Firefox Support Forum

Hope someone can help.

When I use full screen for some websites, it darkens after about 2 - 5 seconds and my cursor also becomes harder to move. This only started to happen recently.

It is not my computer settings, I've tested this in Safari and it works normally. This makes videos unwatchable. It is like a dark screen suddenly appears over the video and only comes off if i move the cursor. It happens with netflix and prime but not youtube, udemy.

(SECOND occurrence of this problem; not sure HOW previous instance resolved - my short-term memory ISN'T the best at present!)

Have taken all recommended steps short of completely refreshing (renamed a file titled 'config.json.old' as it was the ONLY one with a 'json' filepath suffix) because I don't want to have to relocate (another) existing session / configured profile by trial & error if avoidable - 'cookies' were removed along with history / cache cleared; reset / deleted related browser registry entries as directed, activated ' Troubleshooting / Safe Mode' contingency and STILL can't download anything (additionally, tried to do so with and without limited-time Malwarebytes web protections).....want to CONTINUE using Version 95 because by ALL indications and from what I'm seeing in Comments, my instincts about newer ones - were sound, WELL-informed.....please advise ASAP? Thanks!

Hi Mozilla Community,

As of a couple of days ago, I've had trouble with my Firefox Extensions. The most apparent one being ads appearing on the sites I browse (I have the Adblock extension installed and active). The extension that reveals the "dislike" ratio on Youtube only works if I disable and then enable the extension, for each video I watch. My entire extensions toolbar seems faulty as well.

I've attached images to illustrate: - Rakuten just appears as a blank box upon clicking it - Video downloader extensions just appear as a white line (doesn't open at all) - Bitwarden (password manager) says "not available in private mode", even though I'm not using a private window

Any help would be greatly appreciated. Thanks, Matt

My Firefox bookmark menus are often taller than my screen.

When I select a bookmark well down in the current menu by typing a letter, for example "T", the menu display scrolls down to the first matching choice, but that choice can be mostly covered by the down-caret indicating more choices further down. I can see the top of the highlight for the current choice, but I can't read the text of the choice.

Not a big deal, but I'm hoping it's an easy fix. Thank you!

On this site: https://www.orange.pl/twojekonto/zaloguj I can't force firefox to remember username (no problem with remembering password on next step). In older Firefox without WebEx there was addon which allowed to manipulate forms to prepare proper autocompletion data. This addon is not supported with WebEx anymore due to lack of proper functions. Instead Firefox Dev Team claims that mechanism built in current Firefox is enough for such tasks and mentioned addons are not needed. Seems it is wrong thinking.

I tried different approaches to save username for mentioned site but without success.

Credit Union of Denver has an alert that Firefox may impede access to accounts, and it has been this way for over three weeks. When I try to login I get the notice "Security Code Mismatch." No other browser has this problem. Is anything being done to fix this well-known problem?

Greetings. I can't open most sites I usually visit (even google.com) via my Firefox 98.0a1. This happens since today. All error codes are SEC_ERROR_LIBRARY_FAILURE.

Tried to:

• Disable DNS-over-HTTPS.
• Disable HTTP/3.
• Disable proxy (never had it enabled anyway).
• Disable sending info to Firefox developers.
• Change settings of DNS-over-HTTPS.
• Restart the browser (after each action).

Nothing helps me... But I still can visit some websites, but most common resources are not working for me. Please help me because I can't use Microsoft Edge without getting mentally ill. :/

I have been unable to figure out how I've managed to make my addons no work properly.

I've tried running them in debug mode, but I'm not particularly adept in debugging addons.

I've reset Firefox back to default a few times, addons seem okay, and then as soon as my Firefox account syncs and installs my installed addons they go back to wonky.

I can't seem to attach images RN, Firefox (Nightly) crashes every time I click on the button.

The behavior can be described as the addons when clicked have a blank page as their contents, and some addons (Like Dark Reader) just have like a sliver of a drop down with no contents.

If you'd like me to grab some debug data from wherever just let me know.

Firefox tabs crash repeatedly for a particular email website that I am using. Specifically, the tab crashes when I click on an link to open an email and see the email contents. The tab will not crash every single time, just occasionally (i.e. sometimes I am able to read an email without the tab crashing, other times not). I do not think that the timing of the crashing has anything to do with the email contents (e.g. length, format). I also do not think that the tab crashing issue is happening for any other websites. The crashing started recently, sometime late December.

I installed the latest version of Firefox, and I cleared the web cache, but nothing has changed.

Any suggestions?

Hi all,

Since I switched to Win 10 Firefox constantly crash on my computer.

• Tried fresh install no change
• Tried repair no change
• Switched off extension and then on (one by one) no change
• Deleted cache - History - etc .. :( it worked for only a few days since I did a full scan with Microsoft Defender.
• Since this last crash (as I could not launch Firefox anymore I used shift + click on Mozilla shortcut)I decided to switch off the graphic card acceleration and all the other option in this menu and it seems to help

Could you tell me how to send you the crash report ( I do have 8-10 of them already sent to Mozilla)

OK, this is a little funny. It used to be, if I wanted to open a website, I just clicked on the URL, and Firefox would open with it. Now (and I'm using 95.0.2 on iMac Big Sur), when I click on the the URL NOTHING HAPPENS if a Firefox window isn't already open. That is, you have to have a Firefox window already open in order for the website to appear. For example, in the Bookmark library, if a Firefox window isn't already open, clicking on a website there won't open it. You need to right click it and select OPEN. Now, Firefox is selected already as the default browser for the system.

How do I fix this? I mean, how do I get it back the way it used to be?

Hello. Im new to the Mozilla Support community

I am running a Japanese Windows XP SP3 on VMWare Workstation 16, i have downloaded a old version of firefox, due to newer versions not working on xp

And heres the issue: Firefox keeps opening tabs randomly which are related to pornographic websites like xxnx, pornhub, evilangel n' etc..

Heres things ive tried, but didnt work: -Install tdsskiller & scan -Scan with Avast Antivirus -Uninstalling Firefox and delete registry entries -Getting IE8 or G**gle Chr*me for Windows XP SP3

Any way to resolve this problem? i can't watch these things!

I usually have Firefox open for 8 hours a day (open Firefox in the morning and close it in the afternoon). About once a week I'll notice that at some point during the day Firefox will just stop loading new websites. Existing sites will continue to function, and requests to those existing domains work. But new sites, that I didn't already have open, won't load at all; the tab will just sit there, thinking indefinitely (no errors).

When it does this I will try microsoft.com or google.com to check and make sure it isn't just the site, but those won't load either. I'll try it with a Private Window as well to the same effect (private window has no extensions enabled). Chrome/Edge still work fine during this. In order to get Firefox working again, I have to close Firefox and then usually force quit the process instances (or wait a long time for it to reopen on its own). Once reopened everything is back to normal and all sites load as normal.

I think this happens when Firefox loads a new update in the background. I've noticed on more than one occasion this behavior has coincided with a new Firefox version. In fact it just did it again (prompting this post) and when I got Firefox back open again it had a new update tab displayed. So I'm fairly sure it is the background updates causing this.

This behavior has been happening for a very long time. At least 6 months. Across many Firefox updates.

I have a separate Firefox profile that I load using a separate shortcut (with the -P property). When this behavior happens it often impacts both instances of Firefox. Not sure if this bug is related to having multiple profiles or not.

Windows 10 64-bit

I have stated this issue once before after trying to find a solution by myself.

My query: https://support.mozilla.org/en-US/questions/1363376

Whenever I boot up my laptop, firefox starts running in the background taking up a lot of memory space and cpu utilization. I have been with ffirefox since I started using laptops which is 7-8 years back. I never thought of switching browser or finding an alternative of firefox until for some months the issue is occurring. Now I am really annoyed to open up task manager every time and close firefox which is running in the backgroud. I have seen nothing unusual in the "about:performance" tab of firefox.

Please help me to continue my journey with firefox.

Can you put one of those hourglass "wait" symbols to show on the next update because I never know if Firefox has booted or not and if you hit it again, it corrupts the next boot and wastes a bunch of time.

Can someone help me fix recent frequent crashes ? This is just yesterday. I tried troubleshooting mode and it didn't happen there, although I didnt give it a long trial. I deleted all extensions, and I reset Firefox. Any ideas?

bp-78bbf7fb-3f18-46e1-94de-d905c0211101 10/31/21, 9:41 PM View bp-5cb5b831-449e-4322-9a9e-710180211031 10/31/21, 2:25 PM View bp-3ebfce66-105b-4e4b-83ec-7c8ff0211031 10/31/21, 2:25 PM View bp-8bdc92ef-03bf-49ad-945d-5afe50211031 10/31/21, 2:25 PM View bp-45918706-804f-4603-9671-97c4a0211031 10/31/21, 2:25 PM View bp-09f0ab0d-e132-4ada-bb22-7dd640211031 10/31/21, 2:25 PM View bp-8cc2a647-4aac-4b06-8747-a181f0211031 10/31/21, 2:25 PM View bp-07df9cae-d45a-4ce2-944c-c123e0211031 10/31/21, 2:25 PM View bp-9cca543f-1c82-4fe9-979b-56a5f0211031 10/31/21, 2:25 PM View bp-0b0f8e3f-6592-4ea4-9d23-179040211031 10/31/21, 2:25 PM View bp-1175d7ce-ab80-4b6e-8dad-90cc50211031 10/31/21, 2:25 PM View bp-c5f88f0d-0419-44da-b058-fc7580211031 10/31/21, 2:24 PM View bp-73f726b5-cc90-474e-b7ac-e44df0211031 10/31/21, 12:20 AM View bp-deaea811-9e7a-409c-9eda-aa9600211030 10/30/21, 9:51 AM View bp-d045b5e5-b53d-43a7-8e06-1592c0201127

As the title says, I cannot get MP4 files to play in Firefox, which renders several websites unusable. These sites work in Edge just fine, but I cannot get them to work in my preferred browser. Everything is up to date, and I have all the codecs I could ever need installed, as well as the Windows N Media Feature Pack. The browser has been tested several times in troubleshooting mode, and I've even gone as far as running Windows in safe mode with networking to try to isolate the issue. I cannot get it to work at all. This is the 2nd device I've had this issue on, and it's driving me up a wall.

Any help or advice would be greatly appreciated.

Firefox 103.0 (64-bit) Windows 10 Pro N 21H2 19044.1865

Hi.I would like to know how i can stop this site from constantley trying to connect with my P.C.luckeley my firewall stops it but eventully they will succeed.Iplayed it a long time ago.I stopt,deleted my account but they keep attacing several times a day.I,ll be gratefull with any help\advise about this.i tryed acsessing the page sourse and i think i,ve only made it worse.