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Hi all! Happy Firefox user for over 20 years here. Recently I've had to switch to Chrome for one of my use cases, Google Cloud Monitoring dashboards. They're evidently JS- and data-heavy, and they're often unusably slow in Firefox. I often see delays of 10s or seconds when clicking any button or link, rendering data, or doing anything else. They also seem to get slower the longer their tab is open in the browser. They're way more usable in Chrome; maybe not perfect, but drastically better.

Any thoughts?

I've used about:performance to take a profile on https://profiler.firefox.com/, and uploaded it to share.firefox.dev , and I know it claims to sanitize personal info, but I'm still a bit leery of posting the link publicly. Happy to share it with a Mozilla employee if that would help.

Hi, I have been using Thunderbird for many years. I have not made any changes to the standard Windows 10 version.

Suddenly, when I want to open a New Message, the button is highlighted in blue but nothing happens when I click on it.

I am using the Raindrop (raindrop.io) bookmark manager. It has been working fine on Firefox for years. However, with my recent update to Firefox 140, it is broken. Specifically, I can no longer use the highlighting function. It works fine on Chrome, but not on Firefox. I've seen several similar reports on Reddit's Firefox forum (r/firefox).

What to do? I don't want to have to switch to Chrome. Suggestions appreciated.

I have been trying to move emails from a computer to a new one. Nothing works. It tells me to create a zip file since the profile is over 2GB. If it does create one (it usually fails) then when I try to open it with an unzip program it does not appear. I did some snooping and the unzip program says it's empty. Explorer says it's over 4GB. The Windows app says it's an invalid zip file. Obviously TB can't create a valid zip file.

I've tried using just the mail folder because everything else (address book, etc) is not that important. It fails.

I do have the same version of Thunderbird, but the existing computer has the 32 bit version. The new one has 64 bit. Is that the problem?

A couple of months ago TB downloaded an update. The wrong update. I spent hours on it and in a chat for another hour or so. They had me going to different sites and downloading a number of versions. None worked. They gave up. I was told that what I was seeing should never happen. Well it did and they couldn't fix it. I finally dug around in my server and found a few old downloaded versions. One of them finally fixed it.

So, yeah, I've pretty much had it with Thunderbird. If I can't get this resolved quickly (He says after - 6 hours) there is no reason to keep fighting with it.

I found a thread on the TB community forums that said to great a new profile so I did. Now the old PC is screwed. I started another profile import. It's been running for 15 minutes. It is stuck on file 231 and has been for 5 minutes.

If anyone can figure out what to do I'm listening.

I've added pinned shortcuts to my homepage before, but am not able to do so now. I read the instructions, but am not seeing the three dot icon for the menu on my address bar. I have bookmarked the site and it is showing in bookmarks.

What am I doing wrong?

Hello Mozilla team thank you for this great effort to maintain the privacy of users I have a question regarding the translation feature can Arabic translation be available web pages When will this translation be available? On firefox

I exported a address book from Mailbird as vCard to my desktop. When I import it to Thunderbird it appears with most of the entries blank. The profiles that do appear all have missing data, such as phone numbers and email addresses. This happens with 3 different address books from Mailbird. Malibird only allows export to vCard. It also happens with a older CSV, Excel file I have tried. I am using Thunderbird 139.0.2 (64-bit).

I am running Thunderbird (release 140) with the Dark Theme selected. A few messages are received that are unreadable because of the text color chosen by the sender. I am wondering if there is a method to adjust a parameter for an unreadable message to make it readable. I would prefer not to have to change the Theme to Light for just a few messages!

An example is attached.

I am able to receive emails on Thunderbird but I am not able to send emails to anybody from Thunderbird. That happens on two computers I have. I am able to send emails from Outlook. Therefore, it is not my email provider's (BluePeak) problem. When I try to send an email from Thunderbird, I receive the following error message: “Sending the message failed. SSL received a record with an incorrect Message Authorization Code. The configuration related to must be corrected.”

Please help me resolve this issue. Thank you very much!

After converting from Outlook to Thunderbird, I can see there are 23 unread mails in my Inbox. My problem should have a very simple solution, but I cannot find any. How do I filter my messages in the Inbox to show only those unread???

Bjorn B. Juvkam

If I need to upload a file I click on the OPEN or BROWSE button in the website, Open File dialogue opens trying to list the location it is already looking at, and it hangs for over 30 seconds before listing files. This is windows 11, but it did it when i had windows 10 too. I dont know what to do.

In the Settings > Local > Disc Space I have selected: Delete messages more than 61 days old.

In the Local > Trash > [right click] > Properties > Retention Policy, I have also specified: Delete messages more than 61 days old.

Why are the messages deleted from the Trash when I close TB?

I am using version 140.0.1 and wish to rearrange the order of my email accounts if this is possible and easy to do.

I cannot find any guidance on this subject for the latest version.

hi I would like to download and install firefox for android which if I understand correctly is named fenix, without going to an app store. I don't see a direct link on the main pages on the website. I noticed at https://archive.mozilla.org/pub/ it looks like it might be possible to get the apk. My concern would be does this violate any terms or licenses? Is this 100 percent ok to do? Also does the firefox owners have anything written answering this? There are websites that imply sideloading firefox might be considered using without permission and I definitely don't want that.