Diễn đàn hỗ trợ Firefox

How do I remove the scam pop-up that won't let me access firefox on my iphone? The pop-up says "your apple iphone is severely damaged." I can't open a new tab or delete the current tab.

When I'm trying to go to a specific website, it doesn't connect with an error code "SEC_ERROR_UNKNOWN_ISSUER". I was able to press a button labeled "Accept the Risk and Continue" before, but the button seems to have disappeared?

Hi all, I use to update Firefox with my Linux distribution package: I build the new package then upgrade it on the system. Anytime at the first launch of the new Firefox just installed version, it opens a new blank profile instead of my usual profile. I can set my usual profile as default by launch Firefox Profile Manager. So after update I launch from command line terminal or through launcher bar:

firefox -p

And It starts up profile manager, then I choose my usual profile and check it as default one. After that, when I open Firefox again, it uses my usual profile as expected.

Now the question: - is there a way to automate this procedure so I have not to repeat it anytime after I update the browser?

PS. I noticed my "profiles.ini" file is populated with a lot of profiles sections, likely maybe anytime I update, a new one is added in here. I don't know if it is a regular behavior or not.

Hi. Is there a way to customize the order of Firefox headers and footers on printed pages (including print-to-pdf)?

I prefer the header to be url only, in the center. While the footer has page on left; title in the center, and date on the right.

This used to be easy to accomplish with print options in older versions, then -- as the print dialog changed (and actually improved a lot in most *other* ways) I had to turn to about:config modifications like those described in the 1/27/21 reply here: https://support.mozilla.org/en-US/questions/1323433. But now I can't seem to find any way to have any control over print headers besides "on" and "off."

One problem I find with having both page title and url on top is that these can be long, causing one or both to be truncated.

I'm using Firefox 115.3esr.

On my old iMac, Firefox remembered sites I had visited and filled them in, like if I typed A it would autofill Amazon. This is not happening on my new 2023 iMac and I can't figure out how to turn this on. Also, I could see my site visit history on my old iMac, but this field is blank, with no history of sites visited shown, on my new machine. Help is appreciated. Please keep in mind that I am technically retarded and need step by step guidence. Thank you in advance for your help

I try to set up Firefox Sync on Firefox on a VM on Fedora. I enter my e-mail and password. Then I get the message (after retrying): "Email resent. Add accounts@firefox.com to your contacts to ensure a smooth delivery." However, I do not get the email with the confirmation code.

My email address has this format j@xxxxx.org

Is there a shortcut to deattach tabs from one browser window so it turns into seperate window, so that you don't need to deattach tabs with clicking and dragging them with mouse?

I noticed that someone else had this question, but instead of answering it, it just got archived.

When browsing Youtube, the browser Back Button doesn't work. For example, if I start on the Youtube main page, then click on a video, it will show the video. But then, when I click the browser's "Back" navigation buttion, it does not take me back to the main page. The URL in the address bar will be the main page, but it will continue to display the video I just watched instead.

This only seems to happen on Youtube. It's been a problem for a while - possibly as much as 2 years or even more. And it doesn't happen every single time. However, it has been happening a lot more frequently lately.

It's almost as if Firefox just doesn't want to refresh.

I've tried clearing the cache. The problem persists. I've dried disabling all add-ons. It still happens. I've tried running it in troubleshooting mode. Still a problem.

I've tried to duplicate this in Microsoft Edge; it doesn't seem to happen there.

After removing elements from a website with another add-on, I'm left with a considerable white gap at the top.

I can manually change (pointless) the margin-top property to -100px, but how do I do this with the Stylus add-on?

Stylus doesn't like negative values:

margin-top -100px

10:20 Expected "{" but found "-100px".

Is there a lighter/simpler alternative to Stylus?

If you have multiple tabs open and you hit Ctrl-T to open a new one, it opens it at the end of the tabs, and the cursor focus moves to the URL bar so you can start typing in an address/search.

If you right-click on any of those tabs, it opens a new tab to the right of that tab, instead of at the end (which is what I want, as right-clicking on a specific one to open a new tab, to me, means you are linking those tabs in layout and want them together) BUT the cursor focus DOES NOT move to the URL bar.

This seems pretty counter-intuitive, and means that so many times I right-click, Open New Tab, and start typing a URL and then see that I have to stop typing, click in the URL bar, and start typing all over again.

Is there an about:config to force the focus to the URL bar, or is this a bug? If there's no setting for this, I would definitely consider this a bug because you have 2 different behaviors for New Tabs.

I installed one of the ad blockers, I can't remember which one. It's given me so much trouble that I thought to disable or delete it. I deleted the little icon ( a stop sign) that shows up on the far right of one of the menu bars (don't know the name of that bar but here it's the second one down). But websites still complain that I have an ad blocker. I've gone to 'add-ons and themes' but I can't find it. BTW, what's the difference between an add-on, a plug-in and an extension? Which one of those are ad blockers? How can I see and then delete whichever blocker I still have? Without the icon I can't even disable it for individual sites.

I get this when trying to get my email from Comcast:

Secure Connection Failed

An error occurred during a connection to oauth.xfinity.com. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

All of my addons are disabled and won't re-enable!

They all say "addon name" could not be verified for use in Nightly and has been disabled. See attachment clipboard00.jpg

If I try to install an addon from the recommended extensions settings (for example "return youtube dislike ") I get a message bubble stating "The Addon downloaded from this site could not be installed because it appears to be corrupt. {OK!}" See attachment clipboard01.jpg

The message above about addons appearing to be corrupt happens if I go to any of my current addon pages and try to redownload them.

Has the Autofill Forms option been removed from the latest version of Firefox? I get the opportunity to autofill credit cards but the Forms section seems to have vanished. Am I missing something? Thanks.

I have multiple internal websites, which all follow the pattern of [site.one.two] which resolves fine using the internal DNS server i have configured by going to https://site.one.two and through other programs via site.one.two, and all the [one.two] suffixes are blacklisted from being resolved with DoH in firefox, but it still forces a web-search, even with searching from address bar being turned off, instead of resolving through my local DNS server (local server resolves local domain suffixes, anything else gets resolved through cloudflare DNS). I haven't found a fix in any other forums, and there are enough unique internal addresses that manually adding each and [every site.one.two] as an exception would be something i would like to avoid. Is there any way to tell firefox to resolve through DNS first for addresses or domain suffixes?

Hi,

I have been trying to use the extension "Sidebery" to replace "Tree Style Tab"

If my tabs are nested, bookmarking the tab tree will give me nested folder structure in firefox's bookmark.

If I right click on the top level folder in the bookmark, select "open all in tabs", firefox will only open those bookmarks in the 1st level folder, but won't open those bookmarks in the nested folders.

I wonder is there a way to do it? That is, open all bookmarks in a folder with those in the nested folder, all at once?

Best, Jake

My preferences are set so that "When you open a link, image or media in a new tab, switch to it immediately" is OFF. Therefore most of the time when I Cmd+click on a link, it opens on a new tab that loads in the background. This is what I want.

However, some websites break that behavior. 2 high-profile examples:

• In Google Docs, if a piece of text links to an URL, clicking on the text shows a small window with the URL. Cmd+click on that URL opens it in a new tab, and takes me to that tab.
• In Facebook Messenger, if I Cmd+click on a chat, again the chat opens in a new tab and I'm taken there. Additionally, the original tab activates that chat.

Interestingly, in both these cases, I get the right behavior if I right-click on the URL or in the chat and in the contextual menu choose "Open link in new window/tab/container tab": the new tab stays in the background.

So my question is: does anyone know of a way to always make cmd+click behave just like "Open link in new tab", no matter the website?

I'm on Firefox 115b4 on macOS, but this has been like this for years at least.