Diễn đàn hỗ trợ Firefox

Firefox is having issues opening files in my tempdir directory. Opening a file directly, via File -> Open, there are no problems. But, when using either drag-and-drop or when trying to open an attached file from Thunderbird I will get something like the following:

File not found

Firefox can’t find the file at /tmp/pid-15374/etfExpectations_2022-04-22.pdf.

   Check the file name for capitalization or other typing errors.
   Check to see if the file was moved, renamed or deleted.

When I start to type a reply to a Facebook post, the page scrolls down so that the line I am typing disappears one line below the bottom of the screen. I have to scroll down to see what I'm typing. Also, it jumps down the same way whenever I hit the backspace key to edit what I'm typing.

I discovered a previous (archived) post on this forum that suggested using "about.config" and making sure that the value setting for browser.backspace_action is equal to 2. But that didn't change the annoying behavior. Is there any other value I should try? It's not clear what the number means.

Nor did setting browser.backspace to true (or to false) seem to help with the unwanted jumping upon use of the backspace key.

This only seems to happen with Facebook, but it's quite annoying.

my pc had friend so when i got a new one i lost all of my firefox data, how can i get all of it back so i was forced to start all over, i lost all my, bookmarks, tabs, history and saved passwords

When I use Firefox on my Mac, no matter what I have tried it keeps defaulting to the dreaded Bing Search Engine. I understand it has to do with Microsoft, but I don't use any of their products because I don't like them. In settings/search I can restore the default search engines & delete Bing, but it always reverts back to insisting on using Bing again. I have followed several threads about this issue without permanent resolution. Help??

After firefox update to 100.0 - i can't use any of my addons, and cant install new one. All my current updates appears in "disabled" status, and there's no "enable" button. I have many addons, so it's the global problem.

Also, i can't install any of updates from addons.mozilla.org, i get message "Installation aborted because the add-on appears to be corrupt". All addon xpi files are downloaded without problem using "save as", also, after clicking "install" on addons website i see download progress.

Please help to resolve this issue!

After the latest Firefox update, some of my sites are returning "Network Protocol" Errors. I can log in on other browsers, but Firefox is the one I normally use.

Until recently, I resisted allowing updates for Firefox because of the announcements of changes to prevent access to some technical kinds of website which I use. These include the public websites of the Paris Observatory which include useul informational ftp pages with important text, data and software files.

  I did recently allow a Firefox update, and now I find that I am cut off from access to these ftp pages. 
  How can I re-enable access to ftp? If it can't be done in the new version of Firefox, how can I return to an older Firefox version that does allow such access?

Firefox crashes when switching between tabs. Worse than usual crash, the last page i was viewing is there but unresponsive to mouse or keyboard including contr-alt-delete. Must push and hold the power button on my Dell XPS8940. Windows 10 Home 21H2 OS Build 19044.1586. Windows Feature Experience Pack 120.2212.4170.0.

There was a window with 7 tabs, 1 playing a youtube video and 5 with videos not playing, one other site with no audio and another window with a website streaming only audio. When the system stopped, the speakers made an odd sort of buzz sound until powered off. I am on the latest version FF 99.0.1 but a similar crash happened on version 98.0.1. Before that this Dell never locked/crashed up this way.

This Dell PC has Realtek audio just like our HP W10 laptop and they both had issues when new with all sound not working when playing a youtube video only in Firefox (HP Feb 2021 and Dell Oct 2021). Launching Groove Music and playing an mp3 always got the sound working. Problem did not cause any program to crash. Windows updates to drives eventually fixed the problem but it only even happened in Firefox. Current problem is new in the last month or two and only on Dell.

I opened Firefox as usually, but passwords are missing, only logins are available. There is also a file called logins.json-1.corrupt in the profile folder.

Renaming it back to logins.json with restarting the computer does not work.

There are no previous versions of these two files available in the system.

Please let me know how I can recover passwords, may be with a special software.

Thank you!

I have installed two dictionaries, "English (United Kingdom)", and "French". However, when I go to check a spelling, (right click/Languages over the suspect word), I am offered a third dictionary choice, "English (United States), which I do not want. I have removed the US dictionary and even the language pack but the menu item persists. I can find no way to get rid of it.

Please advise

There are a number of old threads regarding this and having worked through them it is still unresolved. 1) I have cleared cache/cookies 2) I have disabled all extensions 3) I have turned off tracking 4) I have tried in safe mode - still the same.

This is not just on one website - it is on ALL that have Facebook feeds. It is NOT just on my laptop - I have asked others to try - they have the same result - blank page. ...so please don't suggest re-installing Firefox!!

An example is: https://dragonsdensoftplay.co.uk/News-Events/news-events.html

The feed works ok in other browsers.

Thank you

I am having a weird issue in Firefox. This issue happens on all websites, in all text entry fields of any kind.

It is like there is another 'ghost box' overlapping each entry field. It is hard to tell in the pics (was hoping I could post a video), but in the first one you can see the cursor is slightly lower than the actual field. If I type, nothing will appear. Then if I click again, a bit higher, I can type into the actual field.

I have never seen this before but it happens on ALL websites. It is a bit frustrating having to re-click all the time. Also, I was getting concerned there might be some keylogger or weird virus on my machine. Any ideas what is wrong here?

Hello :) For some time now my firefox doesn't allow me to preview PDFs. If I open it, it gets downloaded at the same time which I don't need. I already tried the thing with renaming the handlers.json to handlersOLD.json but it didn't work :( does anyone know how to fix this?

Hi and thanks for your good app The following website is not loaded in the Mozilla version, but it is easily loaded in EDGE How can I open this site with Mozilla? website : https://app.setareyek.ir/

I use Last Pass for passwords & it's worked in the past on Firefox. After updating Firefox, the Last Pass extension in by toolbar is black - in the past I would click that, open the Last Pass page to sign in, then the icon turns red and functions. Now when I click the icon a frozen page comes up that never loads. I can sign in to the Last Pass webpage, but that doesn't turn on the extension.

Any advice appreciated - thanks!