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I've installed various Markdown Viewer extensions, but I can't get any of them to function. When I open a .markdown (or .md) file with Firefox, the file is displayed as plain text. My markdown test file is very simple: some text, a couple of headers, a couple of lists. The file formats correctly on my android phone. Opening an HTML file with Firefox works fine. I'm baffled. Any help out there?

A week ago I got a BSOD that ruined settings of most of my extensions and most likely some of Firefox's settings too (at least it erased my custom findbar.matchdiacritics value, but probably not just that). After that I moved Firefox's folder and re-installed it. I also created a new profile. The 2 profiles are synced. Because of that, the new profile got (almost) all the extensions from the old one automatically. Then, I decided to do a clean install of those extensions (the reason why is a story for another ticket). So, while both profiles were opened, I removed one extension in the new profile, waited for a bit and checked the old one to see if it got removed from there too. At first it wasn't, so I thought they are not synced (anymore). Yeah, sure, but once I removed all extensions from the new one, the old one woke up and removed all extensions from there too. Great! Awesome! Loved it wholeheartedly! It really had to wait until I removed them all, didn't it? Anyway, I had a backup of my old profile, so I restored my extensions and their settings on both profiles eventually. So now I have clean installs of Firefox and extensions. Back to the issue. I can't load Steam pages (at least store.steampowered and steamcommunity) normally anymore. They load forever, and if the blue dot eventually stops moving (after an insane amount of time), it's either a plain white screen, or badly loaded page with most images missing.

• Edge loads them just fine
• Steam client loads them just fine.
• If I turn on VPN plugin (I use Browsec), then it works. It's like that in both old and new profile. That's why I mentioned that funny little story before.
• Tried Troubleshoot Mode, didn't help.
• Tried to selectively disable some extensions, same.
• Obviously tried to remove cookies, Ctrl + F5 and whatnot. Btw, if I clean everything and try to load it, then it's (most likely?) a white page, but if I turn the VPN on and load it first, and then turn it off and reload it, then it will look a bit better, but still will load forever with some media missing. (Which kinda make sense since something was already cached.)
• Tried to change proxy settings from “Use system proxy settings” to “No proxy” and “Auto-detect proxy settings for this network”, nah-ah.
• Tried to disable DNS in Firefox's settings, no siree.
• The console throws different warning and errors every time (that are probably even unrelated). Or none at all.
• Probably tried something I already forgot about.

Also, it seems the culprit is actually Akamai (it's where the Steam stores its media) or whatever is preventing reaching it. Because it often shows something like “Waiting for community.akamai.steamstatic.com...” in the status bar for a long time. It seems like the problem is within Firefox's settings, and it also looks like settings aren't synced across profiles (or at least some aren't, I definitely had to configure them on the new profile manually). Anyway, I am out of ideas and my butthurt thrust is about to deliver me to Uranus. Thanks for your attention!

On windows whenever you move a tab and nudge it out of the window, it instantly creates a new window for it, but on SteamOS desktop mode, instead it only creates a new window once you release the tab onto a blank desktop. This is causing a number of glitches for me, most notably if I release onto a desktop that already has an app, it will create a ghost tab or occupies the same position as a different tab making both of them unusable and I want to know how to change it to be more like Windows, or is this a Firefox specific thing in which case will switching to another browser fix the issue?

In both my desktop older installation (now updated) and my new laptop installation, when I go thru Account Settings and check off what I want, it all changes when I leave the setup. I uncheck the startup page, and when I open both versions of Bird, the startup page is there again. Same with table/card setup, and other options. Isn't there a "save" in Account settings? Thanks, Stacy

In the picture you can see a round circle with a suitcase in it. It gets in the way of trying to use the websites. When you click on it other websites come up. How do I remove it from my browser?

I have multiple accounts to keep different tasks separate(ish). Let's say forums, work, school, family, and shops.

When I ask to 'download messages for all accounts' it doesn't even start with the default account, 'work'. There's no rhyme or reason to the order. It'll trundle forever working on 'forums' when what I want is 1) work, and 2)school so I can start dealing with those while it can take as long as it wants on the others.

I have tried and tried and tried to find a way to tell it what I want, but it keeps ignoring me. The closest I've come is entries in user.js, but it's still not working because I'm not at all sure of the syntax.

What should I have for these lines in user.js? (Pretend those account numbers refer to my five categores above.) Or am I on the wrong track?

user_pref("mail.accountmanager.accounts", "account2,account3,account4,account5,account1"); user_pref("mail.accountmanager.defaultaccount", "account2");

Thanks for any help you can provide!

Thunderbird 128

Has any body else found Firefox relay to be mostly useless? I put up with the annoyance for a few days and then had to get rid of it.

I did use it once to get past the id page for a purchase just to look at the freight cost. Too much, so the tab was closed straight away and the masked email did not leave my computer.

The problem is that signing up to new accounts or providing your email online is something that is done only very rarely compared to the number of times your email has to be used to login to an existing account but relay has to be in the way every time.

Just a hint to the developers, those accounts already have my email and they will never lose them. Also if I need to use my email to sign in, giving a mask email is not going to work very well.

Relay is a great idea if only it could determine the right time to get in the way.

I have a fresh install of ubuntu 24.04.3,... on my AMD 'go-faster' PC. S/w all up to date,.. and snaps up to date. In my pursuit of migrating TB email from one m/c to another,... nothing works,.. least of all the TB i/f. My TB screen looks as follows:- with only a few seconds in-between shots. This 'font' type issue is my primary problem,.. and is consistent even if a create a 'new profile',.. emails are display still with funny fonts, ( which change as my mouse moves over them ). secondary issue is in copying over my '.thunder' folder structure, from one m/c to new one,.. is TB insists on creating new profile,.. as it reports profile is outdated,.. yet as far as I can see both are running TB 140.2.0esr 64 bit. I have tried several clean installs,.. but results 'seem' to be the same. Does anyone have any ideas...

I am having my Thunderbird run so very slow. It can take up to 10 mins to load my emails even though if i load my emails though Gmail it comes in immediately’

I contacted my server and they went though all my settings and found that there was no problem from my server. When I opened my email on my Gmail or on my Cell phone using my gmail server it comes in immediately.

Does anyone have some help that could fix my problem. I sure do not want to abandon Thunder bird after so so many years having such good service with Thunderbird.

Thanks Gib

Thunderbird (140.2.1esr) suddenly stopped downloading emails on 8th Sept 2025, although new emails are still accessible on my email server's webmail, suggesting the problem is with Thunderbird not accessing the server. Sending messages in Thunderbird is unaffected. Have tried every solution I can find online, but problem still persists. When I click 'Get messages' , at the bottom it says 'Host contacted, sending login information', then 'Checking inbox for new messages', then 'No messages to download'.

I am using firefox on ubuntu (firefox 142.0.1 (64-bit)) and using vertical tabs in the side bar. I recently started using the new(ish) feature of tab groups and I absolutely love it. I was using STG (simple tab groups) before and that fine, but this is way nicer. The only small annoyance I have, which could be a mistake on my side. Is that some of my tab groups are shortend seemingly randomly? If I for example make a group named "phone" it is visible like that, but after a couple of hours it goes to "ph...". I thought it may be sidebar width not being wide enough, but you can see in my screenshot that is not the case. Strangely if I make a new group it is always complete.

So I was wondering if I am missing a setting or config entry.

Thank you for reading and hope you have a great day!

Hello, I used to use FireFox consistently. Then I noticed a downgrade in performance. I checked Task Master and saw this FireFox with 45 entries. With few CPU entries, but over 3 Gigabytes of Memory usage. Why would that be, and what can I do to correct it and still be able to use FireFox?

I have suddenly started to receive this message when I open Thunderbird "Certificate for IMAP Gmail does not come from a trusted source". When I click on this message I get the attached screenshot.

I've gone through the forums by I can't understand what it is written. It seems like everything that is written is designed for people who have a good understanding of technology. I don't but I was able to determine that the OAuth is properly set.

I am using 128.14.0esr (64-bit) Thunderbird for Linux Mint mint-001 - 1.0 Updates disabled by system administrator Currently on the esr update channel

Many messages have suddenly disappeared from local folders. But not all folders were effected. I compacted and repaired some of the affected folders but messages did not return. I deleted the .msf file for some and restarted TB. No effect.

I'd appreciate your thoughts.

Thanks, Bob

My Thunderbird updated on Thursday (9-11) I believe. Since then my autoback comes up when I close the program but it no longer backs up to OneDrive. Typically it engaged promptly and was done within 30 seconds or so. Now it just sits on this screen and doesn't backup.

Hoping whatever is stopping this can be fixed. I am a user of the program and not a programmer so if there are steps involved please know you need to provide the A,B,Cs if you will!

When I close the browser, recently it is leaving a lot of background processes running. As a foreground application, when I close the browser, I want it ***closed***. That is, no remaining processes/services. File|Exit should mean exactly that.

@Mozilla, please fix this, or add a very clear/obvious setting in Tools|Settings for "Close all browser processes/threads" on exit. I shouldn't need to get into about:config to start finding things to disable.

This has been interfering with backups because of files remaining open/locked even after the browser is closed.