Diễn đàn hỗ trợ Firefox

In Firefox version 66.0.4 when I download a .jnlp-file it provides the option to either save the file or open it in Java Web Start. Now that I updated to Firefox version 67.0 I can only save the file. The option to directly open the file using Java Web Start is not available anymore.

Suddenly Firefox is now blocking MS Teams, all the other Office365 apps are OK including SharePoint, OneNote and OneDrive but Teams is blocked - why and can I fix it?

My wifi plan is of 50 Mbps. When checked on Firefox via Ookla speedtest it shows only 9 to 10 Mbps. It has been showing this since the past week, before that it was accurate to 50 Mbps. Also when checked on Ookla Speedtest app on Windows, the speed is accurate (50 Mbps). I was trying to attach screenshots but it is stuck on 'Loading'.

Hi. I need to open the jnlp file but each time it shows me the message "Open executable files? ..." How can I disable this message and open the executable file? Thank you! Thanks!

I've tried most of the Netflix (website's) suggestions to troubleshoot why videos won't play with Firefox; none could fixed the issue. The only suggestion I did not try is to disable Private browsing mode simply because I don't know how to do it and Firefox Support does not specifically address this task. I've also tried the suggestions provided by various forum responders to this issue ... again, no fix! Can someone please provide specific instructions on how to disable Private browsing?

I'm tired of switching from FF to IE every time I want to watch a movie.

I know this has probably been asked before, but none of the solutions really work for me. Playing Youtube or other video on sites like Vimeo result in choppy playback. I have ruled out hardware problems, because playing local video works fine. This issue also occurs on Chrome, and turning on or off hardware acceleration does nothing.

Thanks for any help in advance.

I recently copied my Old Firefox profile to another folder and refreshed my Firefox Dev Edition browser. After refreshing, I copied all of the content of my old Firefox profile to the new default profile and then started the browser. Upon starting it, the browser was working with all of my previous add-ons. But whenever I close the browser and open it again, the icons of the add-ons at the overflow menu are not showing though there is space for the add-ons. Whenever I click at the add-ons, the error that 'Access to file was denied' - `The file at moz-extension://b408b31d-945f-43cb-881e-b1f4071942b6/index.html is not readable` shows up. I tried it with creating other profile folders and then copying my old profile data but it still always happens.

Any help?

Look, this is a huge problem because this message isn't just showing up on my Fire Fox browser, it's also on my TOR browser. I'm not seeking to fix TOR here, I'm just saying that it's on there too and TOR uses Fire Fox - this message appears nowhere else on my PC or browsers. My system was just purchased brand new in Feb. This message did not display when I dl either browser. I've NEVER downloaded ANY Avast or anything like it, I use Windows Defender and that's it. I'm not a techie - but I'm like really neurotic over hard drive space - I don't download ANYTHING unless I absolutely HAVE to with the exception of browsers. I only download those from their official websites though. I do play some games, I've only downloaded games from Steam, Origin, and Utomik. I do have all of their clients on my PC. Other than that, there's been NOTHING I've dl. I only included that info because I thought it might help. Can someone PLEASE help with this. I tried to look at the registry, I'm not seeing anything that seems amiss but I need more specifics - I've read the other questions and answers on this - but I don't know HOW to change anything to see if it helps. I already am scared to death to touch the registry.

I have a couple of websites that keep popping up from time to time unexpectedly. There must be a way to simply add websites names e.g. www.ihatetheseguys.net to someplace on my Firefox browser, something like a BANNED LIST. And once added that website can never open on my browser again.

This seems like it should be a very simple to thing to do.... it would be like the exceptions list we can access in options where we add websites to a list and they are allowed to open, but this would be the opposite.

I have searched around and it seems there are some add-ons/apps/programs I can download and run on my computer, one called BLOCKSITE. But I dont want to download anything. This seems like it should be a very simple to thing to do on the option page. Simply add a BANNED LIST where we can type in websites and when they try to nope they get noped away to oblivion.

So when I try to visit archive.org or its wayback machine, I get "Secure Connection Failed" Two widgets are offered: a tickbox for reporting issues and a [Try Again] button. Your Help says to click on the [Advanced] button but there isn't one.

Before anybody gives me a lesson in online security, I would ask that you focus on your usability issue and not my personal habits, thanks.

In options I have homepage and new windows set to custom urls. The new tab option doesn't have an option for custom url but I'm opening a new window so it shouldn't follow the new tab setting. I never open tabs, just windows.

Why does every update have to cause a problem with my settings? I leave updates as long as I possibly can as they always cause a problem.

I am used to having 30+ tabs open in Firefox. When I close and then reopen Firefox, they're all there.

Until yesterday. Now only a half-dozen or so appear. I THINK they're the first half-dozen from my previous session.

Also, I can't find a way to restore the previous session. That option is not in my Menu. My History has lots of previously used tabs, but I can't find the ones I want ... especially the ones I haven't actually used for some time.

I recently bought a new PC which forced me to "upgrade" from Windows 7 to Windows 10. I don't think that's the problem, though. Firefox installed fine and worked fine on the new computer until I powered down a couple of days ago -- then powered back up and restarted Firefox....

I'm not aware of having upgraded to a new Firefox, unless that happened automatically.

I saw a Q&A from Martha that seemed relevant. But she uses a Mac, and I'm on a PC. Also, I didn't understand and couldn't begin to follow the recommendations she was given. I'm a 75-year-old IT ignoramus. I really need very simple step-by-step instructions ... or somebody to take over my computer and solve the problem for me ... or I guess I could wait till one of my grandchildren knows how to help....

In a nutshell, I have two problems: 1. Firefox is no longer restoring all my tabs when I reopen it. 2. I can't find "Restore previous session" to restore my tabs manually.

Thanks!

--Peter

I want to change the "+" color on the new tab icon

I was able to do this for the close tab "X' icon with the following css code in my userChrome.css file.

.tabbrowser-tab .close-icon:hover {

  fill: white !important;
  background-color: red !important;
  border-radius: 4px;
}

I think this code should work for the new tab icon, however I don't know the name of the new tab icon.

Please help,

Thank you

When I upgraded to the most recent version of Firefox, I lost all of my tabs. The directions on upgrade indicated that I would not lose any tab information. However, on startup of the new version, I seem to only have the option to restore from sync which I never did. I do not believe that I was instructed to do this prior to closing. I maintain 2 active open profiles, home and office, and I do not want these to be synced. I had them both set up to automatically restore the last session which was working well. I am no longer able to restore from an old session. I think this is because this is an entirely new version of Firefox and the local settings were not saved. Now I want to either recover the old tab data and apply to the new installation or restore the previous version of Firefox which might have my previous tab data. Please help.

Hi,

I use Firefox on a Windows 10/Ubuntu 18.04 dual boot system and share the profile of the Windows partition to use the same Firefox information with both installations. After upgrading the Firefox Win10 version to 67.0, I get the error message uploaded as a picture. The Ubuntu Firefox version is also 67.0, so there is no older version that modifies the profile information.

I found this thread https://support.mozilla.org/en-US/questions/1259820 describing a similar question, and the chosen solution to delete the compatibility.ini from the profile folder revived the profile. However, this is not a permanent solution. Using Ubuntu Firefox after Windows Firefox is unproblematic, whereas the error reappears in Windows Firefox after using Ubuntu Firefox. I have to delete now the compatibility.ini every time I use Windows Firefox after Ubuntu Firefox, which is rather annoying. Obviously, the Ubuntu and the Windows version of Firefox 67 interpret this .ini file differently. Is there anything planned to synchronize both versions of Firefox 67 better? Or any other solution that solves this problem permanently? And no - I don't want to store my profile information on an external Sync server. Thank you for your time reading this. Any help is much appreciated.

Google won't let me sign in and here is what they say: "The browser you're using doesn't support JavaScript, or has JavaScript turned off.

To keep your Google Account secure, try signing in on a browser that has JavaScript turned on."

I have recently updated to the latest version of Firefox and seemed to have no problem yesterday. What do I do now?