Firefox Support Forum

Hello,

I am experiencing an issue related to the Vanguard anti-cheat system used by Riot Games, specifically in relation to League of Legends. After installing the game and Vanguard, I am unable to open Firefox. When I try to launch Firefox, nothing happens. However, if I change the name of the firefox.exe file, I can start Firefox on a different profile, but it only works for a short period before becoming unresponsive. None of the options or tabs respond after that.

Could you please provide assistance on how to resolve this issue?

Thank you.

I am experiencing no window to enter my credit card number in. There is the window for the expiry date and CCC code. Just not the card number. I have tried numerous websites that I would never buy anything from just to test the failure and it repeats on all the sites I have tried including government payment site.

So I have an issue where I am unable to reorder or detach tabs after having detached one tab. When I start Firefox I am able to reorder my tabs as much as I want, but once I detach one tab both functionalities do not work anymore.

- Firefox version 126.0 on Kubuntu 24.04 - After restarting Firefox I am able to do it again once - After rebooting I am also able to do it again once - The same issue in private window - I have refreshed Firefox through Help -> More troubleshooting information - Disabled all my add-ons - Tried it in Troubleshoot mode

I cannot seem to find a real answer online. Does somebody here have a solution for me :-)?

My Firefox tab keeps crashing on a particular website. Whenever I go to twitch.tv, the site begins to load and then I get the "Gah. Your tab just crashed." screen. I'm only getting this crash on twitch.tv pages, and this issue just started on May 31, 2024. When I try to open a twitch.tv page in Private Mode, the page loads just fine. I've never had a Firefox tab crash prior to this.

I've tried turning off all of my Firefox extensions, but that didn't solve the issue. I also tried opening Firefox in Troubleshooting Mode, but I still got the tab crash. I'm using the latest version of Firefox as of today's date.

Hi,

If I have an unloaded tab on right of the current tab and I close the current one, instead of going to the right tab, which is the unloaded one, it jumps to another tab which I'm not sure has what relation to it, it certainly is not the tab that opened it.

I removed every modified entry of "Browser.tab" in About:Config, installed "Select After Closing Tab", no result.

Thanks

As title- Cannot download for example webm format, but jpg is okay. cannot install any addon, theme or anything. DRM didnt install as well. i was trying reinstall, refreshing browser, rebooting.

If you close a tab that is next to one or more unloaded tabs, firefox jumps those and opens the next one that is loaded. Is there a way to disable this so upon closing it would open the right tab, whether loaded or not. I tried "Select After Closing" add-on, didn't fix it. Disabled Auto Unloading via about:config, same result.

I am getting "Secure Connection Failed", Ive seen literally hundereds of same error also exist here. Like most of default solution (which is below) did not work for me. My laptops time is correct, And I highly doubt reddit and most of internet has issue with its security certificates. And other browser works just fine. So What is my solution other than immigrating to new browser?

https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect?as=u&utm_source=inproduct

Hi, I've recently downloaded firefox and trying to add extensions that were similar to the ones I used on chrome. My problem is that all the extensions (Hoverzoom, Short Keys) in the extensions tab in the toolbar and appear to not be working (both in private and normal browsing). However the extensions (Ublock, SponsorBlock) that have their own icon on the toolbar seem to be working fine.

I've attached a reference image,

Any help would be greatly appreciated.

More than half of the websites are broken when viewed in Firefox now E.g. theguardian, youtube. It takes way too long to load and most of the time it's only part of the page. The same websites work on Chrome and Edge without any issue.

And then I try to upload screenshots (.JPG) to this form and it doesn't work?

When using amazon the login and page load times are excessively long. More often than not I can open MSN, load amazon, login, and find what I'm looking for before Firefox has completed signing me in or searching for an item. This is not a once in a while problem, it happens every time with amazon, some times worse than other times. Ive deleted and reloaded Firefox, cleared all history and tried as many other things that I could find online to try, none of which helped.

If I open a second tab on the screen it says the connection has crashed and keeps doing it if you try again. If you reset it resets Firefox including the other tab.

When I do right mouse click on page, depending on the mouse cursor position, context menu appears and I need to scroll up or down to access appropriate item. I thought I need to try and fix size and position of a page context menu. Is it possible? I believe it may depend on the screen size and resolution and how many entries add-ons add to right click menu. Examples: https://imgur.com/nocb5kK.png https://i.imgur.com/yNeNJQh.png

On Edge or other search engines I've been able to highlight, copy and past a web address where the pasted result is a clickable link to the website, but this doesn't work for Firefox. I have looked through the settings and other questions online, but found no solution, from what I can see people more often ask about the opposite issue to mine. Is this a limitation of the search engine or am I dumb?

I am trying to use firefox to replace Google and their stupid ads. I got google calendar to auto load with firefox but not all my calendar activities. Can you please tell me how to get it to work properly. Thanks.'

I have recently been getting an error message when I open Firefox saying "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem". This has been happening since I clicked on a mail in Mail to unsubscribe from a spam/phishing mail list, which seemed to result in me installing Firefox Private Browsing, which I had never subscribed to. I have tried uninstalling Private Browsing but there is no way of doing that. I have even uninstalled and then re-installed Firefox completely but I still have the same problem. Because of the problem I have now lost all my bookmarks and history, and am unable to create new bookmarks and history. I have been on the help forums and seen that I can Disable Private Browsing by going through my anti-virus (Avast), which I have not yet tried because what I would really like to achieve is uninstalling and not having Private Browsing on my Start menu, rather than simply disabling it. Anyway, would disabling it solve the bookmarks and history problem ? Can anyone give me the solution ? Thanks. As you may gather, I am not very techno so you would have to give me the idiot's version of any instructions or advice.