I-Firefox Community Forum

Hi Can you please help i have tried everything to get rid of this message i have uninstalled and reinstalled i have constantly refreshed and nothing helps,I get the message The bookmarks and history system will not be functional because one of firefoxs files is in use by another application also for quick access place your bookmarks here on the bookmark toolbar. I am not very technical but it is driving me mad please fix this for me Thanks

Over the past several days, Firefox has been randomly shutting down. When reopened, my previous tabs have disappeared. While setting up my laptop on a docking station today, I had to reboot several times. Every time it reopened my previously opened tabs are gone. Yes, I have Settings set to re-open Firefox with previously opened tabs. It has worked beautifully for me for years. Does anyone know what is going on? What I can do?

only one email kinda working now - [email 1 removed]@wolfgangforge.com (have 3 accounts total). i cannot even be sure you are getting my emails or that i am receiving any replies. when i close down ff and re-start, the email tab is gone and i must type in "https://sm1.toast.net/interface/root#/email" and login to get it running again. my most important email, [email 2 removed]@wolfgangforge.com is not. this folder has my business tabs (using the Simple Tabs add-on in ms windows 11) - about 700 tabs and about 30 groups. losing all this info would be a major disaster! it is like FF is installing for the first time and cannot find the Profiles folder. i've attached a screenshot to show the folder where the Profiles are presently kept.

***-- i need to get back my ff as it was last friday.

i looked at the session-restore, but it appears that only goes back to the immediately previous session and since that one was fouled-up also, i can't see how that would help. wolfgang 503-475-3563

Today: DevTools crashed many times, and I’m facing unusual issues. I cannot call through Messenger and cannot connect for video calls. Also, DevTools is not working, even though Firefox Developer Edition is quite good and healthy. Even Firefox is not working well. Please fix this issue quickly.

OLD ISSUE

My Firefox is using a lot of data; I don’t know why.

I am not using Firefox, and it is not running in the background, yet it is always using the internet. So what do I need to do in this situation? I tried to stop the internet connection using outbound rules, but it did not work. It is still using the internet. What is the reason my browser has high data usage? I have high data usage; in fact, in the past 12 days, we've used 30+ GB of data.

Tabs crashing seems to be becoming more frequent. Also I use an online forum when wanting to post a reply I cant see the options for Font size, colour, emoji's etc

So, after using firefox in the background to browse websites or watch videos I checked my memory usage in firefox with about:memory -> Measure and saw that youtube was consuming a decent amount >2GB (checked the main url when clicking the youtube src, it was the video on that sole tab i was watching and nothing else playing youtube in the bg) so i closed that tab, waited a bit and re-measured but then see that the memory usage for youtube rose about 200MB... and the website for youtube is that same url for the tab that i just closed (when checking the src in the results for Measure). I've been revisiting the about:memory page, reloaded it and re-Measured and youtube is STILL THERE. Even now, 10 minutes later i still see youtube there, with none of my tabs running youtube.

If i close firefox entirely and re-open my tabs then it'll very likely fix it but this has to be a major issue no? I shouldn't have to close the entire browser program just to fix a website visit, which is youtube of all websites.

As of this moment, firefox, with 8 tabs open, is consuming 4,452.99MB (~4.5GB) where 2.5GB is youtube for that page i closed.

I don't know if sharing memory reports from the about:memory page give my cookies away or leave me open to a similar vulnerability so I won't share it unless a dev or similar asks for it but for now, I've included an image showing all the tabs i have open on firefox, 2 windows.

I have two Firefox tabs open on my browser. Task manager shows 35 tabs using 897 MB of memory. How do I make this stop? And why are so many tabs running? I have cleared cache, cookies, etc.

For the past several weeks I have been having issues where some parts of websites don't load like on Twitch and amazon, and YouTube videos are choppy and pause playback frequently. I have a 7800 X3D CPU, 32 GB of DDR5, and gigabit Ethernet so its not a problem with outdated hardware. I also reinstalled the newest drivers twice, updated my bios, updated Windows, and reset my router so I'm not really sure whats causing the problem. I tested twitch and youtube on Edge and the issues are kinda there but considerably better. I was having similar issues on youtube several months ago when I was using opera, so I switched to firefox and it seemed to fix the problem until now.

For the past few days, I haven't been able to use Google Lens for searches. Why? It used to work, and I haven't changed anything on my computer.

I read the support article about this problem: everything seems fine, Google is definitely my search engine... Can you tell me what I need to do to get it working again? Thank you

[edited email from public community support forum]

Hi,

Not sure if anyone else is reporting this but ever since the last update - 140.0.2 Firefox Release, June 27, 2025 - many of my general sites, yahoo, news, company sites that I use everyday, do not load. I have to use Private Browsing, keep refreshing or change URL for the site to load. Anywhooos, I do appreciate you guys! keep it up!

I need to know why Mozilla is hijacking my VPN. I only have BitdefenderVPN, which I no longer use, and ExpressVPN, which is what I now use. Today when I connect through Firefox, MozillaVPN keeps shutting down my ExpressVPN and opening itself. I have a tug-of-war between the two, even though I did not subscribe to nor install MozillaVPN. I believe this happened after the latest Firefox update. Any ideas? I run Windows 11 64-bit, which seems not to play well with LOTS of programs, include some browser extensions.

My very favorite browser will not open when I click the FF icon. I did another download and it will not open, as well. What can you tell me about this issue and how to fix it? An avid user for many years.

Loren Donaldson

I just installed Firefox. What I noticed right away while using it was that fonts were very blurry/hard to read on all web pages, and even in firefox's menus and URL bar.

I attached two pictures, one is a screenshot in Firefox, and the other is a screenshot in Brave. (All chromium web browsers I have tried don't have firefox's font problem)

MB is telling me to put MB on Firefox! BUT, I already have MB on Firefox. Can you help me.

Thank you,

Tom Klima [edited email from public forum]

I have Windows 11 operating system on my Laptop, but when I order merchandise online via Paypal, I get notification stating my device was recognized and was using Windows 10! I don't understand why this is happening. How do I fix this?