Diễn đàn hỗ trợ Firefox

I want to disable ad blocker. I actually want to see the ads. Since I did the latest update, ad blocker is turned on, and there appears to be no way to turn it off. How do I disable it?

I am able to find the mailto setting easily. However, there are no clients listed to choose from, no gmail, yahoo, nothing. If I click "choose other" I'm expected to choose an application from my computer. I just want to be able to click a mailto link and have it go out through a new tab via my existing, free, yahoo mail account.

When I go to https://outlook.live.com/owa/ and click on Sign In, I am sent to https://login.live.com/login.srf?wa=wsignin1.0&rpsnv=13&ct=1664586249&rver=7.0.6737.0&wp=MBI_SSL&wreply=https%3a%2f%2foutlook.live.com%2fowa%2f%3fnlp%3d1%26RpsCsrfState%3d17ece2a1-03ee-4d23-1804-181c6fe01157&id=292841&aadredir=1&CBCXT=out&lw=1&fl=dob%2cflname%2cwld&cobrandid=90015 which stays blank instead of bringing up the Sign In form. I've tried deleting the cookies to no avail. I've tried Troubleshooting Mode to no avail. It's been this way for a couple of months now. I have no trouble signing on to Outlook.com using other browsers.

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

When expanding any video to full screen mode, the video does not occupy the entire screen. However, if Firefox itself is in full screen mode, then the video will occupy the full screen.

I tested this on YouTube and another website's video player and was able to consistently replicate the issue.

See image to view the bug in action.

Hi Firefox community,

Do we have any settings in firefox where we can enable/disable dark mode in firefox browser instead of installing a plugin or addon? I am looking something that is offered within the browser instead of a plugin.

Thank you all.

I told Firefox to never remember a website login user/pass but now want to revert this. I have looked for this option but can only find the remembered user/pass. There is an option at the bottom of the chrome password list, but not in firefox.

Can someone please point me to the area that i can remove this "never remember logins for this site"

Thanks in advance

While exploring about pages in Firefox, I came across about:profiling. I'm not sure what exactly it does, but since I've been to it, a profiler icon has been added to the toolbar and I can't find any way to get rid of it completely (only ways are to hide it). If it could be added, there must also be a way to remove it? How can I close it?

When opening an email with an attachment (either a pdf or picture) in Yahoo mail, the Yahoo mail tab closes and I have to then reopen it from History, Recently Closed Windows. It's been dong this for some time now. Does anyone know how to fix this?

Hello. My Windows 10 suddenly crashed, so I reinstalled on a new hard drive, with the latest version of Firefox. My old Firefox, was completely up to date but still used the Key3.db file for my saved logins, and it will not work with the newest version. I tried creating a new profile and pasting the logins.json and key3.db files, as suggested by an old Firefox KB article, but that doesn't work any more. Is there any way for me to get the saved logins out of the older JSON file with the Key3 file? I desperately need help with this, and would appreciate any that someone could give.

Regards, Brian Mercer.

Since Firefox for Windows upgraded to 105 the Wordle web site fails to work - it displays the grid at the bottom of the window with no scroll possibility & it displays that even when a correctly working browser displays my statistics.

The website works correctly on other browser (Chrome & Edge), on Firefox for Android and on Firefox for Windows 104 (luckily I had a machine which hadn't been on for a few weeks and therefore was no up to date).

The attached images show the website as it should be (on Chrome) and as it appears on Firefox 105

MP4 videos fail to play with the following error messages:

1. No video with supported format and MIME type found.
2. Video can't be played because the file is corrupt.
3. NS_ERROR_DOM_MEDIA_FATAL_ERR (0x806e0005)
4. Error no decoder found for audio/mp4a-latm

example video #1 on https://tekeye.uk/html/html5-video-test-page

other notes:

• issue began a 1-2 weeks ago
• issue does not exist on chrome browser
• MP4 videos can be downloaded and played successfully in applications other than firefox
• other video formats play successfully in firefox
• issue persists in troubleshoot mode
• issue persists with hardware acceleration on/off
• issue persists with tracking protection on/off
• media.mp4.enabled is set to true

HELLO very small cursor on Firefox windows (on all other windows the cursor size is normal) via snap after upgrading to ubuntu 22.04.1 LTS. how can i change it? Thank you

Recently, I've started noticing these quick action tiles in the URL drop-down menu (I've attached a screenshot). There's a help icon to their right, but it just goes to https://support.mozilla.org/en-US/kb/quick-actions-firefox-search-bar?as=u&utm_source=inproduct which is a 404. I found this bugzilla bug, but I'm not 100% sure on how the versioning works (even after consulting Wikipedia). The bugzilla entry mentions it's fixed on 105.0a1. I'm using 105.0b6 of the Developer Edition.

Hello, I know when I closed the firefox browser , I can reopen firefox browser and click "settings"-- " history" --" Restore previous session" to retrieve all the webpages I was viewing last time. but this time it seems I made a mistake . I closed the firefox browser in the beginning with many valuable webpage still opened, after I restart the firefox browser, I close the browser by accident without firstly reloading all the restore previous session . Then I have to open firefox brower again, and try to click "settings"-- " history" --" Restore previous session" to try to retrieve all the webpages I was viewing in the first time. but this time no previous session can be loaded. since those webpages I was viewing are important webpage I need to check, May someone tell me how to get those valuable webpage link again? I know I can try to find those webpage link slowly by checking all the history day by day. but honestly speaking, I have 15 around webpages in the firefox brower and some of them are viewed around 20 days or 30 days before . I haven't closed my firefox browser for almost 40 days so it will be very hard for me to search the history webpage to find out them one by one. I am not sure whether there are some tips to try to load the "restore previous session " again for the first firefox browser I closed.

I seem to have that bug that was fixed a few updates ago where videos won't play. I have the latest version of Firefox. For example, YouTube will load and the page, progress bar and even subtitles will show, but the video will just have the spinning circle. I have tried videos on other websites (Facebook, Tumblr) and they won't play either.

I've uninstalled/reinstalled Firefox, refreshed Firefox, disabled all add-ons, allowed autoplay of videos/audio but nothing works. The videos all work on Chrome and Edge.

Greetings!

I would like to be able to open selected links via the search tool with CTRL + Enter, like it is possible on most browsers. Basically, I do CTRL + F, select a text which brings me to a link I was looking for, and do instantly CTRL + Enter to open this link. Currently, this shortcut only toggles the ability to see all matched texts and doesn't open the link.

Do you know if it's possible? Thank you!

What is with Firefox lately. Endless problems with screen sizing, light dark mode. But what is really pi**ing me off is the inability to connect to certain web pages. No I don't have a any spyware or viruses (I have scanned with 3 different programs) and I have no problems with connecting to the pages with Chrome or Edge. I'm getting the error messages

Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to www.amazon.ca because this website requires a secure connection.

Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to www.ebay.ca. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details. Firefox detected a potential security threat and did not continue to www.google.com because this website requires a secure connection.

Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to www.google.com 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.Error code: SEC_ERROR_UNKNOWN_ISSUER

And I get the same warning with Amazon, eBay, my email client Shaw Mail, Google Search, and several other pages that require a login. Is there anything I can do to fix this as I'm really starting to rethink my preferred web page browser?

Hello,

 I was having problems with one of my passwords not updating correctly in firefox 105.0.1   I exported all of the passwords into a csv file and then followed the steps outlined here in the forum to turn on import passwords from a file.  Then while trying to fix the password problem I removed all passwords/ids.  I clicked on the import from a file, selected the file I exported to but nothing happens.. No passwords, no id's. I thought maybe I wouldn't see it in the about:logins screen, so  I tested out three different sites from the export file and no luck on anything.  I was expecting a box to pop up telling me the import was successful or if I was sure I wanted to import all of these passwords but nothing, so even though I get the drop down to import I can't.  Has anyone experienced this problem before or any solutions.  

Thanks in advance