I-Firefox Community Forum

SYS.INFO: • OS Version: Microsoft Windows 10 Professional (x64) Version 22H2 (build 19045.6218) • Processor: Intel(R) Core(TM) i7-6700T CPU @ 2.80GHz, Intel64 Family 6 Model 94 Stepping 3, CPU Count: 8 • Total Physical RAM: 16 GB • Graphics Card: Intel(R) HD Graphics 530, 1024 MB • Hard Drives: C: 476 GB (361 GB Free); D: 664 GB (483 GB Free); P: 267 GB (80 GB Free); S: 1862 GB (1687 GB Free); T: 1863 GB (1687 GB Free); • Motherboard: HP 829E, ver KBC Version 06.29, s/n PGAXV0QNNB7EO6 • System: HP, ver HPQOEM - 0, s/n 8CG8343NN9 • Antivirus: Windows Defender, Enabled and Updated

• Windows 10 Professional (x64) Version 22H2 (build 19045.6218) • Firefox 142.0.1 (64-bit) • Thunderbird 128.10.1esr (64-bit)

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THE ISSUE: When opening Firefox, (Attachment #1 - below) appears. Seems to have nothing to do with any reality . . . as when I check in SETTINGS (Attachment #2 - below). 1. So, who's telling the truth? 2. How do I stop the popup (Attachment #1) from making it's nagging, inaccurate appearance?

Thank you / Nels

whenever i scroll trough a website in firefox, the ewperience is very laggy, feels like its 15fps. i have done basic things like disabling hardware acceleration, smooth smooth scrolling.

For a while now firefox has been unable to enter fullscreen when pressing F11. Instead all it does is move the "Scroll forwards", "Open a new tab", and "List all tabs" button over slightly (The buttons on the top right, next to the minimize and close buttons).

I don't know what's going on with firefox.

Firefox Version 142.0.1 (64-bit)

I have over 100 open tabs spread over 4 Mac desktops. I can no longer access ANY of them after upgrading to macOS Tahoe 26 and installing ESET Cyber Security Pro. I've used ESET with Firefox for many years without ANY problems. But now I have to choose between uninstalling ESET and being unprotected in order to use Firefox AT ALL. Every single webpage is blacked out with the message below. ESET support says that Firefox needs to issue an update to fix this problem.

Hello,

I am encountering an interface display issue while using the AdGuard ad blocker extension in the Firefox browser on Windows. When I try to open the "Filtering Log" feature within the extension, the pop-up window appears completely blank and fails to display any log content.

Steps to Reproduce the Issue:

1. 1 Install and enable the AdGuard extension from the official add-on store.
2. 2 Browse any website.
3. 3 Click the AdGuard icon in the Firefox toolbar.
4. 4 Click the "Filtering Log" button (the icon that looks like a list or clipboard).
5. 5 Expected Result: The filtering log window should open normally, displaying a list of blocked and allowed requests.
6. 6 Actual Result: A new window pops up. The title bar of this window displays "Mozilla Firefox," but the content inside the window is completely blank (pure white, without any text or error messages).

Additional Information:

• Firefox Version: 142.0.1 (64 bit)
• AdGuard Extension Version: 5.1.139 (TSWebExtension v3.1.0-alpha.4 TSUrlFilter v3.3.3 Scriptlets v2.1.6 ExtendedCss v2.1.1)
• Operating System: Windows 10 22H2

Other Installed Extensions:

• Immersive Translate - Translate Website & PDF | by Immersive Translate | Version 1.20.8 | https://addons.mozilla.org/en-US/firefox/addon/immersive-translate/;
• Tampermonkey | by Jan Biniok | Version 5.3.3 | https://addons.mozilla.org/en-US/firefox/addon/tampermonkey/;
• Dark Reader | by Dark Reader Ltd | Version 4.9.110 | https://addons.mozilla.org/en-US/firefox/addon/darkreader/

Troubleshooting Steps I Have Already Attempted:

• Restarted Firefox.
• Disabled and re-enabled the AdGuard extension.
• Reinstalled the AdGuard extension.
• Tried running Firefox in Safe Mode (with all extensions disabled). The issue persists, suggesting it may not be a conflict with other extensions.

This issue prevents me from using AdGuard's core debugging functionality. Thank you for your assistance.

I signed into my firefox account on my wife's computer and now ALL of her bookmarks, passwords are mixed in with my data. I've signed out of both accounts on that computer. I've signed out and relogged in on my computer. This is not a temporary issue. All of her data is somehow in my account. This seems like a MAJOR security flaw of the software. Were both using Windows 11 computers.

I recently got a new machine and loaded it with Linux Mint 21.3 - Cinnamon, FF 142.0 and Bitwarden Version: 2025.8.2 along with the usual cadre of extensions that I use on every other machine I have.

When I first start Firefox, Bitwarden autofill suggestions does not work, autofill from the "Fill" button in Bitwarden does not work and returns an error. The only thing that works is to individually and manually copy the username, paste it, then copy the password and paste it.

If I log out of Reddit and then try to log back in, the autofill suggestions works and the "Fill" button also works.

This is only on Firefox and only on the fresh start of the app. This does not occur on Chrome and I have not tried (and don't want to try) it on Windows.

Firefox is not saving my passwords. Every time I start up my laptop, all the saved passwords are gone. I have tried a refresh and a new install as well, but the problem persists. I have to sync to my other machine to restore them.

Since the newest wave of firefox updates my icons on startup are gone. When i click new tab they show up again or when restarting the page. I tried reinstalling firefox & changing icons with no help. The previous update before 141.0 had no issues. I tried searching around and didn't find anything helpful. Anyone else have this issue or know of a fix?

I am getting exhausted with Firefox changing my configurations when updating. I always turn off automatic update for all software I use. I even turn off Windows updates. These updates always break something I regularly use and offer me little if anything that improves my experience.

Recently, the update modified my configurations to allow automatic updating. So I had to turn that off. A recent update removed the simple "!gm" shortcut to Google Maps. I had to create a new shortcut for Google Maps so I could type into the URL bar something like "!gm Missouri" to get the map to display. It wasn't displaying before this and returned search results like "General Motors". Ugh.

Can't Firefox stop updating my configurations and making life difficult for me?

I joined a Microsoft Teams meeting through Firefox on the web on a Linux machine. When I tried to share my entire screen, I was asked if I wanted to share the entire screen in a Firefox pop up which I said yes. Then the "you are sharing your entire screen" came up, the sharing icon was red and the "stop sharing" button was red. See attached image. This all disappeared and reverted to the default state almost instantly.

Teams has a feature to "manage what attendees see manage what attendees see" where the meeting host can preview shared content before making it live.

I am concerned that the meeting owner was able to see my entire shared screen without me even knowing it through this preview.

Can someone help? Microsoft just sends you around in circles and I can't contact Mozilla.

getting "SYSTEM WARNING" , " McAfee license expired " , " Trojan Detected " popup notifications continually after following a link on Linked In . Windows finds no threat in its quick scan . Popups occur even when Mozilla closed .

when I go to icloud.com to view and download photos and all my icloud stuff on my phone, I can no longer sign in using firefox. I turned off the shield security but no help. There used to be a pop-up that let you enter the code apple emailed you so you could access your icloud stuff on the web. Now there is no place to enter the code they send you. I enabled pop-ups too, but that didn't work. Help! I need my photos! And I use that site pretty much constantly-