Firefox trying to install helper tool and doesn't open at all

Here is what the message says: "Firefox is trying to install a new helper tool. Enter your password to allow this" I tried to install but Firefox won't open. Firefox icon… (funda kabanzi)

Here is what the message says: "Firefox is trying to install a new helper tool. Enter your password to allow this" I tried to install but Firefox won't open. Firefox icon just bounces around, I have to force quit to stop it. I DO NOT WANT THIS TOOL BUT I WANT TO USE FIREFOX. By the way this is sent from my other user, as the problem is on my admin. user and I can't open Firefox to do anything!

Asked by yk933zen 11 amahora adlule

Last reply by Paul 11 amahora adlule

Thunderbird - Error: Platform version

Hi, how do I get rid of "Error: Platform version '143.0.1' is not compatible with minVersion >=141.0 maxVersion <= 141.0 Maybe try to reinstall Thunderbird?" It's… (funda kabanzi)

Hi, how do I get rid of

"Error: Platform version '143.0.1' is not compatible with minVersion >=141.0 maxVersion <= 141.0 Maybe try to reinstall Thunderbird?"

It's not very practible to do a new copy everytime a Thunderbird Update has to be made because I mainly store my emails in a local copy (respectively a lot of copies already).

could you please help me?

Thx & BR Eva

Asked by eva.karlberger 17 amahora adlule

Last reply by david 11 amahora adlule

Arrange email folders alphanumerically

For some reason (accidental key stroke?) one of my email account's folders are no longer arranged alphanumerically. How can I reset the order to alphanumerical? I can't f… (funda kabanzi)

For some reason (accidental key stroke?) one of my email account's folders are no longer arranged alphanumerically. How can I reset the order to alphanumerical? I can't find a menu item or setting to do this. Thanks

Asked by Jonathon 19 amahora adlule

Last reply by david 11 amahora adlule

Firefox Android: Copy URL

hi. how can i copy or cut the URL from the address bar?? There is no pop-up, drop down ? All other browsers can do this. and also the whole text in the bar seems no… (funda kabanzi)

hi. how can i copy or cut the URL from the address bar?? There is no pop-up, drop down ? All other browsers can do this.

and also the whole text in the bar seems not to be selected.

Asked by Clemens Ratte-Polle 15 amahora adlule

Last reply by jscher2000 - Support Volunteer 11 amahora adlule

Bookmarks not working

My bookmarks toolbar is showing, but it's empty. All of my bookmarks are gone. I went to a websites and attempted to add it to my bookmarks toolbar, but Firefox failed … (funda kabanzi)

My bookmarks toolbar is showing, but it's empty. All of my bookmarks are gone.

I went to a websites and attempted to add it to my bookmarks toolbar, but Firefox failed to add it to my toolbar.

Asked by johnaukerman 2 ezinsukwini ezidlule

Last reply by jscher2000 - Support Volunteer 12 amahora adlule

Datepicker in email

I am a M365 - leaver, and working several months now with Thunderbird/LibreOffice/Nextcloud. Sometimes I'm proud of what I learned and can do with the new software. Somet… (funda kabanzi)

I am a M365 - leaver, and working several months now with Thunderbird/LibreOffice/Nextcloud. Sometimes I'm proud of what I learned and can do with the new software. Sometimes I'm a little lost in the woods.

I'm using the add-on Quicktext to insert default html text, like a template, in some of my my emails. One of the templates is a notification for my customers to inform them the invoice they received from me is not yet paid.

In the former software I was used to click in my template on a datepicker to insert the senddate of the invoice. I tried to insert a html-datepicker. This appears in the email, but is send to the reciever as a datepciker, not as the date I choose.

My question. Is there a way to insert a datepicker in a template like Quicktext, or is there a better add-on for this goal?

Asked by Klussenpunt 20 amahora adlule

Last reply by sfhowes 12 amahora adlule

problem with update to 140.3.1 ESR from 128.14.0 ESR

Windows 11 Pro on Lenovo ThinkCentre. I switched to ESR a while back, when the regular and ESR versions coincided. All updates since then have worked fine, until now. … (funda kabanzi)

Windows 11 Pro on Lenovo ThinkCentre. I switched to ESR a while back, when the regular and ESR versions coincided. All updates since then have worked fine, until now.

When I allow Firefox to update to 140.3.1esr from 128.14.0esr, then the Firefox browser no longer works at all. It comes up, but entering a URL (by typing or bookmark) does nothing and goes nowhere, so I can't use the internet at all.

I had to use Macrium Reflect to restore my system drive to an earlier time to get back on the internet, using version 128.14.0esr, which lost some recent bookmarks, etc. I have tried this twice, with the same result.

Now, a couple of sites no longer work because they say the browser isn't current.

What can I do about this? I hope I don't have to switch to another browser, because there are Firefox extensions I use all the time. However, I can't use a non-updatable browser indefinitely, because more sites won't work.

Can I fix this?

Thanks for your help, AnneF

Asked by Anne 14 amahora adlule

Last reply by jscher2000 - Support Volunteer 12 amahora adlule

Loading Error / Thunderbird Version 143.0.1 (64-bit)

Hi, I am experiencing an issue with adding my IONOS email accounts in Thunderbird version 143.0.1 (64-bit). I have a total of three email accounts connected to my IONOS s… (funda kabanzi)

Hi, I am experiencing an issue with adding my IONOS email accounts in Thunderbird version 143.0.1 (64-bit). I have a total of three email accounts connected to my IONOS service provider. While I have successfully added email accounts in the past using Thunderbird, I am encountering difficulties with these specific IONOS accounts. When I attempt to add my account, the process gets stuck at the 'Configuring email' stage without providing any error code. I have already contacted IONOS support, and they confirmed that the email accounts are functioning correctly on their end. Given this situation, I would appreciate any assistance you can provide to resolve this issue.

Asked by info13123 12 amahora adlule

Last reply by sfhowes 12 amahora adlule

"Unable to write email to mailbox" & "Messages could not be moved/copied because writing to folder failed"

Hello, I sent the message below last evening and someone named "Ed" replied. Thank you Ed. When I tried to "reply" to his/your question/email, I immediately got a bounce… (funda kabanzi)

Hello, I sent the message below last evening and someone named "Ed" replied. Thank you Ed. When I tried to "reply" to his/your question/email, I immediately got a bounced back email as "no-reply@support.mozilla.org" could not be found. Also, in my original question I said that I'm not "computer illiterate"; apparently I am as I don't know how to reply to his question. Please include info on how I can respond. So, I'll start all over by sending my original question:

Hello, Attached are the messages I have been receiving ever since 6 October 2025. I've tried to read about fixing these myself, to no avail. (I mean, I can Read; I just can't fix this.) I've tried to Compact ALL folders individually. But that seemed to do nothing. (Before 6 October, the Thunderbird window would at least "flicker" a little after compact.) Trash is empty. Tried disabling McAfee AntiVirus & Firewall. And, no, this isn't happening because I'm using McAfee; I've been using McAfee since Windows XP and Thunderbird since before it "broke away" from Mozilla. They have, until 6 October, played nice together. I really like Thunderbird so I do not want to find another email client/program/what-have-you. There are LOTS of saved emails that I cannot move/copy to "save space", so...Help? Please?

Thanking you in advance, tonyg

P.S.-I am not computer illiterate. But, slow, easy to follow, non-BIOS changing, step by step directions would be preferred.

Asked by Anthony G 14 amahora adlule

Last reply by christ1 12 amahora adlule

Issues with bank of america online account using Firefox

For years I have used Firefox to access my Bank of America online account. I am also using Quicken kinked to Bank of America. Today, when logged into bank of America, e… (funda kabanzi)

For years I have used Firefox to access my Bank of America online account. I am also using Quicken kinked to Bank of America. Today, when logged into bank of America, every action I take results in being sent back to the sign on screen. After clearing with Quicken Support as requested by BOA, I was directed to use a different browser which worked normally. I was told by BOA that the issue was with Firefox.

Asked by rldj 2 ezinsukwini ezidlule

Last reply by Denys 15 amahora adlule

Firefox using high memory when running multiple web tools

Hi everyone, I’ve noticed that Firefox tends to use a lot of memory when I run several browser-based tools at once — especially web calculators or dashboards that update… (funda kabanzi)

Hi everyone,

I’ve noticed that Firefox tends to use a lot of memory when I run several browser-based tools at once — especially web calculators or dashboards that update data dynamically.

For example, when I’m testing a lightweight web calculation app (something similar to a gratuity calculator that updates values in real time), Firefox memory usage slowly increases, and sometimes the browser even freezes if multiple tabs are open.

I’ve already tried:

Clearing cache and disabling extensions

Running in Safe Mode

Using hardware acceleration on/off


Still, the problem persists.

So I’d like to ask:

1. Are there any specific settings or flags that can help manage memory usage better for interactive web tools?


2. Does Firefox handle JavaScript-heavy calculations differently compared to Chromium-based browsers?


3. Any recommended performance tweaks for developers testing such tools locally?


Would really appreciate advice from anyone who’s optimized Firefox for this kind of lightweight, web-app testing.

Thanks in advance! 🙏 bold text

Asked by Steven Parker 1 usuku oludlule

Last reply by Robert Lewis 16 amahora adlule