Diễn đàn hỗ trợ Firefox

Firefox stopped working today. Every time I launch it, it responds with: "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."

I launched Task Manager and killed the active processes, relaunched ff - did not resolve the issue.

I have uninstalled and reinstalled ff multiple times - did not resolve the issue.

I have removed the lock as per here: https://support.mozilla.org/en-US/kb/firefox-already-running-not-responding#:~:text=Right%2Dclick%20on%20an%20empty,it)%20and%20click%20End%20Process.

I have verified the access rights as per here: https://www.minitool.com/news/fix-firefox-is-already-running-but-is-not-responding.html

I have completely removed all the mozilla entries from both Program Files AND in the registry, then reinstalled. did not resolve the issue. registry instructions from here: https://www.reddit.com/r/firefox/comments/s9lguc/how_to_completely_uninstall_firefox/

I have tried to delete existing profiles AND create a new profile but I always get an error: "An unexpected error has prevented your changes from being saved." https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles#w_start-the-profile-manager-when-firefox-is-closed

I'm out of things to try. Hate to abandon Firefox but I'm at the end of my capabilities.

checking box within a Tab on yahoo mail will immediately open that entry and then freeze further operation until the screen is shut down. This happens on my wife's HP lap top i5 Pavilion 4.00 ram. ie: inbox tab will show a number of email - a dozen or so - followed by grey empty areas. The tab indicates 100+ total in inbox. Selecting one box opens the email but locks up any activity on that email & must be shut down to exit. The identical situation happens when I access my email on her machine. She is using Firefox 105.0.1 HOWEVER, on my machine, HP desktop AMD A8 8.00 Ram, both email addresses do not lock up, multiple boxes can be checked and work as expected. My desk top uses Firefox 104.4 This began happening within the past couple of weeks and I can not debug the situation. Any pointers ??

I installed mozilla today and I looked in to my settings and found this message "Your browser is being managed by your organization."

I am not part of any organization since this is my home pc.

I checked the forums but i couldn't solve this.

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox and HKEY_CURRENT_USER\SOFTWARE\Policies\Mozilla\Firefox doesn't exist for me and i don't use avast.

On about:policies it shows "Certificates-ImportEnterpriseRoots-true"

What is this ImportEnterpriseRoots thing?

I'm using a laptop with windows 11.

Can anyone help?

I just made the switch from Chrome to Firefox, and I'm still trying to understand the small differences that exist between the 2 browsers.

While on Twitter, what I usually do is middle-click with my mouse on a Tweet to a new tab that I want to look into later, then continue scrolling down my timeline, then check out the Tweets I opened in the new tab(s). However, when I try to do the same thing on Firefox, it automatically opens the new tab. Because of how Twitter works, this also reloads the Home page when I opened it up, so I just lose anything I was just looking at when I opened the Tweet in a new tab.

What can I do differently here?

Hello,

i have a problem with Rightmove.co.uk webpages. On the webpage where you can see house plans, I zoom into the plan, and the plan just cannot be moved anymore and zoomed as well. I entered Firefox in troubleshooting mode without any extensions enabled and the same issue happened still. I tested the Brave and Chrome, no problems there. I tested Firefox latest version and also the ESR version, both had the same issue. One of the webpage links is below that just freezes, but the same issue happens with all sites when you want to see house plans. https://www.rightmove.co.uk/properties/125021075#/floorplan?activePlan=1&channel=RES_BUY Please help me.

Thank you. itaavo

I'm trying to watch videos in Firefox. Youtube works but Xvideos does not. Firefox pops up a window asking me:

>> "Opening xvideos"."com ###.mp4". >> which is: MP4 Video (16.4MB) >> from https://cdn77-vid.xvideos-cdn"."com >> >> What should Firefox do with this file?

My only choice is: Open with Windows Media Player x86 (default)

suggestions?

I'm running Windows 7 Firefox 76.0.1

Thanks!!!!

Can't connect with the just downloaded version 66.0.4 to virtually any site - not to Google, not to NYT, not even to Mozilla - Firefox won't accept ANY certificate! Following errors appear (examples): "Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to addons.cdn.mozilla.net because this web site requires a secure connection. What can you do about it? addons.cdn.mozilla.net 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 web site, and there is nothing you can do to resolve it. If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the web site’s administrator about the problem.

Or: Warning: Potential Security Risk Ahead Firefox detected a potential security threat and did not continue to www.nytimes.com. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details. What can you do about it? The issue is most likely with the web site, and there is nothing you can do to resolve it. If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the web site’s administrator about the problem.

The explanation is as follows: Someone could be trying to impersonate the site and you should not continue. Web sites prove their identity via certificates. Firefox does not trust www.nytimes.com because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates. Error code: SEC_ERROR_UNKNOWN_ISSUER

No problems whatever with other browsers. I'm sending this with Safari.

I used this tablet for many years and got lots of bookmarks on my browser, but recently its antenna stopped working. I did some research and found out you can export the bookmarks from firefox even if you cant connect to the internet to use the sync functionality. I rooted the phone, copied the browser.db file from firefox and exported the bookmarks table with SQLite Browser. I read on some verry old (6-8 Years ago) threads on this forum that they imported the bookmarks.csv they got from the db in excel, then modified it in some sense and then exported it to a html file to import that in firefox. I did everything to where i have the whole table in excel, only need to know what i need to modify in it.

Original Posts:

https://support.mozilla.org/en-US/questions/1065613; https://support.mozilla.org/gl/questions/1006480

Hello, I use Firefox 105 on my PC. I have embedded various YouTube videos on my website. I've had the following problem for a few days: I can see my videos on both my smartphone and tablet without going to YouTube. On my PC (Win 10 Pro Vers. 21H2) the display wheel "rolls" without opening the video (... "an error has occurred, try again later"). But if I click on: "Watch on YouTube" plays the video via YouTube correctly. Does anyone have any idea what might be causing this? Is there a wrong setting in the Firefox browser? Many thanks and best regards Helmut

I tried to load the following page and it does not load correctly: https://www.riu.com/pt/hotel/aruba/palmbeach/hotel-riu-palace-aruba/index.jsp When I load the page almost nothing shows up (see attached). I have tried the specific address, and also what Google and DuckDuckGo search returned, same result time, although the search returned the English page version. Also, the page loads correctly in Edge, Opera and Chrome. It also works fine using Firefox for Android. Seems to be just on Windows.

Firefox 105.0.3 Windows 10 Dell G5 5587

This is the second time in a week I have filed a report about a page not working. Last time it was a very specific page on a specific site, this time it is a the top level of a fairly generic website. I've been a Firefox user almost since day 1, on windows, unix/linux, and android, and I have not had this much trouble before. And yes I understand this is a volunteer effort, so if there is anything I can do to help get this working let me know.

When playing videos, specifically on YouTube, I can see some blocky/pixelated sections in video playback.

Issue is not present on Chromium-based browsers, I've tested in Vivaldi and Chrome. Both are using dav1d.

When AV1 is disabled through "about:config" the issue is gone, but then I face a stuttering problem.

This are my laptop's specs:

OS: Nobara Linux 36 (Thirty Six) x86_64 Host: ROG Zephyrus G15 GA503RM_GA503RM 1.0 Kernel: 5.19.14-201.fsync.fc36.x86_64 Uptime: 2 hours, 41 mins Packages: 2557 (rpm), 9 (flatpak) Shell: bash 5.1.16 Resolution: 2560x1440 DE: GNOME 42.3.1 WM: Mutter WM Theme: Adwaita Theme: adw-gtk3-dark [GTK2/3] Icons: Papirus-Dark [GTK2/3] Terminal: gnome-terminal CPU: AMD Ryzen 9 6900HS with Radeon Graphics (16) @ 4.935GHz GPU: NVIDIA GeForce RTX 3060 Mobile / Max-Q GPU: AMD ATI Radeon 680M Memory: 5104MiB / 15227MiB Dav1d package: dav1d-0.9.2-2.fc36.x86_64

Anyone can give me a hint how to get rid of the frames around the pictures/shortcuts on the new tab page?

link text

See that last option? i never want to see another Search Engine suggestion again by right clicking the address bar. This should also be a standard setting if it's going to be present in the first place.

I recently had to restore my computer. Doing that I have to get the new firefox which I now have version 102. Updates disabled instantly. I was on version 88. On version 88 this feature was not on it and version 102 now has this feature and I do not like it.

The feature I am talking about is if you open the downloads panel and view the downloads list and right click on one of the downloaded files in list there is now an option to Delete. I accidentlly hit this and thought it was just deleting it from downloads panel. Nope it deletes it from computer permanently, not even to recycle bin. Click Delete its gone for good until download it again.

And this delete option is right above the option remove from history, which I use a lot.

So I want to know how to disable this delete option? Thanks

I've read the forums, i've tried adjustments for days on Win 11 and firefox. Zoomed in zoomed out, adjust font sizes Either it's way too tiny to read or the page is fine but text over laps i've tried the zoom in on text only as well Basically tried everything. enclosing a youtube page for reference

i just last night switched to Firefox and i am loving it! the only issue i have is that YouTube does not seem to be able to go over 480p no other website has this issue (for ex twitch) and if this could be fixed i would never go back to chrome

Hi, just as title describes, I'm unable to launch Firefox on my computer right now. I think the app MIGHT have automatically updated itself while I left it open overnight, but I'm not sure. All I know is, I'm unable to launch it after it crashed itself while I wasn't looking, and I don't want to factory-reset it because I have a ton of pages open and don't want to have to reopen them. What do I do?

Crash ID: bp-072b8eec-9024-4c7e-9723-ba6c20221008

(If there's any other information on my computer that I can go fetch to solve the issue, I can do so easily, just tell me)

Cannot access banking website - get page that is all type-written down the left side, credit card site says I need to up date my browser, computer says it is up to date; downloaded and reinstalled firefox - no change i don't know what to do next

I've been trying to get a video to play for over a day now, drm-controlled content is checked but firefox won't install the widevine plugin, it just keeps saying that it will install shortly. I even deleted the cache in hopes to fix the problem, but it did nothing. What can I do to fix this? Also, and I don't know if this is a related problem, some websites just don't show up. It will say they are loaded but all I get is a blank screen (dailymotion and instagram so far).