Diễn đàn hỗ trợ Firefox

Hello my number 1 browser community. I have a problem with fire fox starting super slow. I use firefox nightly(i love it!) but i tried all the stuff in the solutions area for fixing slow start up but none of them help. I always use only 2 add ons and they are the same add ons i have been using for years. i have had this problem for like almost 2 years and i dont know what to do. i tried re-installing, refreshing, clearing cache, safe mode but nothing fixes it. The 2 add ons i use is ublock origin and https everywhere, please help me guys cause sometimes it takes up to even 4 mins for firefox to start.

Using Firefox on one system, it pops up the "dangerous and deceptive content" message on sites that are fine, like mine and a friend's, but on my other system, no warnings for the same sites. It doesn't do it for google.com or msn.com, and no one else gets the warning for the sames sites I am.

Other than turning off the security setting, is there a way to fix this problem? It wants to block me on many sites I've been going to for years.

Hello,I have Windows XP 32 bit with service pack 3 and Firefox 52.9.1 ESR browser. Now that adobe flash player is history I can't play videos online that are not on youtube. I can still watch youtube videos.

Is there a HTML5 video player or something else I can install on this old system that will work or is that not possible? I know it's an old system but it still does the job.

Thanks.

I get the SEC_ERROR_UNKNOWN_ISSUER on some websites like google and youtube. I can't go past it and it is super anoying. I tried setting the security.enterprise to true but that makes my browser super slow so that is not an option. How can I get rid of this?

I have been able to access my sbcglobal.net email up until to day.

• Today, I got to https://currently.att.yahoo.com/ as usual.
• I select "sign in"
• I select my account
• The account tries to load until I get this message:

   An error occurred while processing your request.
   Reference #97.4f397c68.1616602006.71f9255 

• I have tried adjusting protections to no avail
• I can sign in using another browser, but NEVER with FireFox.

Any suggestions? Otherwise, I think that I may need to dump FireFox.  :-(

I am receiving too often the message "A Page is Slowing Down Your Browser, What Would You Like To Do?" It becomes annoying. I tried the same site with Edge and it responded faster. What can I do other than switch browsers?

With Win 10, if I press the right button on the Firefox symbol in the toolbar, a new Firefox appears followed by a 2 in brackets and the number in brackets cannot be deleted. Selecting it with the left button a new session opens which works perfectly. Greetings to all and thanks for the possible solution. Daniele

I've been using Spanish (Mexico) dictionary for a few years as my default spell checking dictionary. However, it lacks a lot of common words and local idioms that I use everyday.

How can I create a new dictionary for Spanish (Colombia), or contribute to the Mexican one? I can't find a Github repo with the project.

While adding a bookmark, I accidentally hit the 'do not show Editor' button and now I cannot tell Firefox where to save my bookmarks - they are all being directed to one folder. Where do I find the settings to turn it back on?

A couple of days ago I tried to login in to my account at dpreview.com, and got a '400 Bad Request Error' that pretty much locked up my Win10 system. No problem logging in to other websites using FF, and I was able to log into the dpreview.com website using Chrome, with no problem. I just updated FF this morning with the latest release, hoping that might fix the problem, but unfortunately, same error message.

On a different computer, also running Win10, I was able to log into that website with no problem, so it looks like it is only on this computer, using FF to log in to that website, that the problem occurs. All other links at that website work fine.

Any thoughts/suggestions?

Earlier, when I you wanted to go to a specific folder in the Bookmarks in the Sidebar, you just typed the first letter of the folder. Now, when you do the same, Firefox will type the letter to the search box! Can this be changed?

After installing Firefox Version 87.0 today, I haven't been able to open the application. Each time I try I get the following error message, "Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item." I have tried both running the installer again to fix it and downloading a new copy of the installer and running it, neither of which solved the issue.

I found a previous thread from 2018 detailing the same issue (wherein the chosen solution was to make sure that your firewall wasn't blocking firefox's access to the internet) however;

A) I can't even start the firefox application, let alone see if it can access the internet. B) I tried making my antivirus application ignore it (Malwarebytes), but when I tried to do so it said I didn't have permissions to access the file.

To be clear mine is the ONLY account on the computer, and is the admin account as a result. My pc is running on Windows 7 64 bit in case that is relevant (though I didn't see anything in the update notes to suggest that they're ending support for Windows 7 just yet).

The issue's been going on since yesterday, the app will freeze up like it's about to crash, but then it'll just pop back up. It does it repeatedly and nothing I've done has fixed it, from restarting my computer to closing the browser. Its only gotten worse and I haven't been able to find any relevant information on how to fix this.

Hello, How do I permit Calibre to use IndexedDB storage in Firefox? I am running Firefox 87.0 on Windows 10. Both are fully updated as of the time of this writing (26 March 2021). In Calibre 5.13.0, I enable "Sharing over the net," then I "Start server," and then I "Test server." Calibre opens a tab in Firefox but returns the following error message: "Error: Could not initialize database You must allow calibre to use IndexedDB storage in your browser to read books" I cannot figure out how to enable IndexedDB storage for Firefox. Thank you in advance for your help, Eric