Diễn đàn hỗ trợ Firefox

I recently performed a system reset and upon re downloading Firefox I can't seem to find any of my 50+ tabs that I had open previously, all of them I need for one reason or another, history is empty, can anyone please help explain how to get them back in simple steps?

Every time I open Firefox, it asks to update. This started two or three days ago, and it's getting annoying. Am I the only one this is happening to? Do I need to remove it and start over?

They just be stored somewhere, right? I looked in the profile files but of course there is nothing for dictionary there. That would be logical! So where is this little file? I sure don't want to go through adding hundreds of words again for my next install on another machine. And why is the Firefox dictionary so lacking in words? You'd think they'd just copy words over from any existing dictionary. It would be far better than it's present deficient state. All the time I have to add words it doesn't know.

Dear ladies, dear gentlemen,

on another Computer, when using Firefox, I am now constantly getting a Norton notification of a malicious domain request 22. The problem does NOT arise with the Opera browser installed on the same machine. What shall I do? Uninstall Firefox seems to be the best solution. Scans do not reveal presence of malware. On this computer, similar OP, this does not happen, but I use it much less.

Thanks a lot, Alexander

I have been having with YouTube for a couple of days. It asks to turn off ad blockers. I have done so and it still requests to turn ad blockers and still won't allow viewing. YouTube works on other browsers.

I am sure YouTube is playing games but can you help?

We write an SDK that needs to detect what subdomain a site is running on. For example to detect that app.foo.example.com.au and web.foo.example.com.au share example.com.au

In order to do that we check if we can set a cookie on `.au` that fails. Then `.com.au` also fails, then `example.com.au` and that succeeds

This is safe and fast and leaks no information not already available to any JS running in the page.

In most browsers this is fine. In Firefox it is also fine _except_ it logs a warning to the console that a cookie was rejected. This then causes users to open a support ticket with us in order to find out about "the error"

Is it possible for us to suppress this log?

Embedded links in Outlook email on Windows 10 will not open automatically when the new email is first opened to be read if Firefox has been selected as the default Browser. This is a new issue !

The message is" if there are problems with how this message is displayed, click HERE to view it in a web browser " and then the Browser used is only Edge!

Restoring disliked Edge to be the default browser corrects the issue but Edge is a known tracking device.

Hello to everybody, My question: Opening local .mdb files (MS Access database) does no longer work in Firefox 120, but was ok in previous releases. The only choice is to save the file rather than onening it with MS access. Under Firefox settings/applications the file type .mdb does not appear. If I answer the question "What should Firefox do with other files?" with "Ask whether to open or save files" it has no effect at all. I expect to find an entry for .mdb files where to choose "always ask" as was the case earlier. Please help!

Regards Volker Zipp

Still image quality good but videos are over-saturated in colour. Same videos in Chrome videos are not over-saturated. Many people have this issue but no solution in search results.

In the last few months, when clicking on the file icon to download a PDF, the "save as" dialog box does not show up fully and I have to view all windows then click on any open window for the dialog box to appear.

I am on a Mac desktop, running MacOS Monterey 12.6.5 I just updated Firefox, to 120.0.1

I attached an image of what the screen looks like after I click the file icon (top right) to download a PDF. It only shows the "Format" part of the "save as" dialog box until I zoom out to view all the windows then have to click on any open window, then the full dialog box will allow me to choose a location to save and rename.

Any help if this a Firefox issue or a Mac issue?

I have installed Mozilla Firefox 120.0.1 on Ubuntu 22.0.4 server as a root user and can launch but when I login into another user the browser gives me the error message "Your Firefox profile cannot be loaded. It may be missing or inaccessible"

Please help me how enable Firefox browser for all Linux users

I have been accessing my Virgin media account for years from the Firefox browser. I like to access my email from Firefox. But now it won't work. However I can get into Virgin media straightforwardly from Microsoft Edge. I've tried clearing the cache (though I don't know if I did correctly) but it's made no difference to the Virgin problem.

I know this is likely to be a wont-fix resolution, but I'd like to confirm that.

So if a webserver has the extremely cautious content-security header:

content-security-policy default-src 'none';

Firefox will correctly not embed video from that same domain in web pages hosted by that domain.

Fine. Good. Totally right.

When the server sets the same flag on the media file itself, Firefox's media player won't play it in browser. Even if I directly open the URL as a user, signaling my user intent to accept the risks for the file, the default player Firefox creates uses the media file's content-security-policy FOR itself.

This means the media won't load, gives an unhelpful and incorrect error message about MIME types, and the only way to view it is to actively download it and view it in local media applications.

Now, given the risks of allowing exceptions in CSP, I will understand if the development team doesn't feel this is a safe change to make, and it's on website owners to prevent this, but I don't feel it's in keeping with the intent of CSP to prevent this case.

whenever I am on Amazon.com the search window constantly fills with "solo con tu pareja," a movie I once watched. When searching for an item and even when trying to buy something the search window constantly fills with this phrase. This only happens using Firefox browser I've tried clearing cache, re-setting, etc. and while I got it to stop once, as soon as I re-started computer the problem came back.