Diễn đàn hỗ trợ Firefox

I was using my browser just fine until today. Whenever i open it, the whole window becomes corrupted. Its impossible to read the screen when its in that state. However, when i open it on safe mode, the screen its just fine. No corruption or anything. I already cleared the startup cache, closed tabs and checked for updates and nothing seems to work. I installed the snap version of firefox from ubuntu software and its just as corrupted as the integrated one. Please i need help. Here's the log from normal mode and safe mode

This page https://www.nacocanada.com/cpages/common-docs is broken and has a newsletter sign up overlay that can't be closed. So i hide the element with uBlock origin but the underlying page still doesn't scroll. If i make the window taller more content appears, so it is there.

How do I force enable the scroll bar for all websites or at least this one?

I am not able to see live Streaming MJPEG video from both of my cameras on my new Samsung S21 Ultra. I had an S10 Plus and Firefox played both cameras video stream just fine. Odd thing is FireFox Focus plays both video streams like I experienced on my S10. But I have to login manually every time. I want to have the convenience of reg FireFox remembering user names etc. Any help is appreciated.

The "PRINT PREVIEW" option I have found under the "FILE" drop down is GONE!!! I Please tell me HOW to get it back (or at least find it somewhere else)! I absolutely DEPEND on this function for processing orders and printing packing slips !!!!

This is NOT an improvement for me!!! This is absolutely horrible!

My Firefox will not open no matter what I try because it continuously tells me, "Your Firefox profile cannot be loaded. It may be missing or inaccessible."

This error started happening because my Firefox originally wasn't saving the add-ons that I was trying to add. If I closed my browser and opened another one it would be gone. I tried refreshing the browser but that didn't help. I eventually tried reinstalling to see if that would fix the issue and then this error popped up and now I cannot stop it.

I tried reinstalling. I tried deleting the profile out of appdata, etc in hopes it would make a fresh one. I tried making a new profile by running it without opening the browser only to be given an error that doesn't save it. I'm at a loss on how to get my Firefox working again. It is my favorite browser and this is the first time I've ever really had a severe problem with it. Help!

Secure Connection Failed. An Error occurred during a connection to www.netteller.com.

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.

Hi, I can't play any videos with Firefox browser (facebook, youtube, email attachments..). I can play all these videos using other browsers (microsoft edge, chrome..) on the same laptop (Windows 10). I have tried several 'solutions' on the Firefox help forum such as deleting cookies, history etc but running out of patience and thinking of switching default browser. Any easy solutions would be appreciated.

My old computer became incredibly slow and almost unusable. I managed to find my firefox profile folder using the %APPDATA% search and copy it to an external hard drive and connect it to my new computer. I wanted to keep my bookmarks, extensions, and logins, so I followed this:

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile#w_copying-files-between-profile-folders

But nothing changed on Firefox on the new computer. Going back to my old PC will be incredibly tedious, so I am hoping having moved my old profile folder to my new PC I have done everything I need to. Any help would be appreciated.

PS I am at work and don't have immediate access to my computer.

How do I save the same bookmark in multiple folders? (Sometimes it's hard to remember what folder I put a bookmark in: LOTS of folders & some bookmarks are ambiguous/could go in more than one folder; so much easier to find quickly if I had that option.)

Menus do not appear, or are not clickable. tick boxes cannot be ticked, graphics are broken, logos do not appear correctly. I deleted and re-installed. restarted and nothing works....not a virus issue and have not done any update. I'm attaching a menu where the graphics (text boxes are gone), the amazon home page where the name on the logo is missing and a search engine bar that looks broken. Photos that are supposed to be cropped do not appear cropped anymore...etc. I'm trying to click on the box further down that allows me to be notified when someone answers the thread and cannot tick the box.

I am trying to make Mozilla Firefox open all pdfs from Firefox in Adobe without prompting the users about whether they want to save or open. I have Adobe Reader set as the default app for pdf files, and I've disabled pdfjs in Group Policy both for the user and the computer side. I just can't seem to stop that prompt from popping up. Any ideas? I don't want to have to set the application handler manually for 1500+ computers. Thanks!

Hello. I have purchased a new computer and cannot sync my Firefox account with it. The old computer is not working and I had forgotten my Firefox password, so I reset it through the "reset your password" email firefox sent me. After logging in , there is no history of bookmarks, passwords, or add-ons with my account. Does anyone know how i can recover this data?

Hi, I'm having login issues on a website. I use Firefox for my browser. I have a couple of add-ons and VPN. I have disabled them but it still does not work. I have tried Safari with no VPN and no joy there either. I have cleared all cookies, cache history, put tracking protection at standard and cleared cookies from the Profile Folder (read the article on Mozilla about this issue). I have taken Firewall off Mac and tried it withiut VPN. Still nothing. I have checked my ipad without vpn. I can login on that on Firefox (without vpn) but I want to use my macbook if possible.

It's strange because I managed to log in on the website first time no problem and then I logged out and back in again and it wouldn't accept the password change. it's for a course and the people organising it have reset the initial password again but I still can't log in (they can do it with my username as they have sent me a video showing me they can and saying that it must be my end).

I have previously had a login problem with another website with a 403 error but that works without vpn. This doesn't.

Any help would be greatly appreciated.

Firefox has an option where you can see and copy saved passwords. is there any chance that i can block this or hide it. just a way that i can prevent people from seeing my saved passwords. thank you.

I am writing an extension based on NewTab Override. I would like to know if there is a way to set the browser address bar to have no text when focused, and if so how to do that. So far I am using the code from NewTab Override that does: ``` browser.tabs.update(tabId, { url : url, loadReplace : true }, () => {}); ``` But I don't know any function or property to set for the address bar. I looked in the developer page for Mozilla Firefox but couldn't find anything.

I am using Firefox 84.0.2 (64-bit)

I just installed it on a new laptop. It was working fine.

I then changed to the profile from my old laptop. It works fine but many images now have glitter; not all over, but as if the image creator has pained this on in odd areas. For example a winter scene has a landscape of a man climbing a mountain and the man is covered by glitter.

I can't work out why this has started happening or how to prevent it. It's intrusive and hurts my eyes.

The very helpful scissors tool has gone from the three-dot menu and I can't find it anywhere. Is it a bug or has this feature been removed?

This is what I see now in the menu.

I have my Instagram tab pinned, as well as my Facebook Messenger tab, and every time I start Firefox, the Instagram tab is not pinned anymore. Yet, the Messenger tab is still pinned.

Is this a bug or a feature of the Facebook Container? I assume a bug since it only happens to my Instagram Tab.