Firefox Community Forum

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to google.com because this website requires a secure connection.

What can you do about it?

google.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

In 2024-25 Microsoft Edge gained the ability to limit the usage of physical RAM that the processes uses. Once that limit is reached tabs are put to sleep or are unloaded. So a user of Microsoft Edge could restrict the memory usage to say 1GB or 2GB or 3GB and so on till the maximum available physical RAM.

Does Firefox have such an ability? Is there some flag or settings in about:config that can be enabled for a similar feature to be used? Does Firefox have ability to put tabs to sleep once SWAP is started to be used? Is there some flag or settings in about:config that can be enabled for a similar feature to be used?

If none of one of the above is not available with Firefox then will Firefox add this feature as part of the browser in the future?

In a thread discussion about the flag, "browser.tabs.unloadOnLowMemory" dated 23-Nov-2022 (https://news.ycombinator.com/item?id=33706117) it was mentioned that we've disabled tab unloading on Linux because low-memory detection just didn't work.

Has the issue been fixed? Does the low-memory detection work in Linux? Can it be enabled now?

Does it get triggered when SWAP is being used? Or when system free RAM falls say to about 25% of total physical RAM?

Why can't I go to saltlife.com when I've gone to this 333 times and ordered items from them for YEARS? Also, when I'm at Kohls.com, I cannot access a site, when shopping to access part of my shopping experience. Am I going to have to change my browser to be able to shop there? I have used Firefox for years, and up until now, I've never had this problem.

Hello... I'm running Firefox on MacOS Catalina 10.15.7 on a 2013 MacBook Pro model A1502. It's been working great, but I just updated to Firefox 147.0.4 and I'm seeing an issue that I can't seem to attribute to anything else but the update.

The issue is that when I login to websites... Amazon, Pirate Ship, Venmo, etc... the sites keep saying that I entered the incorrect password or login. I've been using the same login info for a number of months without issue. I even tried to reset and change the password, but they are not recognizing the new password. I've tried different emails... I often have multiple accounts, one for my business and one personal... but they all have the same issue.

Again, these are sites I have been going to regularly for a while, and the issue only recently started after the most recent update.

Thank you. Paras.

Since update yesterday, new tab is empty. Whatever I do, open new tab, open new window, go to `about:newtab` manually, it does not load anything. The view is totally blank. I can navigate to other pages fine as it should though. Only New Tab view is broken. Diagnostic mode does not work. I don't have plugins that would affect New Tab anyways.

All of a sudden Firefox has a popup window that asks me for my primary password whenever I try to access one of my bank accounts. I'm just used to signing in with my saved password on each bank's website. Is this something new? Is there some kind of master password that can sign in to all of my accounts? I'm concerned about security issues.

Hi, on my macbookpro. Searches take minutes to load, websites take minutes to load. Youtube takes minutes to loand, but once loaded and I start a video, it runs for a couple of minutes then video suddenly stops and I have to wait for couple of minutes for the video to continue again and it keeps repeating, all my other web browsers (Safari, Chrome, etc..) works perfectly. It also uses sFirefox is bascially unusable! I am running the latest version.

I also saw a NoScript XSS Warning:

NoScript detected a potential Cross-Site Scripting attack

from https://www.youtube.com to https://accounts.google.com.

Suspicious data:

Error: Timeout! DOS attack attempt?,(URL) https://accounts.google.com/ServiceLogin?service=youtube&uilel=3&passive=true&continue=https://www.youtube.com/signin?action_handle_signin=true&app=desktop&hl=en&next=%2Fsignin_passive&feature=passive&hl=en

My bookmarks have disappeared from view, even though I have I recently got this note at the top of Firefox: "For quick access, place your bookmarks here on the bookmarks toolbar. Manage bookmarks..."

On clicking on the "Manage bookmarks" link, I'm taken to a page with several fields, including "Location". I can not get any of the selections to work.

I did not ask for this change. I just want to be able to view my bookmarks. Can anyone guide me? Thanks.

There is a stuttering when i browsing, i do a lot of switching tabs when browsing. The stutter occurs at about every 15 sec, the browser like stopped for half a second, doesn't much but annoying. I cant scrolling, it stopped showing next alphabet when im typing, but still registered what im typing. but when playing videos on youtube the videos is not affected. i do running adblock ublock origin, i tried to switch it off, but it doesnt much affect my laptop performance, and the stuttering still there. i have also have tried doing gfx.webrender.layer-compositor set to true on about:config

Every day, I get the same reminders about new Firefox features. Every day, there's one about tab groups. I get daily reminders to sync my bookmarks. I do not need this every single day.

How do we turn off the reminders? Why do they not stop appearing after an update, the way they normally do?

Thanks!

Firefox 147.0.4 on macOS 26.3 does not work via SOCKS proxy.

Firefox 147.0.4 on Windows 11 x64 works fine via the same intranet SOCKS proxy, with exactly the same settings.

The advantage of Firefox is its flexibility. It supports its own SOCKS proxy settings, independent of systems-wide ones. Unfortunately, it seems this Firefox feature is broken on macOS (but Windows version works perfectly).

Safari 26.3 (21623.2.7.11.6) and DuckDuckGo 1.177.0 (625) web-browsers that use system-wide macOS SOCKS proxy settings also works fine with this intranet proxy server. So it seems SOCKS proxy server itself is OK, and the problem is confined to Firefox on macOS.

Has anyone seen Firefox 147 on macOS work via SOCKS proxy? Is there a principal difference between how Firefox handles SOCKS proxy on macOS vs. Windows? What might be the best way to address the problem on macOS?

Thanks!

I am only able to shut off these new tones Firefox makes in Windows 11 Volume control center by muting Firefox. Then if I do, I am forced to return to that button to unmute if I want to listen to a YouTube video etc.

I've never had this issue with Firefox until 2026. I'd like to find a setting within the Firefox Settings, but there is nothing. No other browser does this. Only Firefix.

It's annoying. I'm going to have to start putting Firefox aside and stop using it. It's too much of a nuisance.

Firefox has no customer support. Only a Community Forum. So, I don't think they'll miss me.