have logged into my email at WOW with the new password. Thunderbird says Login to server smtp.mail.wowway.com has failed. Then asked me to enter a password. I did all that and it still has the error.

Hi, after the last update I got this message that resides above my browser window:

The security sandbox is disabled. Your configuration is unsupported and less secure

I'm on Windows 11.

I search but did not find any list of environment variables supported by Firefox. Is there such an official list, perhaps groupped by Firefox version, published somewhere?