Firefox Community Forum

When I watch YouTube videos, Firefox behaves strangely. After a few minutes of watching, I try to scroll to the comments, and then Firefox starts to lag. Scrolling becomes very sluggish, and the entire image freezes while scrolling. The website stops responding, but the sound continues. The only way to fix this is to minimize and then maximize Firefox. Then I can scroll again and the problem starts again. This problem occurs regardless of whether I clear the cache, use an ad blocker, or which screen I'm using Firefox on. Sometimes, one of my screens even freezes and displays stripes. However, this only happens when I'm using Firefox and YouTube. I have no problems with any other applications for exampmple playing games on one screen and let music streaming app playing on the other screen. Even my Cubase 15 work like sweet on booth screens without errors. Why is firefox acting so strange? Firefox never completly stops or closed itself.

Firefox Version 157.0 (64-bit). AMD Software: Adrenalin Edition 26.8.1. Windows 11, version 26H2 installed October 1, 2026 (previous updates also had the same issue with firefox).

I also got some Firefox Updates when i opened it. I was hoping they catched the issue but it seems like the same.

Have a great day :)

I have a bookmark which I use regularly but, with the new version of Firefox, I get the error message NS_ERROR_NET_EMPTY_RESPONSE. I can access the webpage OK on my iPhone. The website is :- http://rasp.stratus.org.uk/app/viewer.php

Firefox 157.0 (aarch64) macOS Tahoe 26.7.1

When I click on the link to a PDF to open it in Firefox and click on the Save icon in the file viewing UI (see attached image pdf-save-icon.png) to save it to my local device, no File Save dialog box opens and nothing happens.

If I right click on the link to the file instead of opening the file, the file is saved silently to the Downloads folder with a name that ends in .pdf.part (see attached image filename.png). That typically indicates a partial, failed download, but in this case, if I remove the .part from the filename, the result is a viable PDF.

I often use the process manager to find open tabs, since only the front one in each open window shows up in the Window drop-down menu. (And I sure wish those windows would read as the WEBSITE and not the specific page name, as it often gives no help in knowing what website it is)

However, sometimes, like just now, it won't show one or more open tabs! Why? Today I was looking for my Google Voice Messages page, and did not see it anywhere in the list. I thought, maybe I had closed it, but when I manually scrolled through all my open windows, I found it on one of them! Can we not count on the process manager to show us all open tabs?

I accidentally wiped out my customization of the firefox app. I do not want to save search history, websites visited after I close down firefox. How do I do this? I want to retain the short cuts to websites

In my Settings, the browser's fallback language is set to Portuguese, without giving me any other language choice, nor leaving it blank. I assume this is the reason I keep seeing menus, notifications, etc., randomly popping up in Portuguese.

I have not been able to easily access my bookmarks easily like before. I have multiple bookmarks by category, but there does not seem to be a way to access the different categories currently. I have Windows 11. I have the most current firefox browser I think. I did find from searching support that I could type Ctrl Shift O and scroll down which gives a long list to try to access them, but that is very cumbersome and slow. Do I have to do that every time I want to go to specific bookmarks? The bookmarks that show on the overflow or near the top of the screen are not useful, but the ones I use every day cannot be accessed easily, but are way down a long list. Why is the current version hiding all the bookmark categories?

Every time there is an update, Firefox creates a new profile and hides all passwords etc. It is therefore impossible to work with it now. With 157 I now have a worthless Firefox, because all links, passwords, settings etc have been cleared and a new profile has been created.

When the new update arrived yesterday, I started getting multiple popups from McAfee & Mozilla. Three stay on the screen at once, and when I X one, another appears instantly. This appears to be a scam trojan, but 3 different excellent anti-virus programs have not found anything. This never happened until the latest update. What do you know about this? I don't want to uninstall & start over, but what other suggestion do you have? p.s Usually when I right click on one of them, it takes me to a McAfee ad. I just clicked on one that gave me the option to turn off notifications. That seemed to stop it, at least for now. Am I the only one with this problem? [redacted email from community support forum]

Previous to the recent update I was able to click on a hyperlink, it would load then automatically download the pdf and then automatically open in Adobe. Now it just opens in Firefox. I have changed the settings to open downloaded pdfs to Adobe but it still opens in Firefox and does not download. I have tried changing the PDF setting to save automatically and it still does not download or save it just opens in a new tab in Firefox.

Lately, I cannot get to staples.com. I think it started after the last update, but I'm not sure. I never had a problem before, and Staples is a well-known national company for office products. I've restarted Firefox in troubleshoot mode, but the result is the same. Chrome and Edge have no problem accessing the site, so it's a puzzle why Firefox cannot. If anyone has any ideas about how to proceed, I'll appreciate it.

Title. Whenever I click the profile button on just this profile, it doesn't give me the option to switch to different profiles. This problem doesn't exist on my other profiles.