Firefox Community Forum

Late last week I updated Firefox to the latest version. Ever since, I keep getting the same error message that I typed in the subject line. I've seen previous recommendations on how to correct it, but none of them work, probably because there's been more updates since what I've come across. I'm getting this error message on multiple sites, including my bank account and my business email account. I'm presently typing this on a different browser (Brave), because I was getting the same error trying to find answers using Firefox.

Any assistance would be appreciated; thanks.

I'm using the vertical tabs feature. I also tried enabling the "Expand sidebar on hover" option, which minimizes the side bar, and only expands it when you hover on it.

Issue: I have a lot of open tabs, and I'm usually working with the ones at the bottom of the list. When the bar minimizes the scroll position resets back to the beginning. So, every time I want to select a tab, I have to scroll back down, which makes this feature very hard to use.

Expected behavior: After the vertical bar minimizes, and I hover again, it should keep the scroll position.

The comment sections for foxnews.com and other sites disappeared using Firefox but not when I switched to Chrome. This just happened 6-18-25. Before this date, it worked on Firefox.

I just got a new Epson 3-in-one printer and tried to sign up for the warranty. I got a message that the warranty was expired... I went to the Epson support site on Firefox and Malwarebytes blocked the site as malware... It said I could add the site as approved, but I don't know how to do that. "https://www.epsoncom.com/my-account/home". The Epson site said I already had an account but my password was incorrect. I had an Epson printer more than ten years ago; I don't remember the password and they don't provide an option to reset it. HELP, PLEASE.

Youtube just does not run well on the firefox browser, I have had this issue on my pc, as well as my laptop. Twitch, piracy streaming sites, 9anime all work fine this problem with loading and buffering is exclusive to youtube. I have tried resetting my firefox settings, changing the values for load times and resource usage in about:config and none of these have fixed my youtube.I have tried multiple fixes I've been recommenced by online forms. I have switched my user agent to make youtube think I am using chrome, I have disabled and removed all of my extensions including ublock origin, and loading youtube remains painfully slow. In fact, disabling adblock makes the load times even slower.

Also responding to my post with "hmmm durrr it works just fine for me" does not help anybody, stfu.

I just installed Firefox. What I noticed right away while using it was that fonts were very blurry/hard to read on all web pages, and even in firefox's menus and URL bar.

I attached two pictures, one is a screenshot in Firefox, and the other is a screenshot in Brave. (All chromium web browsers I have tried don't have firefox's font problem)

The thumbnails can be momentarily seen but within less than a second they disappear. Not happening in edge so doesn't seem to be a computer setting. Cleared all cookies and cache in firefox. No different. The attached image shows the pictures that are missing in firefox. Image taken from an Edge search.

Thank you in anticipation. Steve Balderson

Hello,

I created a 1+-minute video on my YouTube channel and then posted it to my GoogleSite. But Firefox will not allow it to play because it is embedded from another site. Can you kindly help me understand how to get around this?

My goal is to create content on YT that only I can embed on my site. Yet it does not seem that there are options allowing for this. My desire is to share some wondrous FREE visual content AND to protect it by funneling it to my site.

Please know that I am not a techie as you most likely are, so your explanation is appreciated. And your assistance! Thank you. MC { yt is @ starbrightone7 } { website is wwwDOTharmoniccoherence.co ... the ABOUT page }

So, today i opened up my firefox and loaded up youtube; it didn't load. I tried to check my wifi speed on speedtest by ookla...the website didnt work. Then i went to reddit to see if this was a bug affecting everyone anddd that also did not work. So, basically half of the websites that i use do not work right now and i can't figure out why. Everything was fine till yestderday and i havent changed any settings. Also, Wifi speed is not the problem here as i opened up ms edge and everything works.

Please help! Here's a reference image of how websites look ( imgur ) Funnily enough, imgur also did not work of mozilla.

I've been using Android/google messages on web (messages.google.com/web) for years with Firefox with no issues. Starting today, the page will show the logo for about 10-20 seconds, then loads a blank page. I've tried unpairing, restarting my computer and phone, and restarting firefox. Was there a new update or something that might explain this? Any other thoughts?

please forgive me for asking again, but I REALLY need my addons to work. Firefox disabled my addons, forcing me to upgrade to a version of firefox that I don't need, since the old one was working just fine. The new version does not seem to appear to have downloaded properly, and neither version is allowing my addons to work or be re-installed. Please explain it to me like I am 5 years old, and help me to get this fixed without losing any of my info that might be stored in the addons.

 Thank you.

please forgive me for asking again, but I REALLY need my addons to work. Firefox disabled my addons, forcing me to upgrade to a version of firefox that I don't need, since the old one was working just fine. The new version does not seem to appear to have downloaded properly, and neither version is allowing my addons to work or be re-installed. Please explain it to me like I am 5 years old, and help me to get this fixed without losing any of my info that might be stored in the addons.

 Thank you.

Recently, my bookmarks have disappeared (but leaving empty folders), reappeared, or reappeared but incompletely. (incompletely meaning not all showed up - alphabetically, only bookmarks beginning through letter "D." When I search bookmarks, the "missing ones" show-up in the results; they are just not visible in the toolbar. Similarly, if I try to add a new bookmark, it does not show. Help! thanks

During what I assume are high bitrate sections of YouTube videos (e.g. lots of movement, high resolution) YouTube will constantly drop frames.

Video for example: https://www.youtube.com/watch?v=KLuTLF3x9sA

I have tried: • Safe Mode • Installing the Flatpak and testing in that, which also has a fresh profile as I don't use the Flatpak version • Testing different related about:config settings – I can't remember them all now, but I tested every one I found googling that is related to the issue or hardware acceleration.

Hardware acceleration is for sure working. Turning it off makes the video drop to one or two FPS.

Chromium has no problem with the same video. However, you can see from the screenshots that both read the resolution/scaling of my screen differently, and it implies that Firefox is rendering something like 6314 x 3552 while Chromium is rendering at UHD, the resolution of the screen and my video. If I turn off all my Global Scaling, Firefox stops dropping frames (the same info box on YouTube states resolution is UHD), reinforcing my theory about scaling being the issue. Both are confirmed to be using native Wayland.

System: Linux/Fedora41 Firefox: 136.0.4 Monitor: Acer 27" 1920x1080

When I open a FF window, it opens full screen vertically and to some width horizontally, both dimensions not desired. My usual style (for the MANY years I have used FF and Linux) is to use a FF window that is NOT full screen in either dimension since I normally have multiple windows open simultaneously. This FF behavior has started just recently.

This behavior occurs when starting FF from the FF icon on the desktop, when opening a new window from the FF main menu, or when opening a new window via the 'Open Link in New Window". (Perhaps other ways as well: these are those I encountered.)

I have tried: .... Opening FF/resize window to desired size/close FF using 'Quit': no change on restart .... Deleting the xulstore.json in the profile folder/restarting FF: no change on restart

I would like to restore FF to its previous action: open new windows at the same size as the last one referenced. Can someone help?

Thanks.

Bill Lee

Firefox recently sent out its monthly newsletter (Oct '25) with all sorts of options that can be enabled on Firefox. I'm a computer illiterate & foolishly chose some of the options -- don't remember which nor know how to discover them.

Now javascript is no longer enabled on my MacBook Air (macOs Big Sur 11.7.10). I cannot access my protonmail account and many many other sites.

I've gone cross-eyed accessing "fixes" that are labelled "only for advanced users" & am bright enough to not even try.

Is there a simple fix (short of wiping my computer -- with data going back 11 years) that even I can do?

If you have "fixing your firefox for Dummies" then please email me with a solution. [edited email from public community support forum]

I went to my favorite web site this morning (dpreview/forums) and when it displayed I must have accidentally clicked some Firefox thing because the page was then overlaid with a thin orange highlight with the word PICK on it. I tried moving the cursor off the page but it only changed which segments of the page were highlighted. So I clicked and the page was replaced by just the menu section of the page, apparently that was what was highlighted when I clicked.

Now, no matter what I do, when I try to go to that url only the menu is displayed, the normal list of forums is missing. I've restarted FF. I've rebooted. I've cleared cookies and cache. I've refreshed the page. Nothing helps. Other web sites are fine. I can't imagine what this is for. A diagnostic tool or accessibility thing perhaps.

Please help. I'm running latest FF on latest Win 11.