Firefox 技術支援討論區

I have been receiving the following error code 'PR_END_OF_FILE_ERROR' on several website on my Firefox browser. Sometime, not all the time, I get the same error message while trying to use YouTube, while other times the site loads but says that I am offline and no internet connection. I have done all of the fixes that they say to use online and nothing seems to work. YouTube will occasionally work but none of the thumbnails will show up. Then there are other site that work fine.

Is there a Firefox setting that automatically clears cookies? When I turned my computer on, it had been cleared of cookies since the last time I had it on a few hours ago, but I didn't do it. No one else here to use the computer but me. I don't want cookies cleared automatically. How do I change it back to manual? I use Firefox Browser 120.0

thank you

On the Facebook desktop, the Firefox push notifications keep switching to off. I cannot see these notifications as a result, as you can see from the image where the information is blank. I have tried everything possible to fix this issue, but it remains. Any help in fixing this issue would be appreciated.

why do you stalk and bother the users? i do not want to update! without warning you alter things i do not want you to alter. you take things out so people have to use risky 3rd party addons.

My apologies if I am being a numpty, but I have been using Firefox for many years without issue, and recently (possibly after an update, but I cannot be certain), it has started to randomly freeze. I am running Ubuntu 22.04, and Firefox 119.0. I have demonstrated to myself that if I open a web page with links (but not always), and click on the link, I may still scroll up and down the page, but the mouse cursor never seemed to recognise the hotlink, and doesn't jump to it. The links will work on Chromium. I initially tried resetting the browser, thereby losing all my open pages, but that didn't work. That also removed all extensions ("all" two of them) and that didn't work. Firefox is now pretty much unusable. Any help to resolve this would be appreciated, as I cannot find any solutions online, and it seems I am not alone with this issue! Many thanks,

Firefox 120.0 on openSUSE Tumbleweed.

Google Maps (https://www.google.com/maps) results in CPU being pegged at 100%. No other tabs open. All I have to do is load the URL and do nothing else. This behavior is repeatable. CPU stays at 100% until tab is closed or browser is shut down. Sometimes the browser will hang and its PID has to be killed.

Offending process:

username 4501 4416 76 11:40 ? 00:05:13 /usr/lib64/firefox/firefox -contentproc -childID 1 -isForBrowser -prefsLen 27513 -prefMapSize 244227 -jsInitLen 228948 -parentBuildID 20231116134553 -greomni /usr/lib64/firefox/omni.ja -appomni /usr/lib64/firefox/browser/omni.ja -appDir /usr/lib64/firefox/browser {659a1e89-c5da-416d-b720-558c24187847} 4416 true tab

Foxnews.com causes Firefox 102.0.1 to freeze when scrolling pages with lots of images. Closing and restarting FF does not help. The freeze reoccurs. What does help for awhile is to delete the file places.sqlite. After that FF runs for a few hours until the problem happens again. Is there a setting or other fix for this issue?

AdBlockPlus and uBlock Origin are both installed, but are disabled on www.foxnews.com.

I have strict tracking protection turned and and i have a rule set for both https and http for bing, yahoo, and some other sites, and no matter how many times i delete their cookies from the settings menu they keep coming back and i have no idea why. I dont see a logical reasons why my extensions would be doing that

Hello, I cannot get videos to go into full screen in FF as they used to before latest update. Tested on various sites. There are no controls shown on YouTube unless i either hide the taskbar or scroll down both of which is a nuisance. On some sites the task bar stays at the bottom which it didn't used to do. link text

Dear Sir/Madam:

I am using Firefox Browser 102.15.1esr (64-bit) on a MacBook Pro Ventura 13.5.2.

I have been using the www.dictionary.com website for a long time, but recently when I attempt to go there, I keep getting the error message as follows:

Unexpected Application Error! FM.findLast is not a function

WM@https://www.dictionary.com/client.e12a2de6.js:36:305976 $o@https://www.dictionary.com/client.e12a2de6.js:1:26519 ka@https://www.dictionary.com/vendor.60d89d9a.js:1:864941 xu@https://www.dictionary.com/vendor.60d89d9a.js:1:921923 bc@https://www.dictionary.com/vendor.60d89d9a.js:1:910907 yc@https://www.dictionary.com/vendor.60d89d9a.js:1:910835 vc@https://www.dictionary.com/vendor.60d89d9a.js:1:910696 ic@https://www.dictionary.com/vendor.60d89d9a.js:1:907503 oc@https://www.dictionary.com/vendor.60d89d9a.js:1:906055 E@https://www.dictionary.com/vendor.60d89d9a.js:1:996565 P@https://www.dictionary.com/vendor.60d89d9a.js:1:997096

I tried clearing caches under Privacy & Security, but the problem persists.

(Meanwhile, I can visit www.dictionary.com on Safari and Google Chrome.)

Could you please let me know what is going on?

Thank you,

Roland

Our IT specialist at UW-Madison is stumped and suggested I reach out to Firefox. He was helping me troubleshoot why Firefox keeps saying it's sending a code to verify my account, but I never receive the code. He has added the "accounts" email to my contacts and I don't know what else to do or try. Any ideas from the community? I need my bookmarks after upgrading to Windows 11 and can't imagine trying to recreate them all.

My regular profile has deleted all saved history, tabs, bookmarks, etc. This happened before and seems related to having private browings open. and to an update in progress or recent.

Opend a private window. Then noticed regular FF wasn't opened. I opened the usual profile and all saved info is gone. Also, my stuff to be synced is way out of date so can't restore from there (I always had sync up to date). My "backup" can't be opened to restore.

Where do I find yesrterday's info? How do I restore my session, bookmarks, etc?

Last time, I tried to follow directions I found soemwhere but the instruction werent clear at all and had to restore from a disk image.

Why is there stsill the private window deleting regular window?

I recently updated to FF 119.0.1. I am finding that URL completion in the address bar is kind of random. In FF 118 and earlier, URLs were completed predictably, and it was pretty clear that they were based on a) bookmarks and b) frequency of use. Now, it seems like the frequency info is lost every time I restart FF. In that case, I might expect that the URL offered would be from the oldest bookmark or maybe the first in alphabetical order or something predictable, but it isn't. It seems to me to be random, and it is very annoying.

Is this a new bug, or is there perhaps a new setting that I can change to stop the madness?

For relevant settings, I have:

 - Provide search suggestion: checked
 - When using address bar, suggest: browsing history and bookmarks are checked, nothing else
 - I'm using Custom History settings: Remember browsing and download history is checked, Clear history when Firefox closes is checked. 

I have used these settings for years in previous versions of FF, and there hasn't been a problem until now.

Thanks!

Dear Mozilla

I'm participating in a discussion group based on Wordpress (learning.martinus.dk), and when I try to sign in (learning.martinus.dk/wp-login.php), I get the error.

>> 406 Security Incident Detected Your request was blocked. The public IP address assigned to you, by your internet provider, might be suffering from poor reputation: Look up IP reputation here. <<

My IP adr. is 80.208.65.123 and it is NOT suffering from poor reputation -- and no problem when I sign in from e.g. Chrome!

So what can I do so I can use my favorite browser here too!?  ;o)

All the best, Henrik Denmark

Firefox uses too much memory, sometimes 20GB on a 32GB Windows machine. It's usually one or two threads which are hogging incredible amounts of memory. This time I had about 30 tabs open.

Today I tried Firefox about:memory "Minimize Memory Usage" several times, and it was largely ineffective.

I did a "create memory dump file" of one 5+GB bloated thread using task manager, but can't find a way to upload the compressed archive with this report for analysis. Finding a way to report this issue was quite a challenge. It seems most help avenues are now missing/moved, and other reports of this type of issue are "Archived".

I tried killing the 2 bloated Firefox threads and checked for tabs which might be missing or malfunctioning. Everything continued to run normally while more than 10GB of memory was returned to system use. Leaving these bloated threads overnight doesn't improve anything, in fact I can often get up and find my machine is completely out of memory because Firefox consumed it all. My smallest machines have 16GB RAM.

These memory issues aren't new. I've been reporting them off and on for more than a decade. They get better for a few months after reporting, then they get bad again in a few more months. The battle to get memory leaks fixed is continuous while Firefox springs more leaks.

I'd like to give you the memory image I generated so you'll at least have some real data to look at and analyze for this report.

The attached task manager snapshot image is a very minor example of this issue. The numbers keep increasing like there are one or more large memory leaks.

I often drag elements on trello.com. Whenever I drag an element, that element seems to double in size, making it hard to see what is underneath. Attached is an example.

I believe this is related to the fact that I am running Linux/X11 and my DPR is 2. From about:support:

• Window Device Pixel Ratios 2,2,2,2
• Window Protocol x11
• OS Linux 6.1.0-13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.55-1 (2023-09-29)

Is there an about:config setting or anything that will prevent scaling dragged elements?

Hello, I always use Firefox logged into my Mozilla account.

Yesterday I went to a (legitimate) site, that I had never visited before and only read one page. I didn't click on anything on that site/page, I only read that one page and left the site. Not long afterwards, I received a promotional email from that site stating "Thanks for stopping by!".

My question is: how did they know my email (the email used by my Mozilla account)? I have never received emails from that site, and as I said, I never visited it until then.

Does Firefox expose the Mozilla account email when visiting sites? This is pretty troubling. I would appreciate any input you have. Thanks