Firefox 技術支援討論區

Hello all,

I run a bunch of web applets locally on my computer for personal use only (http://localhost/...), and until recently I could successfully launch FF using window.open(...) with the new window NOT showing the address bar (because it takes space and looks ugly within the applet, so I want to avoid it at all cost).

I believe this changed with FF 76 (I now run v. 76.0.1 64-bit on a Windows10 based computer), anyway at this point it seems impossible to NOT have the address bar show up in a FF window. :-/

To be clear : I have searched for a solution in this forum and elsewhere, found the solution to another new problem with FF ("megabar"), also seen the trick to hide the url in the address bar - but this is not what I'm looking for : I just want to *get rid of the address bar*, period.

Thanxx in advance for any help with this issue (surprised noone else seems to complain about this). :)

Windows 10 gesture two finger swipe left and two finger swipe right doesn't work in Firefox. Two finger swipe left allows user to go history backward and two finger swipe right allows user to go history forward. These gestures work in Firefox if the user hold Alt key and preform the gestures. But most of the users don't like to hold Alt key and preform the gestures. Please fix that issue.

Good afternoon folks I can't watch Netflix on my Firefox browser. Do you know why is there a plug-in what is missing or something? He says the version is not up to date While my Firefox is always up to date, can you help me further. Thanks in advance from Trimmy.

As the title indicates, copy/pasting does not work.

I'm on Windows 10, have installed Firefox about two days ago (I've recently switched to it) so the version of FF is up to date. I've looked up a few fixes before posting and they didn't work:

- Tried booting FF on safe mode and it didn't fix the issue - it clearly isn't caused by an add-on (and I've never had this issue in my previous browser with nearly the same add-ons installed). - other people seem to have had the exact same issue multiple times and it's lasted for years, so it's clearly a problem on FF's end.

Here is the issue described more specifically: Copying things from a tab from FF and into the online version of Word does not work - when I try to, the intended selection: - disappears a few seconds after I've pasted - or it does not appear at all - or when it does, it erases the entire sentence it was pasted next to it, which you can imagine is absolutely bothersome.

I've also tried to copy/paste statistics from a site called archiveofourown.org onto another FF tab. - What ended up being copied is only the last character of the entire content I was trying to paste, which I think suggests there's some issue with what's contained in the clipboard.

I'm mentioning these two websites because I'm guessing that something about them is probably conflicting with the copy/paste feature, however I'm hoping no one will have the gall to tell me it's those websites' faults and that I should just stop using them.

When pasting (while having hopefully copied the former selected content- and no, it wasn't the case), it always pastes the content which was last copied into the clipboard prior to that very attempt, which shows that the clipboard's content was not refreshed with the last selected copied one.

I'm surprised to see that FF has had such a glaring issue for years and for many other users, and updates have never given a fix for it. I'd like this issue to be fixed properly, because I'd hate to have to switch back to my previous browser. FF sports so many nice features that other browsers don't have, and it'd be a shame to ruin the experience with a bug so basic as the copy/paste feature being broken.

I have been using Firefox for the past 2 years, but only recently have I noticed that Firefox is using 1 GB of RAM! It never increases or decreases and its getting very annoying now since I have barely any RAM to run zoom with (which for some reason takes up the rest of my RAM). I can't even run anything else, and thats annoying me a lot since my fan has to keep running. I can't upgrade my RAM because I use a laptop, and my laptop is under warranty and I can't afford to lose the warranty by upgrading the RAM. Is there any other way to decrease memory usage beside using about:memory and pressing the "minimize memory usage" button? Nothing happens when I press the button.

Hi Firefox start to take a lot of CPU depending on how many tabs are opened (that is normal of course especially if with flash contents). What is not normal is that CPU will not be released when tabs are being closed, even with one (blank) tab left opened CPU usage is 40%-85% (depending if other process need CPU). Essentially: once Firefox process obtained 80% of CPU you can close tabs but you are fucked the same, now opening new tabs is a pain! Of course restart fix the issue. Is not a matter of addons or updates, Firefox and system (Windows 10) are updated to last version; I feel is something related with flash contents. Is it possible only me experience this?! Regards

dear ladies and gentlemen,

Firefox has been delivered with the new print dialog since version 82.

I have to print around a hundred PDF files at work (usually only the first page of the document). The new print dialog means that there is a lot more work for me here.

Is it possible to set the "old" system print dialog by default or to instruct firefox to always print only the first page of the document by default?

i am trying to download a file (about 50gb) and the download keeps failing. When i click reply the download continuous. It downloads fine for a little bit then it fails again. Keep in mind when i click the trry agin button the download does not restart, it just continuous to download where it left off. (sort of like just pause and unpause) what should i do?

Hi,

I brought my computer to Best Buy for some audio issues it was having. They reset my OS and drivers and now I lost all of my Mozilla Firefox bookmarks and passwords. I do not have a recent JSON backup file. How can I recover these?

Thanks.

Error message: E:\Users\Sarah\AppData\Local\Temp\xxxxx.xxx.part could not be saved, because the source file could not be read. Try again later, or contact the server administrator.

I do want to mention upfront that this issue is also affecting Chrome and IE. It's not solely a Firefox issue, but I'm hoping someone here can help me anyways.

• This happens for any filetype, from any source.
• It started happening about a month ago.
• Prior to that, I installed a new motherboard, RAM and processor. I'm fairly certain there was a period between these events in which it worked fine, but I am mentioning it just in case it's relevant.
• If it's a small file and I try repeatedly, it sometimes will eventually download.
• Even if a large file successfully starts downloading, it will eventually fail. It usually fails immediately though.
• I sometimes have success downloading the same file in Chrome, but it also often fails. IE as well.

I have tried the following:

• Used Refresh Firefox
• Cleared download history
• Changed download location
• Reset browser.download values
• Disabled firewalls and antivirus/spyware
• Reinstalled Firefox using Run as Admin (first uninstalled previous version and deleted all program files that I could find, including profiles)
• Cleared cookies and cache
• Ran in safe mode
• Verified Temp folder filepath was valid
• Verified the PART file was created in that path -- it exists until I hit OK on the error message, then it disappears
• Ran Firefox as admin

I think these are outdated methods I only found on non-official sources, but will mention them just in case:

• I found some sources that said to delete Compreg.dat; I could not find this file in the place listed, nor could I find it with a search of the entire drive
• Verified places.sqlite was not set to read-only
• Removed read-only from entire profile folder and subfolders

In Options > Security: 'Block dangerous & deceptive content': true, 'Block dangerous downloads': false

Internet speed test: 58.96 Mbps download; 148.04 Mbps upload. No connection loss.

This problem is absolutely maddening. I'll be so grateful if anyone can help me out!! :( Thank you in advance, I know this was a long read!

(Edited for readability)

How can I change the DNS Server in FireFox to whatever DNS I want and not what Mozilla wants?

For example: Google DNS 8.8.8.8, 8.8.4.4 or, Open DNS 208.67.222.222 · 208.67.220.220

Enabling DNS over HTTPS dose not give me FULL control over this. I should be able to put a DNS IP address in there like in Internet Explore.

Youtube was working fine but now it gives me the error message "An error occurred. Please try again later. (Playback ID: uFCV2ClQxLQMYdFX)"

I cleared cache, refreshed the browser, restarted, disabled ublock and logged out of my YT account. Still doesn't seem to work.

Youtube works fine on other browsers like edge and chrome.

Hi! I found a strange thing today. I wanted to open an ftp link and firefox asked me in which app I wanted to open it. Of course I wanted to open it in Firefox, but the only app on list was Internet Explorer. So, I added Firefox to the list, but I couldn't open the link with it, because when I marked Firefox and tried to click "open", nothing happend and the box still appeared. So, I ended up using IE. I'm using Firefox Nightly (81.0a1 atm of encountering this).

As you all might know, TLS 1.0 and TLS 1.1 have reached their End Of Life, and are no longer supported. I have looked inside the latest firefox (77.0.1 (64-bit)) configuration, and found the following configuration set by default (included in the first image).

I attached a picture of my firefox about page, hope to receive an answer soon.

Thank you, Guy

Firefox was updated to v82.0.2 yesterday, and since then I'm getting this error using Firefox to connect to my NetGear ReadyNAS admin page, which uses the original self-signed certificate. Secure Connection Failed

An error occurred during a connection to anemone. Certificate key usage inadequate for attempted operation. This is the error:

Error code: SEC_ERROR_INADEQUATE_KEY_USAGE

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem.

Learn more…

It doesn't even display the certificate or give me the option to "Continue anyway". I have to use Chrome to connect, which make me even more unhappy! With the previous version of FF, I could log into the admin page. I should have the option to accept that the connection isn't trusted, and continue to work. This NAS is in my home network behind a router and admin access is password controlled. That's safe enough for my purposes.

Hi, When I click on a link on a page, I want it to open it in a new Tab and leave the page I'm on alone.

Instead, it overwrites that page with the new one, and I have to hit the back button to get back to that original page (and sometimes the back button get grayed out and I can't get back at all).

I've tried checking the box for: Open links in tabs instead of new windows but that doesn't do it. Then I tried checking the box for: When you open a link in a new tab, switch to it immediately, and that doesn't do it either.

I know that a work-around is to hold down the Ctrl key while clicking a link, but I'd like to set it as a default so I don't have to do that.

Any ideas? Thanks!

I'm using Firefox 85.0.2 . . . I was doing this (below), to customize my header and footer, but in this version of FF, I no longer see this in Options - only in: about:config . . . keyword "footer" . . . there, I would have to change it for 5 different ways of printing (to printers or to PDF)

I need to get rid of printing the URL in the footer - many times, it's too long, and I don't need it.

Where did the Page Setup option go?

I see in the current Print Options, you have to go to - More Settings / Margin / Custom - to see those. Why would they put this so many levels down?

It used to be: File / Page Setup / Margins & Header/Footer . . . "Customize" Headers & Footers:

Option 1 (left) . . . there are two leading spaces:

 > > &T
 > > &U . . . &D . . . &PT

Option 2 (left) . . . get rid of the ">"s, and just have the two leading spaces:

 &T
 &U . . . &D . . . &PT