Firefox コミュニティフォーラム

Our Firefox sometimes stalls, and if we try to exit, to start fresh, it won't reopen, because there is a firefox process still running. The click to close Firefox has no effect on this background process. Taskmaster sometimes shows firefox processes, which can be closed, but that doesn't get everything. Sometimes a total hard shutdown resolves it.

Starting 4 or 5 days ago when entering https://bluehost.com in the URL field, the landing page for Bluehost stopped rendering properly. I cleared ALL browsing data without fixing the problem. Trying to open Bluehost in a private window did not fix the problem. Only opening Firefox in Safe mode solved the problem. After opening in Safe mode, I disabled performance enhancement including hardware acceleration - problem not fixed. The Bluehost landing page renders properly in Chrome, Edge and Opera.

So the options are Block, Allow for Session, and Allow. Block and Allow are obvious; Allow for Session not so much. If multiple windows are used on same website at the same time, is each window a Session or are they all covered for the duration of that specific session? If Allow for Session, will they have access to what goes on only when Session is happening, or will they be updated with ensuing traffic the next time I open a Session? TIA, KBo

This morning Firefox stopped working for every website I attempted to access. The window shows the "Unable to connect" error. I'm currently using Edge for the Mozilla site help pages. I've tried many of the help article procedures, including: 1) Removed and re-added Firefox in the Windows Defender Firewall settings; 2) Scanned PC for Malware (Webroot SecureAnywhere, CE25.1), no threats detected; 3) Cleared recent history from Firefox. 4) Opened Firefox in Troubleshooting Mode but the problem persists. 5) I've also set the Network settings to "no proxy". Windows settings is set to automatically detect settings Firefox was working last night when I was installing an old version of Quicken 2015 (off-line/non-network installation). What's my next step?

Every time I close Mozilla, my settings change from "Show Search Suggestions" on to off. I have no idea why it turns off automatically.

Context: I do have Betterfox installed which could be causing issues. If it is, what setting could I change?

About once a minute or more Firefox lag by 10-15 seconds before showing a character or characters I have typed.

It seems to be using a lot RAM. I have one window open with six tabs, including this one, and it is using nearly 8GB. There are 48 processes showing in Activity monitor.

I am using version 135 on a Mac Book Pro running MacOS 15.3 (Sequoia).

It is almost unusable.

I have gone into about:config and changed all the telemetry entries et al to false to prevent as much datareporting as possible - what I want to do is prevent Firefox (135) from creating the 'datareprting' folder in my profile folder. I delete it every time I go into Firefox, which is an everyday pain because it returns with EVERY new session. I delete it 1. because they don't need it, and 2. more importantly, firefox is NOTICEABLY faster once it is deleted. People have been asking this since like FF 40. Can anyone solve this?

I am on a Mac desktop running Ventura 13.7.3 and running Firefox 135 with extension of Ghostery, Privacy Badger, Google Don't Track Me, Facebook Container, FoxClocks and SoftGreenLeaves theme. All of these extensions have been playing nicely with each other for a long time.

Recently I've been having trouble recently with Firefox doing that thing of suddenly freezing/producing multiple windows and I need to refresh in order to get it working properly again. This has happened three times in the last five days - so frequently that I now keep the refresh instructions on my desktop. Today I heard the CPU grinding and clicked open my Activity Monitor to see four listings of 'FirefoxCP Isolated Web Content' running all of them using in excess of 2Gb. Unfortunately I wasn't able to get a screenshot of the Activity Monitor while this was going on as I had the Mac force quite Firefox and the moment I did, the activity stopped, but I've attached an example of the Activity Monitor showing still high CPU values for a few moments of browsing.

So what's up? How can I stop the CPU grab? How can I stop the frequent crashing?

There is a similar (but not identical) topic on Mozilla Connect , and I posted there. But I did not get a response. So I am re-posting on this new topic on Mozilla Support. I have a similar problem to what was discussed on Connect. I am using Firefox 133.0.3 on Windows 10 Professional. After Firefox has been running for a while, I get a message from Windows 10 that the free space on my C:drive is low. I did a directory listing on my C-drive before and after Exiting Firefox; I saw no large files disappearing. Then I decided to do "dir c:\ /ah" to see hidden files. What I saw was that pagefile.sys decreased in size from 29,925,748,736 to 16,270,770,176. This was a decrease of 13.7 Gb. Is this normal? I have lots of windows and tabs open in Firefox. Thanks.

If Mozilla is going to add an annoying left side scroll bar they should also include a facility to disable it. I don't use the right side scroll bar, I certainly don't need another not to use. Besides it interferes with some websites....

Help

I followed the instructions to install flatpak and then firefox (from the Mozilla pages) and got to the end, but Firefox was not not the path. There was a shell script in/home/edg/.local/share/flatpak/app/org.mozilla.firefox/x86_64/stable/869b4e0279ab4475432b2930ae5d583b7a0e00bac1078b8848d163820a152fa5/files/bin/firefox but it led to /app/lib/firefox/firefox. The /app directory doesn't exist.

Not sure what is wrong.