All Products Support Forum

Hello. I and a friend of mine are having trouble with firefox, it seems to be using excessive ammounts of ram as pictured. I only had two tabs open and two addons installed when I took that screenshot. Any help would be appreciated, thanks in advance.

I've searched this topic since last week and I haven't come up with a proper solution. The "density" solution is still too big for me. I tried doing css, but I don't know what I'm doing wrong because there's no effect.

If you know anything how to make the tab bar thinner to make it less intrusive to the websites I always visit, please let me know. And btw, I'm not that smart in changing settings, and especially in coding like css so please do a step by step of everything I need to do if you know a solution. Thank you so much

Hello! A site kept popping up a confirmation window for an action I was trying to take, and in the confirmation window, there was a checkbox for something like "don't allow [this website] to prompt me again" (that's as best I can remember). I checked the box thinking it would just allow the action to happen without the confirmation window, but instead, the site just won't take that action anymore. How can I undo this setting? Thank you!

A couple users at our site intermittently receive a SSL_ERROR_BAD_MAC_ALERT error when navigating to Google in Firefox. This happens in Version 99.0.1 (64-bit) on Windows 10 computers. When the issue occurs, users can navigate to other websites without issues. Navigating to Google in a different browser works no problem. Restarting the browser will resolve the issue. Clearing cookies and site data has no effect. Users can also refresh the page after some time and the issue will go away.

Any idea as to why this is happening?

I am running El Capitan and need Firefox 78. I went to a site offering 78 as a download, and version 91.5 came down. Site offering 78esr, same thing. Went to https://ftp.mozilla.org/pub/firefox/releases/ and was unable to figure out how to download 78. Clicking on 78.0 just led to more links that got me nowhere. Is it possible to download version 78 from this or any site? Thank you. heaton5

I'm trying with utter lack of success to configure a Thunderbird install to link to a Gmail account via IMAP.

System Basics: Windows 10 Home, 64bit, fully patched. Antivirus by MalwareBytes 4.30 Premium, fully updated. No fancy firewall, just a regular router.

This account had been installed and working fine until a family member "helpfully" changed the Gmail password, but reauthentication fails. I enter the account details, including password, into the Thunderbird Accounts settings for the account; it pings Google and correctly retrieves all the IMAP settings, and when I click "Done" Thunderbird opens a browser window to Google's two-step authentication with the email address prepopulated. However, when I click the blue "Next" button on that authentication page, rather than advancing to a password screen, the browser simply deletes the email address from the text box and stays on the same screen (see attached image for what I'm talking about).

Things I've tried:

• Uninstall, reboot, reinstall Thunderbird.
• Turn off MalwareBytes protection.
• Uninstall, delete every registry key related to Thunderbird, reboot, reinstall Thunderbird.
• Clear cache on every browser on the system
• Change Windows default browser settings to either Chrome (see below) or IE/Edge
• Install new browser (Chrome wasn't yet on this PC), then change Thunderbird's file handler for https to Chrome (this is MUCH harder than it used to be as T-Bird v. 78.anything doesn't have the old "Preferences" menus)

Incidentally, changing browsers doesn't seem to make a difference in that pop-up browser window, so I suspect Thunderbird is using its own internal browser and not the system browser.

I have, and can send, the support info extract from T-bird to a support technician but am unsure of uploading it here. Nevertheless, I welcome suggestions ... this is driving me nuts!

Ok so it's been a long time that i left chrome and joined the firefox community but there was always something which felt left out, so i downloaded chrome again and found what that was. It was the size of toolbar.. In chrome toolbar is smaller but in firefox it takes some space. So i want smaller toolbar here in firefox because i love every other thing here. So is there any way to do this? Thanks,.

After installing Ubuntu 20.04 LTS Clicking on Firefox or Thunderbird it hangs the computer and have to switch off the computer on main switch. Reinstall Mozilla once but no difference still hangs Ubuntu. Need help on this one Thank you

Getting error SSL_ERROR_BAD_CERT_DOMAIN on all my sites that are signed with a SSL Cert from my internal CA since updating past version 99

This appears to be a bug starting after Firefox version 99 on Windows because after i upgraded to Firefox version 100 i started getting this on all my SSL Certs from my CA and they worked fine prior to the update. Can anyone confirm if something changed after version 100 that is causing this?

Thank you.

How do you remove The Firefox Title bar from my desktop? It prevents me from clicking the "Accept or Decline" buttons for example on software installs for example. on your support page I tried the "firefox menu> + customize & disable the title bar through the button in the bottom left corner of the window". There is no "customize" option.

Since the update to ver 91, I often get "Unable to save your message as a draft. There was an error attaching (filename of photo). Please check that you have access to the file."

Suddenly, Thunderbird 78.9.0 (64-bit) Win10 is very very slow

I don't want to reinstall and have to redo all my settings - anything I can do for this?

All else works OK on the PC, Thunderbird was OK before.

Any way to back up my settings so I don't have to do all that again?

Thank you

On ubuntu 20.04, the snap version of firefox can't play some videos. Some youtube videos will play but streams won't, and then I get the message "to play video, you need to install the required video codecs". On telegram web and tweetdeck I also get this message while trying to play some video.

Since it's a snap, nothing I do on my system will solve the problem, I cannot install any codecs.

It's firefox 89.0

Hi has anyone find a good way sync microsoft office online (outlook.com) calendar in thunderbird? I have been trying to get a working solution with exchangecalendar add-on, but apparently this add-on has been deprecated. https://github.com/ExchangeCalendar/exchangecalendar/releases/tag/v4.0.0

I am running window 10 on my laptop and Firefox started opening today in a small window in the upper left of my screen. I have no problems with other browsers but Firefox is doing this repeatedly today. I will reboot and see if that helps.

I have just had to install thunderbird on a new PC, and the email setup system is causing serious crash errors (red boxes with lots of text and Stack Overflow programming bugs (the actual thing not the website) ). I want to try installing an older version of Thunderbird, specifically 78.13.0

And I can't. The thunderbird website only gives me the ability to download the new version 91 or nothing at all.

I can find possibly older versions of thunderbird from 3rd party websites but they look a little.... off and I don't fully trust their content,

But, Why on why can't Thunderbird offer historic downloads of previous versions for those that need them or those that want to explore if they work on our specific systems.

How do I download version 78.13 from a reliable source?

A website MultiSafepay.com has saved my CVV number in Firefox.

How do I edit the autofill data?

I can't get to the same payment page, to be in a position to delete it.

Most links on this matter refer to:

 Options => Privacy & Security => Forms and Autofill

However in my Version: Firefox 98.0.1 (64 bit) running on an up to date Windows 10 this feature is missing or deprecated.

Can anyone say how I could edit/delete this specific entry, or point me in the direction of where this data is stored?

In the mean time I can't recommend using Firefox for entering critical security data, where websites can allow the storage of CVV numbers.

Hello, Firefox 91.0.2 shows in dev. console: Firefox can’t establish a connection to the server at ws://127.0.0.1

The Private browsing window has the issue too, but i am unsure if it really disable all extensions.

When i use different Firefox profile, then the localhost site i am trying to load is loaded without that error. So how to discover please which FIrefox profile setting is preventing the loading please?