Firefox 社群討論區

when i first logged into my firefox account from my new pc it worked but it didnt have any data like cookies bookmarks passwords i thought i might have logged into a account i dont use but when logged into a alt email i have those didnt have any data either so i deleted the alt account i accidentally opened i logged back into my normal account and shut down my computer since i wanted to leave it for another day

i remembered that i had my firefox account opened on my laptop so i decided to give it another shot turns out i was right the first time with the first email it just didnt sync well when i opened my new computer i saw that i was logged out of my account i tried to sign back in but it kept popping up with the same error every time "unexpected error" since then ive tried countless ways to log back in but it just doesnt seem to work any help would be appreciated

thank you Fis

Hi-

In the past week or so, I suddenly stopped being able to download/save files or upload files from Firefox. I get a message that says something like "You don't have permission to open this file". This happens regardless of the location of the file (ie locally on the device, a USB drive, a server drive, one drive etc.).

This happens on two different workstations, one is Windows 11 and one is Windows 10 but both use the same Windows login.

If I try a different browser, I am able to save or upload so I don't think it is a network permissions issue.

im loged in to firefox and i want to change from 1 of my profiles to another one of my 3 profile but it wont let me choose on of the other profile it show them to me but cant pick one ?i have work to do and i cant get anythiing done because of this ?

I regularly and repeatedly get errors messages similar to the one below:

   Server Not Found

   Firefox can’t connect to the server at www.filepuma.com

   'What can you do about it?

   Try connecting on a different device. Check your modem or router. Disconnect and reconnect to Wi-Fi.

I can find no way to correct this. Can you help?

I have been using a new windows 11 laptop, but which hasn't been able to import my favorites/bookmarks as well as password data from my previous (also running firefox) Windows 10 laptop. I performed syncing, but which didn't seem to help.

I was watching some German video (not on YouTube) and needed the subtitles translated into English. The translation itself was great, but as the video went the subtitles were switching from original language to translated, making it almost impossible to read them. The subs are fine when I press 'pause', but pressing it all the time in the moment of a long dialogue for example is inconvinient. I wonder if there's a way I can fix it myself in the browser's settings, or if it's a bug that will be fixed in future updates

Some files that are visible in my PC's directory are not visible to Firefox to upload to attach to a Google g-mail, even though they are visible and uploadable to g-mail in Chrome. I created 4 similar (all pdf) files (printed from Adobe), but only 2 are visible to Firefox!!??

This has happened before. I try re-creating the invisible files, but have no success.

Unless I can fix this issue, I'll have to stop using Firefox.

Hello Mozilla Support Community,

We are troubleshooting a cross-origin resource sharing (CORS) issue specifically occurring in recent Firefox releases when processing custom B2B appointment requests.

Setup & Context:

Our production application, Frontline Sales Consultancy (flsc.co.uk), triggers a client-side fetch request to an external CRM gateway.

The request works seamlessly on Chrome and Edge, but Firefox throws an NS_ERROR_DOM_BAD_URI during the OPTIONS preflight check.

Observed Behavior:

Firefox Web Developer Console shows the preflight request failing before headers are evaluated.

Access-Control-Allow-Origin and Access-Control-Allow-Methods are explicitly declared on our origin server.

Does Firefox handle strict MIME-type checking or preflight caching differently for custom HTTPS API endpoints?

Any insights into Firefox-specific CORS strictness or network console debugging flags would be greatly appreciated.

Thanks!

Seit dem letzten Update auf 153.0.1 sind alle Lesezeichen aus der Lesezeichenleiste verschwunden. Die Wiederherstellung aus der .json- Datei in meinem FF-Profilordner, in dem sich die 12 Einträge befinden funktioniert nicht. Wie kann ich die Lesezeichen wieder herstellen? Ich habe keine Admin-Rechte.

Leider hatte ich FF auf automatisches Update eingestellt, das hab ich jetzt ausgeschaltet.

I have been using my userchrome.css for many years.

However, now Firefox ignores css style for all menu backgrounds after upgrading to v152.

Here is my current userchrome.css text: /*tighten drop down menus*/ menupopup > menuitem, menupopup > menu {

 padding-block: 1px !important;

}

root {

 --arrowpanel-menuitem-padding: 1px 1px !important;

}

/* changed this block ----------------------------------------------------*/ /* #bookmarksMenuPopup hbox {background:#CD5C5C !important;} */ /* /Change highlighted menu text to any color:/ */ /* menupopup > menu[_moz-menuactive="true"], */ /* menupopup > menuitem[_moz-menuactive="true"], */ /* popup > menu[_moz-menuactive="true"], */ /* browsermessage,notification .notification-inner{ border-color: red !important;} */ /* browsermessage, notification{ background-color: red !important;} */ /* menupopup { */ /* -moz-appearance: none !important; */ /* background-color: #CD5C5C !important } */

1. bookmarksMenuPopup { --panel-background: #CD5C5C !important;}

menupopup > menu[_moz-menuactive="true"], menupopup > menuitem[_moz-menuactive="true"], popup > menu[_moz-menuactive="true"], browsermessage,notification .notification-inner{ border-color: red !important;} browsermessage, notification{ --panel-background: red !important;} menupopup {-moz-appearance: none !important; --panel-background: #CD5C5C !important }

/* other bookmarks */

1. menu_unsortedBookmarks,
2. menu_mobileBookmarks,
3. bookmarksMenuItemsSeparator{

display: none !important; }

/* hide Bookmarks Toolbar Folder */

1. bookmarksToolbarFolderMenu, #bookmarksToolbarFolderMenu+menuseparator {display: none !important;}

menupopup > menuitem, menupopup > menu { /* color of the text */ color: red !important; }

menupopup > :is(menuitem, menu):hover {

 background-color: lightskyblue !important;

} ((

menupopup:not(.in-menulist) > menuitem, menupopup:not(.in-menulist) > menu {

 color: white !important;

}

/* Global UI font */

• {font-size: 14pt !important;

font-weight: bold !important;}

However, now all my menu backgrounds (e.g File, Edit, Bookmarks, etc, see attached screenshot) are black with a see through background.

I would like to return to my original menu settings backgrounds. How do I do it please?

Thanks in advance.

is there any way to disable the screen recording ban? my job really needs me to be able to access clips of videos so downloading the whole video is not an option, but recently it seems firefox banned that. is there any fix or do i need to switch browsers?