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As described in [question] I am unable to install addons in Thunderbird: when attempting to install an addon, either via the in-app browser or via a file, a pop-up window appears for which "Add" and "Cancel" buttons do nothing (there is no way to move or remove the window without killing the process).

I am opening this question as this problem still persists over a year and many versions later.

Thunderbird V. 115.11.1-1 on 6.9.3-arch1-1 with Sway WM

I have been trying to solve this for a few days now. I tried to watch Netflix when it said, "Firefox is installing components needed to play the audio or video on this page. Please try again later."

I found out this was due to Widevine not being installed AT ALL on my browser for some reason. The plugins manager has been saying that it will "be installed shortly" for a week now. I already tried toggling DRM off and on multiple times. I already tried using troubleshooting mode. I already checked GMP preferences to make sure nothing relating to Widevine was set to 'false'. I already tried turning off my antivirus long enough to try everything again and still nothing has changed. I do not have any VPNs running either. I am attaching a screenshot of what the browser console shows when I toggle DRM off and on again and try to run Netflix. I am also attaching what the gmp toggles say. Please help me figure out what is wrong!

I started having new tab crashes a couple of weeks ago on Firefox and Brave browsers. I have looked in the extensions settings and do not have any added extensions so that did not cause the problem. I also run Norton antivirus and Norton Ultimate utilities software and regularly clean out files and scan my computer for malware. Not sure if Ultimate Utilities is the problem since I have had other problems in the past with that program. Also, I wonder if Windows updates caused this problem? This has also caused problems in the past. To get around this problem I have to copy the link then right click on my mouse and open a new window the paste the link. Very annoying and time consuming. How do I fix the continual tabs crashing problem?

Windows operating system crashed and I had to reload it but before I did I coped all my files to an external drive Now Im back up running but need my bookmarks and saved passwords from my old firefox file What folderdo I need to copy from my backup to get my data back Note I can not run the old firefox progrea,

Is there a way to play a certain continuous tone when an incoming mail from a certain sender (e.g. xyz@example.com or just @example.com) comes in? That would be an extremely useful function, e.g. if you are waiting for particularly important and urgent mails and, for example, want to be woken up in the night when this particular important mail arrives.

Why is firefox not showing up in my authenticator app???

I saw a previous post that has since been closed suggesting the solution be disabling 2FA authentication - with all due respect to whoever suggested that, I don't think that should be the best solution. I'd like to keep 2FA enabled. I'd just like to know why Firefox doesn't appear in my Google or Microsoft Authenticator apps. I end up having to use recovery codes which makes the process a pain.

Windows 10; Firefox 126.0.1; DuckDuckGo search engine:

Drop-down suggestions a clever function, but entirely unwelcome in my universe. How to prohibit those?

The problem in DuckDuckGo search is that one cannot readily edit the original search word/phrase, as the suggestions take over that area; can't do a quick LnUp or LnDn, can't do a quick LeftArrow or RightArrow if a correction is needed -- the suggestions just decide to bully their way in at every inopportune opportunity.

I've changed whatever settings in Duckville that I can find, but it doesn't care what I need or think. I've changed the Firefox Search settings but that doesn't make any difference.

Any information/assistance out there?

Many thanks. Appreciated.

This error started a few days ago. I tried to do a system restore but that failed and now I can't find the restore point that I was using just yesterday. It only happens in FireFox, edge and chrome seem to work ok

here is the video: https://streamable.com/zffknq the issue is about transparent bar with vertical addons and slowly fullscreen animation, and the fullscreen animation isn't config-able, I already set full-screen-api.transition-duration.enter 0 0 full-screen-api.transition-duration.leave 0 0 in about:config, and disable sidebar or userChrome is not work too. and this is happend about one mouth ago after my nixos update firefox.

I've just started getting error messages that I need to enter my password to send emails. I've tried that but it still keeps saying unable to connect to the server. This has been happening for about two days now. I've tried updating Thunderbird, restarting Thunderbird and restarting my PC. None of this has worked. I made no changes to my system, software or home network. Any help would be appreciated. Thanks, Dave

Have been unable to view readers comments for a number of weeks and can figure out how to fix. it is not all the time, like last night were available but not this morning. All other browsers there is no issue including DuckDuckGo. Am using Ublock Origin, but have been using for years with no issue, even when turn off result the same.

I have a notification set so that I know when I've gotten new email. In the last month or so, AFTER I've closed Thunderbird, I still occasionally hear the notification that I've received new mail. How can that be when I've logged off and closed TB? What is causing this?

Thanks for any info/help.

As per the title, but only on a few websites, Firefox gets stuck in a neverending loop of trying to load. The page never shows at all, just a white screen and a rapidly moving loading bar at the top of the screen that gets 90% of the way across to the right then restarts.

I've tried clearing the cash, browsing history, opening the pages in incognito, etc, etc, nothing seems to work.

For the last month or so I'm constantly having issues with messaging on Facebook and with playback on Youtube.

On Facebook my messages are often not sending (I sometimes get a red "couldn't send message" tag under the message(s) I've tried to send; other times whatever I've tried to send just disappears without trace); also often my chats do not show up properly and they also don't sync properly with messages on my android phone. (Both my Firefox and my Messenger app are up to date.)

On Youtube I get issues with video playback (I have a premium account on Youtube): the videos sometimes randomly stop mid-playback and they either continue after 5-10 seconds or they just never continue at all. If the video quality is set higher than 1080p this happens more often. Other times the image freezes, but the audio keeps going. When I've watched a video and I press replay/play again, the video and the audio are delayed. I have an 11th gen i5 processor with 16 GB RAM and 250/25 Gb/s internet connection. To my knowledge all drivers are up to date. I've been chatting with Youtube support and they were adamant that I need to change to Chrome browser because this is Firefox's fault...

Also, when I use Facebook or Youtube, Firefox consumes a TON of resources (almost all resources) and makes my laptop run hot.

The only thing I can think of that might be an issue from my side is that I have many (and I mean many) tabs open in Firefox. But even after cleaning all history/cache and restarting Firefox and going straight to Facebook/Youtube, without touching any other tabs, I still have the issues with both - the two pages I use most. It's getting very tiring & annoying.

I'm using AdBlock Plus, but for Youtube it is disabled. (Youtube support wanted me to uninstall it... surprise, surprise...)

I hope you can help me find a way to fix this. Thank you