Firefox Support Forum

I am running "Firefox Browser 93.0", and I have Windows 10 Pro Version 21H1, OS Build 19043.1288. I am unable to watch certain video's, as an example, the video in this link: [https://www.wandtv.com/news/illinois-.../article_24b92a86-32c4-11ec-a487-3bb3f17fa133.html] won't play. It use to work, but something has changed, not by me. It will play that same video using the "Edge Browser" so there is nothing wrong with the website. However, I can play this "YouTube Video": [https://www.youtube.com/watch?v=qAJSYk5wMiA] I also tried another link in their website, this is the weather link: [https://www.wandtv.com/weather] it starts to play, but then stops and nothing ever plays. Here is another link I tried on their website: [https://www.wandtv.com/sports/fans-ma.../article_f94f4ade-32e0-11ec-9351-ef71f52b96cd.html] It won't play either. But they all play in the "Edge Browser!" Any ideas on what changed and how do I change it back, so they will play? I prefer Firefox Browser to any other browser! Do you know what the issue could be? I appreciate your time! NiceSeeingYou

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.nextechclassifieds.com because this website requires a secure connection. www.nextechclassifieds.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. www.nextechclassifieds.com uses an invalid security certificate.

The certificate is not trusted because it is self-signed.
Error code: MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT

This is a trusted website, been using it for years without issue. Used it a few hours ago to check my account. Only problem is on my pc, all other devices including people I've asked, do not have this issue. Seems to be a problem with the firefox browser only.

With recent versions of Firefox, I haven't found how to open all tabs from another synced computer. They use to be displayed in bookmarks or history lateral menu and I could use the right button to open all. If this option has been removed, I don't understand why going steps back.

Hi,

I have scoured the web and can't seem to find a solution to this. Either firefox doesn't support this feature or I haven't looked enough.

How can you identify the pid of a tab in firefox? There isn't a tab in the task manager that shows this, like with chrome, opera, and edge.

I'd appreciate any help.

Thanks

Hi, I am using the dark mode in firefox which is god sent boon to persons having glaucoma, with dark mode in firefox and dark reader add on. This was going well and after a recent update, I could not find it working. The dark mode is enabled and dark reader was there, but the browsing pages only shows in white. Has firefox changed anything recently to have this issue? If I miss something would the experts say, how to get back my dark browsing experience in all sites. If I find anything not visible in some sites, I used to go the windows properties and change the contrast theme to windows basic blue theme and then switched back to dark theme. this was helping the glaucoma persons very much. please, say how to solve this problem

I am trying to restore the take screenshot icon. The suggested remedies do not work. Take screen shot does not come up as an option, no matter on which part of the page I right press. Also, control + shift + s does not work. Finally, the screenshot icon does not show up in my list of icons to be transferred to the toolbar, so I can't do that either. How do I fix this? I use screenshot a lot, especially the option to take a shot of part of a screen.

Hello, I have issues with Firefox developer version for couple months now, when I play videos, like youtube, or other sites they constantly lag. They play for like 1min and lag, continue for another 2min then lag etc etc. (even short videos on twitter lag). It was not like that before and I don't have this problem in other browsers. Does anyone know what can be the problem here? Thanks

When choosing Paypal as payment option on website, the Paypal login page loads. But after entering my login info I just get a continuous circle. Message at bottom is "waiting for c.paypal.com" then nothing happens. Going in again I sometimes get the verification pictures to prove I am not a robot, but then the same thing occurs. I have cleared cache and data, refreshed Firefox, re-entered Paypal login details, checked Firefox is latest version, disabled AntiVirus, checked tracking protection is standard, turned off AdBlocking extension for that page but nothing works. Using Opera browser Paypal opens immediately. So what's the issue here Mozilla? Any fix?

When logging in to cmx.weightwatchers.com, I enter my username and password and click keep me logged in. Each time I go to their website, it still asks for my username and password. All other websites that I request to keep me logged in works fine, but this one doesn't. What can I do to correct it so that I don't have to enter all the information to get logged into that account?

How do I save webpage on desktop as shortcut. Online reponse speaks of padlock. I don't see padlock. And Mozilla site answers with how to stop creating shortcut automatically.

Thank you

Whenever I go to Amazon.com the site displays in a micro format (about 20% of the screen in the center), too small to read at all. Yet if I use Internet Explorer I do not have these issues. I have cleared my cache etc (no luck) How do I fix it.

When I surf Youtube, Google, Facebook and anything on Firefox this following error happen every time. Please help me.

Firefox detected a potential security threat and did not continue to www.youtube.com because this website requires a secure connection.

What can you do about it?

www.youtube.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.

The issue is most likely with the website, 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 website’s administrator about the problem.

I have some fonts that I have installed through normal methods. They are all ttf files. However, they do not show up in the firefox change fonts dialog box. Even many pre-installed fonts do not show up. Websites are only able to use the local fonts listed in this dialog box. How will I then be able to use those fonts?

Firefox RAM usage on M1 Mac has dramatically increased. Unfortunately, b/c the memory usage is in firefox parent process, I can't simply terminate a process corresponding to a "tab", meaning I have no choice but to restart Firefox (closing & reopening all tabs) every hour or so of usage.

This is a new issue from a long-time firefox user (on multiple operating systems). It happened after I upgraded the Mac to "Monterey", which may or may not be coincidence.

whenever i try to open Reddit in Firefox, it just shows an unusual error message screen, i'm unsure why it's doing this, but i have Reddit tabs pinned that still work, i've tried forgetting the site, but it still dosen't work.

Hello, I have problem playing nba matches on watch.nba.com (all the videos on the website included) I can play them fine in chrome and edge but firefox seems unable , when I click watch nothing happens. it stays in the same page and the same layout

Starting as of today (Oct 13), the FACEBOOK screen suddenly moves when I am typing a comment. Whenever I hit SHIFT+alpha_letter at the beginning of a line OR simply hit the backspace key, the screen suddenly shifts about a page up, closer to top. This shifts the entry area where I'm typing down and off the screen. Just hitting the backspace to correct a typo causes the screen to scroll on its own. I have to scroll back down to the entry box and if I make another typo, it happens again. It is maddening!

I've restarted in troubleshoot mode and the same thing happens, so it is not an add-on. This is happening on both my Firefox Linux systems AND on a Windows 10 machine, so I don't think it is specifically OS related either. The screen however does stay put, like it is supposed to, using Chrome or Opera.

Is this a Firefox problem or is FACEBOOK messing with Firefox?

Now, in the old Firefox, you used to be able to select "Email Link" to send a URL to someone by e-mail in your favorite e-mail client. I used to do that routinely, sending links via Thunderbird. I'm now using FF93.0, and all I see is "Share", which, when you point it to "Mail" it dumps you in Chrome. Now, in my FF prefs, I have specified Content Type->mailto->Use Thunderbird, so why it's dumping me in Chrome makes no sense.

How do I use Firefox to share a URL in Thunderbird like I used to be able to do?