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My current version of Firefox is 151.0.4 (64-bit) & for the past 2 weeks or so every time I use the search bar to google something it triggers one of those "We've detected unusual activity from your network" requiring a Captcha. At first I tried all of the typical stuff [antivirus, vpn, extensions, etc...] to make sure that wasn't the issue. But as of yesterday & confirmed today I can actually go to Google's website first & do the search from there with no issue & no captcha.

So, whatever the issue is has to do specifically with doing the search via the search bar... for some reason. Is this a bug in the browser, or is there perhaps some setting that could cause this to happen in the about:config page? Though, I doubt a setting could be it because I've changed the settings I've changed now for years without causing this issue.

To be honest. Firefox is starting to be a big pain to use. I'm starting to see more and more of this screen where it say's "Be careful. Something doesn't look right" Even when i go to the advance and say proceed. Nothing happens and i'm getting no where. I know many of the sites don't have anything to do with asking for credit card, Scam or even having popup's. I test the sites in other browsers and there work without any issues. But Firefox is starting to lock me out of many sites due to this. How can i make this stop. As i used Firefox for many years.

The sample that is in the screenshot is a Anime data base that i have also used for years. But today shows this. But was working fine yesteday. What is going on and how can i fix it. So i can start using the browser that i love on the sites i want to.

Hello!

I have the "Block AI Features" setting enabled, but I'm still getting the "Ask Gemini" option in the long-hold context menu for Firefox Mobile on Android.

Is there any way to remove this option? It's cluttering the context menu and I dont want to misclick it. Or otherwise, is this a known and tracked issue?

Since 3rd September 2026 Thunderbird opens a system integration window and then goes to not responding. I cannot access my emails through this software at all at the moment as there's no way past his pop up. Version 153.1.1, Windows 11 Home.

Suddenly since Friday 21.08.2026 morning every single person in our company started to call the IT department that their Thunderbird client is printing out blank pages (white pages) instead of attachments from emails.

What is happening -> Employee gets email with PDF attachment -> clicks to open it in thunderbird print preview -> prints -> blank page comes out.

What works -> Downloading the PDF and printing it. Opening the PDF in any other browser than Thunderbird and printing it.

No settings or updates were changed and it's a big issue affecting multiple computers.

What I tried doing -> Trying different printer (No fix), Resetting print settings in thunderbird (No fix). Trying other PDF attachments from older emails (No fix). Looking at print settings in windows (Which I didn't change since it only doesnt work in Thunderbird).

Problem is that on thunderbird in my office, This doesn't happen. We have the same versions and settings.

I tried opening the error console while opening the PDF and on computers where it doesnt work it shows me an error with along the lines of "This document is open in compability mode due to **** header <doctype html>" Something like that but i would have to check again.

I don't get this error on my personal PC.

For years I have been using Thunderbird and supporting with donations and one of the important uses is being able to preview .pdf files and then quickly highlight and copy information from the pdf such as an invoice number so I can paste it into another document.

Now I can not do this - Why?

I am running 154.0 (64-bit) on Windows 11 - not that this should matter - clearly the issue is the update has chanced how .pdf's can be accessed.

Other issue is printing the pdf only prints a blank page

Incredibly frustrating - what is the issue and how do I fix it?

Здравствуйте. Я установил сертификаты по инструкции, которая лежит на s.sber.ru/70VQ2B . После этого в мозилле не прогружается полностью окно входа на online.sberbank.ru, не видно содержимого фреймов (сейчас попробую сделать скриншот). В Microsoft Edge работа нормальная. Удаление сертификатов, перезапуск браузера и компьютера не помогли. На других компьютерах ещё не проверял. Посоветуйте, пожалуйста, что можно сделать. Windows 10, Firefox 153.0.3 (64-разрядный).

Due to muscle menu or not needing to think about it. Split should either be near the bottom of the context menu or you should be able to toggle it in settings. The amount of times I have gone to click a link to open in a new window only to split the view is driving me crazy.

Starting today (September 3), ALL of my received emails are being put into the Spam folder instead of the Inbox.

FYI, I have been running Thunderbird (TB) for years and have not recently set up any new filters.

I'm currently running Thunderbird 64-bit version 155.0 under Windows 11 Home version 25H2. I am also running Bitdefender Total Security, but I have turned off its Antispam function, both under my usual Standard User account and the Admin account.

I have tried:

1. Going into TB Settings|Privacy & Security|Spam and clicking on "Reset Training Data." 2. After closing TB, I deleted the training.dat file in my TB profile folder and restarted TB. 3. Right-clicked on my Inbox and Spam folders and clicked on "Repair Folder." 4. Exited TB, copied my profile folder to an external HD, uninstalled TB and reinstalled TB after downloading from the official download site. 5. Rebooted my PC.

None of these approaches has worked to solve my problem.

Thanks for any help you can give.

When I try to make a Google search I get the following message, "I'm not a robot" with a reCAPTCHA: "Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot. Why did this happen?". This happens on Firefox, but not Chrome or Edge. I have scanned with Malwarebytes, Bitdefender, Hitman Pro, Trend Micro House Call and Microsoft Defender, nothing detected. Running Win 10 (64) with 'Extended Security Updates', Firefox 152.0.3 (64), no additional Extensions or Plugins, no VPN and have run through the troubleshooting suggestions. Also I uninstalled and reinstalled Firefox. Note: currently I do have extensions installed, previously I did not, however with or without the problem exists Attached screenshots

I installed Thunderbird on my new laptop, then imported the profile from my old laptop

The main screen has, under "Inbox", folders for Drafts, Sent, Trash, Archive and Spam, which are being used by the program

Folders for Drafts, Sent and Trash also appear under "Local Folders" (along with Outbox) and these aren't being used by the program.

How do I get rid of these duplicate folders? "Spam" had a delete option, so that was easy, but the others don't.

I tried the two suggestions for a previous "Duplicates" question but they didn't resolve things.

Thank you

Every time I start Firefox lately, it keeps prompting me: "You must log in to this network before you can access the Internet." I have no idea what this means and have no problem accessing the Internet in any case. What suddenly started causing this !#@%$ message and how do I turn it off?

I downloaded the version on the site but I can't get it to accept my password all I get each time is this at the top of the box

Component returned failure code: 0x804b000a (NS_ERROR_MALFORMED_URI) [nsIIOService.newURI]

Just how am I supposed to understand what that means. I would be grateful for any help you can give I've been using Thunderbird for over 25 years without any problems, I had to reinstall Windows and now I've got this problem.

Logged into Thunderbird this morning. On current version. Noticed that the local trash folder had emails in it. I have not changed any of the multiple account setting. Send some test emails fro 2 accounts and they ended up in the local folder trash. What has happened. I want this redirection to stop. What other demons have been created by the current update. HOW CAN i fix this problem?

When I try to print a PDF attachment it comes out as a blank sheet. This used to work OK. The print preview is fine. I have altered the settings to open PDFs in acrobat as a workaround. Any help appreciated.

Wenn ich im Suchfeld etwas eingebe, kommt immer dieser Fehlercode und ich müsse mich an den Administrator der Webseite melden. Obwohl ich sämtliche Virenprogramme verwendet habe und den PC mehrmals runter- und wieder raufgefahren habe, kommt immer wieder dieser Fehler.

Hi folks!

My Firefox just updated and I'm now receiving the recommended stories (along with the widgets and recent activity.) when I open a New Tab. I was able to disable the widgets and activity and I see the place where I can turn off the Stories, but they are not going away.

In the "Customize" menu accessible via the pencil icon on the New Tab page, toggling Stories off does not make them go away; reloading the page, the toggle is re-enabled.

In the general Settings menu, accessible via the hamburger menu and under "Home and startup," I have Stories ("Exceptional content curated by the Firefox family") toggled off. The toggle does not reset, but the stories still display.

How can I fix this? Thank you all very much in advance.

I can print e-mail, but not the attachmnet since yesterday. So I contacted HP-support, but it is not the printer. The last attachment I printed was before the last update of thunderbird. What can i do?