Diễn đàn hỗ trợ Firefox

My page throws errors in Firefox Nightly such as

Expected color but found ‘undefined’. Error in parsing value for ‘background-color’. Declaration dropped. preview.htm:1:1

and

Expected color but found ‘undefined’. Error in parsing value for ‘color’. Declaration dropped. preview.htm:1:1

The page references ten CSS files besides having dozens of its own CSS declarations. The issue is tha the reference provided to the error (:1:1) does not indicate where I can find the error. That is, I don't know which declaration is at fault. Is there some straighforward way to find the declaration in question?

I am going round in circles. The last Firefox update reset my Firefox on my laptop to default settings including losing my master password. I started to reset all my old settings but when I got to the part where I setup the sync with my phone version of Firefox, Mozilla asked me to log in. My password was not recognised so I hit "Forgot password" having set up a new password using one of my 10 digit authentication codes, I was then asked to log in with my new password, I did this & when trying to do the sync, I am being asked for a six digit authentication code! I have no idea where to find this code. Please help.

https://vimeo.com/

I can sign in on Safari but cannot sign in with Firefox. "Username and password do not match." They match in Safari.

Like most people, the only reason I stick with this browser is for the ability to set it the way I want. Accepted the "upgrade" to 133 and it screwed my settings. Downgrading did not help. So fed up with this [redacted].

I am trying to fix Firefox performance issues. I recently changed to Firefox to escape forced ads on chrome and the lost support for the Ublock origin. But I am having difficulty performing tasks and pages That I used to be able to do on Chrome with no difficulty.

When I open multiple tabs at once the tabs freeze up when trying to load and already opened tabs freeze and anything streaming also freeze. It takes tons of time to load multiple tabs and even sometimes single tabs depending on the website. This never happened with Chrome and I understand Firefox is not as refined as Chrome and is far younger than Chrome is but I feel like it shouldn't be this bad. Is there any settings maybe or maybe settings/preferences in the config area area that might help with faster performance and increased multitasking ability in the Firefox browser?

I have tried

1. Updating Firefox - I am running the most up to date version 2. Updating Graphics Drivers- I am running the most up to date drivers(Updated yesterday 11/17/2024 3. Deleting Cache/History/Logs 4. removed or disables unneeded extensions that I don't use every day and only activate when I need them.

None of this has worked to increase performance.

P.S. I would also like to fix the problem where firefox is using too much RAM if possible.

Can anyone help me Please? And if possible please give as many solutions as you can find or know so I can implement them quickly.

I am trying to fix Firefox performance issues. I recently changed to Firefox to escape forced ads on chrome and the lost support for the Ublock origin. But I am having difficulty performing tasks and pages That I used to be able to do on Chrome with no difficulty.

When I open multiple tabs at once the tabs freeze up when trying to load and already opened tabs freeze and anything streaming also freeze. It takes tons of time to load multiple tabs and even sometimes single tabs depending on the website. This never happened with Chrome and I understand Firefox is not as refined as Chrome and is far younger than Chrome is but I feel like it shouldn't be this bad. Is there any settings maybe or maybe settings/preferences in the config area area that might help with faster performance and increased multitasking ability in the Firefox browser?

I have tried

1. Updating Firefox - I am running the most up to date version 2. Updating Graphics Drivers- I am running the most up to date drivers(Updated yesterday 11/17/2024 3. Deleting Cache/History/Logs 4. removed or disables unneeded extensions that I don't use every day and only activate when I need them.

None of this has worked to increase performance.

P.S. I would also like to fix the problem where firefox is using too much RAM if possible.

Can anyone help me?

'Linked In' technical support are telling me that I am unable to see certain pages on their system most likely because my Firefox Browser (which is fully up to date) is using DNS. They said to remove DNS. Is this wise advice and if so how do I do that and what difference will it make to my day to day use of firefox?

You used to have a nice menu bar, with bookmarks easily available. Now it looks like Edge, with bookmarks over on a right hand menu, with multiple clicks needed. I looked for a View option in settings and found nothing, searching on toolbar also comes up empty.

Is there a way to get that old menu bar to show back up?

I have been having this issue for a while now. I will get this message on different websites, and then if I try again later it might work. It seems like it's a random chance of me getting this error. I have tried "about:config" commands as suggested on other posts on this forum and they didn't work. I checked my licenses, proxy settings and still nothing. I got another web browser to see if it's my PC or Firefox, and the other browser worked just fine. I am guessing there is something I need to do within Firefox, but I am not sure what that is.

I’ve noticed that Firefox is draining my Mac’s battery significantly often consuming over 200% of the device’s power. It also prevents my Mac from going to sleep when not in use. Is there a setting I can adjust to improve battery efficiency and ensure that Firefox doesn’t block my device from entering sleep mode? I’d appreciate any guidance to resolve this issue.

I'm having much difficulty in attaching a article I see to Facebook. Its possible the problem may be I'm not using the right instruction on the Firefox options when I right click the article I want to attach to Facebook. Some of those options are, Save link as, Copy link, when I right click for options. Can someone explain what is the right option to use? And, how do I proceed once I choose the correct option to make that attachment to a Facebook message I'm replying to? There are times a picture of the article will attach to the Facebook message, but the text that is associated with the attachment will not appear? Can someone please help? Thank you.

Hello:

I have a new MacBook Air with the M3 chip. I cannot login to my Costco account on this Mac. I can log in using my old MacBook and my iPhone. I am using the same settings as the ones on my old Mac. What seems to be the problem? Is it the new chip?

Regards,

Moe

I have manually installed multiple older versions of Firefox for Desktop (Windows 10), as I am translating KB articles and sometimes need any of the twenty latest versions to get screenshots in my language for the translated articles.

When an older version becomes superfluous, I would like to uninstall it from my computer, but that does not work. Even though I see all the older Firefox versions listed in Windows Applications & Features and each of them has an Uninstall button (and a helper.exe file in the uninstall folder in the installation folder each of the versions), the only "action" I see is that I get a warning that the Firefox Helper application is about to make change to the content of my hard drive, and will I allow that? The pop-up asking if I want to refresh Firefox instead of uninstalling, it does NOT appear.

The only time I get a proper response, i.e the Refresh-instead-of-uninstall? pop-up, is when I initiate uninstall of the latest current version of Firefox, in my case Fx132.0.2.

Have anyone else come across this problem?

Is it possible to click individual segments of an URL in the address bar to navigate there directly (without manually selecting and deleting the tail)? It's a convenient way to reach upper layers of a website.

For example Vivaldi implements it via Ctrl+<Mouseover/click> (see attached screen capture)

Is there an option or addon to enable this? Thanks in advance

Every time I wake my computer up or start it, I get the attached error about a profile not being compatible. I did switch to the ESR release channel a while back, but I deleted the old profiles; the folder is gone and the profile manager shows only the ESR profile. I have also tried to prevent firefox from starting on startup, but it keeps happening. Does anyone know how to prevent this error from happening, or have any ideas of how to investigate what's going on further?

Hi, I hope someone can help me. Please note I live in UK and I have a Desktop Computer but do not have a mobile phone. I use Firefox browser. This is what happened over 2 days Thurs and Friday. 28-11-24 THURSDAY @1.38pm On Thursday morning I used my computer with Firefox browser, and it worked perfectly OK. Then I had to go out shopping @11-15am. When I came back in doors @1.38PM I turned on my computer, it booted up as normal, then a Blue Screen appeared, with a message from Microsoft re back up in Cloud. I have not actually used Cloud before, although I did try to set it up earlier this year but not completed. So, I thought I would try again. This time I tried to register for the first time on cloud, I entered my email address and country, date of birth and then a password. Maybe something else, can't remember.

Then it asked for a code number that it said it had sent to my email, but I could not get that email then as I was stuck in between booting up and the Desktop screen. ( I DO NOT HAVE A MOBILE PHONE) As I did not have the code number, I clicked on, what may have said “not now” or similar message. Anyway, it would not continue so I had no option than to press the back button arrow, top left corner, several times. I think it took me back to the page with choices. I think I clicked remind me in a few days, which took me to the Desktop.

Normally my computer automatically opens Firefox Browser, but this time, I had to open Firefox, still no problem so far and the rest of Thursday OK. I did not try Microsoft Cloud again on Thursday.

29-11-24 Friday @ about 10.15am I thought that when I booted up, it may go back to where I left it Thursday, but no. When I turned on, there was no sign of the Blue Screen or Microsoft Cloud message re Back Up. When computer reached the Desktop, it did not load Firefox but an ERROR MESSAGE. It said. ERROR: PLATFORM VERSION "133.0" IS NOT COMPATABLE WITH MINVERSION >= 132.0.2 MAXVERSION <= 132.0.2 MAYBE TRY TO REINSTALL FIREFOX

It worked perfectly well before I tried to set up Microsoft Cloud yesterday (Thurs 28-11-24) now I cannot load or use Firefox at all, because it comes up with the same message every time. I have tried turning the computer off and back on, no luck.

My worry about Reinstalling Firefox is that I have hundreds of websites saved in bookmarks folders and I am not sure if I would lose them.

At this moment I have had to endure Microsoft Edge which I don't like. Don't put me through any more pain. Can you please help out a pensioner lost in the modern technological world. Thank you David

I'm an author, publishing through KDP since 2022. As a UK resident, I publish initially on amazon.co.uk, after which Amazon sends the ebooks and print books to amazon.com and so forth. However, when I view the books on the US site, they are shown as 'currently unavailable.' This only happens in Firefox. I also use Chrome now and again, and it's fine there. The books clearly are available, because US readers buy them. But clearly I don't want to risk any US Firefox readers thinking they're unavailable, if they have the same problem that I'm having. I raised this with Amazon a while ago, but they said it was nothing to do with them, and must be an issue with my browser. I've recently published the third book in a series, and it's just the same. Any suggestions?