Diễn đàn hỗ trợ Firefox

Hello, I recently downloaded Firefox and transferred all my data from Chrome to Firefox. Everything transferred well and for a day all my bookmarks were visible at the top of the page. Then I turned off bookmarks to only show on a new tab, and then later realized that the bookmarks were not being displayed on the new tab. And even when I turned bookmarks to always show on all tabs the bar is there but nothing is displayed. All my bookmarks are still in the Firefox Library and I can save new bookmarks to the library, but the bookmarks bar above still remains empty. Clicking Import and Backup in the Library and clicking Restore hasn't returned the bookmarks to the bookmarks bar. Does anyone know how to fix this?

Over the years I have accumulated important links in my Firefox Bookmarks bar and passwords file and it would be a disaster if for some reason my hard drive got compromised and I could no longer access them. Is there any way to copy the data to another set-up, independent of my laptop, from where the data could be retrieved in a usable form for display on another laptop or PC? Thanks.

Hi, I suddenly have a thick white border around three sides of browser that I can't rid of. I did a search here and found what looked like a solution but there is no "Customize" button in FF any longer, so not sure how to fix this.

It is not running in compatibility mode either.

Thanks all

I'm getting Access denied Reference #18.6b01cb8.1700662622.22a58314 only on tesco.com since last nights firefox update.

All other sites are funtional (at least no others found yet). I have cleared cache and cookies but still getting the issue.

The site is up and accessible by ms edge.

I have run in troubleshooting mode and taken off any extensions, still no change.

Running windows 10 (latest updates)

Malwarebytes is reporting no issues.

Hello all,

When I'm using my Firefox browser spell checking is working only with English language. Polish is my native language and I want use this function to Polish as well and set Polish as my default language. I tried to adding/removing other languages than Polish from options, setting higher priority to Polish language, how ever I have no result with that. Please help, will highly appreciate. Thanks in advance.

Best Regards, Adrian

UPDATE: when I use the troubleshooting method, i.e, WHAT HAPPENS is it appears to be trying to work, but it's on again, off again, with more than one extension appearing to be the problem. Very mystifying. The only time the problem is completely fixed appears to be when I close all the extensions. (So far.)

HELP!!!!

When I open YouTube, the search videos all show an image. Then when I select one, for the last two days now, that ("front page) image is gone - although the video plays OK.

When I us my Chrome browser the video I've selected begins playing the instant I open the video; even when I've opened the link in a new tab.

Steps to reproduce:

1. Have Google as the default search engine.

2. Type a search string into the address bar.

3. The address bar briefly shows a URL for the Google Search results.

4. The address bar is very quickly overwritten with the original search string.

See screenshot for example.

How do I stop step #4 happening? I want the URL to remain in the address bar, for example to be able to give somebody a link which executes the google search.

I think this is new in FF121.

Since yesterday I can't access multiple websites like Spotify, Reddit, Google Drive etc on my desktop computer anymore. I don't know why and I didn't change anything over night. It also works fine in Microsoft Edge.

Reddit shows the "whoa there, pardner" error, spotify shows 403 error, Google Drive says my browser (Firefox 120.0) isn't supported and others are simply unavailable. At the same time Google looks off and Twitch is just a huge loading screen.

I cleared all the data (cookies/cache), but that didn't help.

I had this reddit error a few weeks ago already, but it disappeared on its own. However it was only reddit that was affected.

Today I went to tesco.com site OK, but when I tried to login I got an Access denied message: "You don't have permission to access "http://www.tesco.com/account/login/en-GB?" on this server.

Reference #18.96421202.1700656983.3e25708 "

I cleared cookies and history and eventually uninstalled and re-installed firefox, but still the massage persists.

MS Edge and Google get me i fine, but I prefer to use Firefox if possible. Can you please suggest a way to prevent the error message.

Thanks

I want to print a page. But without the header and footer stuff (because it is ugly and I don't want others to see the information). There are a lot of old pages here and on other places about how to do this. They are unfortunately all deprecated. What is the way to do this as of 2023? OS is Windows, btw.

I've the same problem as https://support.mozilla.org/questions/1317794#question-reply but after following the steps for the solution, it doesn't work for me. Does it have to do with all updates since this question was answered? I've created the chrome folder. I've created userChrome.css file and added the following without "`" marks in it and saved it and restarted firefox after changing the toolkit.legacyUserProfileCustomizations.stylesheets = true . ```

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

#appMenu-fxa-label > .toolbarbutton-text { visibility:hidden !important; }

```

It doesn't work for me. Please have a look.

I cannot access my Bank Account, the authenticity of the received data could not be verified.

I have contacted the Bank, and they are supposed to come back to me. Computer has been restarted and debugged and I have reset the router. The certificate is from COMODA RSA! VALID 13.01.23 - 02.02.24.

It has been suggested when I looked on one Site that I nofify yourselves of this matter.

Thanking you in anticipation! (I have to admit I am not cech savvy!) Janice

As described in this thread (https://support.mozilla.org/en-US/questions/1431159#answer-1618832), I had a problem accessing one particular domain after doing everything I could find to fix it. Setting DNS to Increased Protection fixed it. It's partly just curiosity but also concern that I'm asking if there is an issue that should be addressed.

The basic scenario: could not access one particular domain only in FF on one computer. No problems with FF on other devices and no problem with other browsers on the computer in question. Configuring DNS settings to Increased Protection is the only thing that allowed me to access that site (which happens to be the org I work for). So the setting is only necessary on this device and only for that domain.

What's the explanation or solution for ensuring I don't have other DNS issues, or something else, that will be a problem later?

I am having this issue where Firefox only keeps "Today's" history. I have thoroughly looked at the community's similar issue fixes.

I do not have Private Browsing on. I have set "Custom Settings History:

 -Remember browsing and download history
 -Remember search and form history

I do not have CC Cleaner or like apps and the one I do is on auto-manual and does not clear FF.

There is no reason for this. I would like to know when answering, what are a couple of likely causes for this. It appears by many queries here and on Google this has been an issue for years and FF seems not to want to fix it or know about it. Your help is appreciated.

When trying to launch firefox like normal I got a "Your profile cannot be loaded. It may be missing or inaccessible" which would keep it from starting. Periodically, with firefox not even running in the background, I would get the XULRunner error (see attached image).

Looking online for solutions I took two steps: 1. located my profiles folder and deleted it 2. reinstalled firefox entirely

As you can see by the attached image the same error messages as before would actually interrupt the install itself.

I am at a loss and any help would be appreciated since Chrome sucks and I'd like to keep using Firefox.

When I try to watch video on YouTube or other places. I encounter green line and reverse picture. I have reinstall Firefox but it still persist. Can someone please help me understand how to fix it. As the video bug only happens in firefox. And not in other browsers such as brave or edge. i also se that other people have the samme issue exampel https://support.mozilla.org/en-US/questions/1429053.

There is one domain that I get a "server not found" error for even after doing many things to fix it including everything here, https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can#firefox:win10:fx119, checking blocked URLs in the registry, running malware checks, safe mode, reinstalling FF after removing all FF folders from my system.

Before I did a completely clean reinstall, disabling the Open H264 codec (see attached screenshot) would allow me to access the site. But thinking it was needed, I did the clean reinstall. Now disabling it does not allow access to the site.

So far, I have not found any other websites with this problem. It's a .edu domain which happens to be the one I work for! What else can I do?

After a recent reinstall Firefox seems to have a problem. This seems to be only Firefox specific and I can't find a working solution online after googling.

Youtube videos work, although they do give errors sometimes. A refresh always fixes those. However Twitch/Youtube live streams do not, and display a generic error message. When trying other browsers the live streams work fine.

And old Bugzilla post (https://bugzilla.mozilla.org/show_bug.cgi?id=1467495) describes what I believe to be a possible reason for the problem, however following the solutions in that thread have not yet lead to a solution.

Any further insight or solutions would be appreciated.

Hi, I'm developing a webapp that's designed for print. It uses a "pinterest style" layout to have a column grid of objects with variable heights, and the print styles avoid breaking these items over the page barrier. (In fact, there are two grids on the page, one after the other). The website looks and works fine on screen, and both screen and print work great on Chromium browsers. But on Firefox, using ctrl+P or developer tools' print view causes the page to hang and the tab to ultimately crash.

I know it has something to do with handling the grid layout CSS as the print preview worked fine until I made the change from a traditional row-grid to a column-grid.

The site creates a variable amount of content based on user options at the top of the page. If the content generated is quite small (avoiding a page break?), the print preview works fine. In the link below, I've included some GET variables to guarantee a long amount of content to reliably reproduce the issue.

The site in question.