Diễn đàn hỗ trợ Firefox

How do I check to see if I have Mozilla VPN? If I don't have it, then how do I get it? I am computer illiterate, and I am also slow and forgetful due to my age (almost 77). I also have short-term memory loss, so I will need detailed, specific, and step-by-step instructions with almost everything dealing with computers. Your help will be greatly appreciated. Thank you.

Tim Applegarth [email address] [phone number]

Hi, I want a website (Protonmail, my email client) to store persistent data. I have enabled it, but I also have all my browser security settings on Strict (also clearing browse data and cookies on each closing of the browser), so now when I have downloaded the data and I close and reopen my browser: it's all gone. I tried looking at making Protonmail an Exception, but that's only possible in relation to Tracking Protection. How to fix this?

Thank you in advance,

Kind regards,

Hi!

I am seeing the message in the subject line having completely removed all trace of snapd and installed Firefox deb under Ubuntu 24.04 using the ppa https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu

about:support says "User Namespaces false — This feature is not allowed by your system. This can restrict security features of Firefox"

The page shown following the link does not help as it just assumes I have installed from a tarball - not the case.

Any idea whats going on?

I am using the plasma DE having installed kde-plasma-desktop if that's of any consequence.

Thanks for looking

don't use my data for selling to cookies or perform illegal and unethical hacking.i am trusting your web

server.data safety 

thank you

I am currently a victim of grave identity theft over several platforms which prevent me from smooth and segure sign ins, confirmations, password changes , etc. Safari is gravely affected, as a mother browsers. My last resort will be to stick to Firefox/ Mozilla gladly. Any advice to further my viver security? Thankfully…Sergio

Dear Mozilla,

How do I change the content that is sent to my home landing page when I launch Firefox. 98% of the content is from fake news sources that are wildly inaccurate and just plain not true. This includes sources such as Vox, The AP, Reuters, The Guardian, Business Insider, etc. It seems all Mozilla news feed sources literally are the fake news media which remove trust from your organization, and NOT something Mozilla should be promoting. By pushing those stories and content from fake news sources, it literally makes me not trust Mozilla's intent or objectives.

Hello

What are the restricted sites in the Firefox extension details? What are the sites restricted by Mozilla, as referred to on the page https://support.mozilla.org/pl/kb/dlaczego-niektore-dodatki-nie-sa-dozwolne-na-stronach-ograniczonych-przez-mozille?as=u&utm_source=inproduct#firefox:win10:fx135 ?

I am looking to turn on review checker and cannot see how to do it. I don't have the price tag icon displayed nor do I have any reference to Review Checker in my settings. I'm wondering if my version of Firefox supports it (133.0). Any ideas?

how to protect my user name and password to avoid hacker accesibilty because every time he calling to offering products by email, i need support to protect about it.

I have a HUGE problem with Firefox memory usage. Some open instances of firefox are taking anywhere from 600mb to 2.8gb of memory. Since firefox opens MANY instances even with only ONE active window, this very quickly uses all available memory (4gb) causing a full laptop crash.

More concerning is that CLOSING the worst instance of memory usage STILL leaves the single open page/tab open, so what exactly was the memory eating instance actually doing ???

I have included a screengrab of the many remaining instances of firefox in windows task manager AFTER closing the main culprit.

I have also included a screengrab of all the adblockers I use which I believed would limit unnecessary memory usage, but does not seem to be effective.

Many Thanks

Please read below my emails to Ghostery support that describes the issue and the Ghostery response.

The issue is using DuckDuckGo in Firefox with the Ghostery add-on enabled, and changing DuckDuckGo AI settings.

Please let me know if there is a resolution available.

Thanks, Malc [edited] @gmail.com __________________________________________________________________________________________

Malc May 1, 2025, 7:39 AM GMT+2

An FYI -

Ghostery Tracker & Ad Blocker - Privacy AdBlock 10.4.32 has an issue in Firefox with DuckDuckGo search engine Settings changes to AI Features, Chat to off, Assist to Never, then saved and shown working with a page refresh.

When Firefox is then shutdown and restarted the intended DuckDuckGo browser changes are not applied. Assist will still show a result in a search.

Proven by disabling Ghostery, again changing DuckDuckGo AI features and saving, shutting down Firefox and restarting, then searching with DuckDuckGo with no Assist displayed in result.

I can answer any questions you may have.

Regards, Long time happy Ghostery user Malc [edited] @gmail.com

__________________________________________________________________________________________

Ghostery Support 2 (Ghostery) May 1, 2025, 10:30 AM GMT+2

Hi there,

Thanks for reaching out to Ghostery and bringing this to our attention!

We were able to reproduce the issue on our end, though with slightly different conditions. It appears that DuckDuckGo’s settings are stored locally in the browser. If Firefox is set to clear cookies and site data (either manually or automatically), this would reset DuckDuckGo’s preferences each time — even with Ghostery disabled.

Could you please check if the option “Delete cookies and site data when Firefox is closed” is turned off in your Firefox settings and try again? In our tests, DuckDuckGo’s settings were preserved when this option was disabled. It would greatly help to narrow this down.

Here for any further questions! Best, Ghostery Support

__________________________________________________________________________________________

Malc May 1, 2025, 8:20 PM GMT+2

Hi Ghostery Support 2,

Thank you for replying.

Yes, the option “Delete cookies and site data when Firefox is closed” is turned on. When turned off and the Ghostery extension enabled, the changes to DuckDuckGo were saved and implemented correctly when Firefox was restarted.

I did find this.

In Firefox settings Cookies and Site Data, Manage Exceptions, I added "https://duckduckgo.com" and set Status to Allow. I also turned on “Delete cookies and site data when Firefox is closed”.

With the Ghostery extension enabled, the saved settings to DuckDuckGo were still active when Firefox was restarted.

But I do not think it wise to give DuckDuckGo an exception to use cookies and site data with no restriction.

Please keep me informed.

Regards, Malc [edited] @gmail.com

________________________________________________________________________________

Ghostery Support 2 (Ghostery) May 2, 2025, 10:23 AM GMT+2

Hi there, Thanks for getting back to us!

Unfortunately, there’s not much Ghostery can do in this case. If DuckDuckGo saves its settings internally, there may be no way to keep duckduckgo.com out of exceptions while preserving those settings elsewhere.

You might want to look into third-party tools that support this kind of setup, or consider reaching out to Mozilla’s support team with this request.

Here for any further questions! Best, Ghostery Support Support Ghostery

Hello, a locally hosted application has a web interface which tries to send a data (POST request) to a remote resource (which is under my control) yet the web browser (Firefox ESR 128.9.0esr) blocks this resource request saying in a developer console (F12) this:

• NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_SECURITY, MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT)

• Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://myRemoteServerIP/request.php. (Reason: CORS request did not succeed). Status code: (null).

I suspect that the CORS blocking is a result of the first (SSL) error, AI also told me that I can configure my remote server/resource (e.g., using Apache, Nginx, or PHP) to include the necessary CORS headers in its responses and indeed the remote server of mine has such lines inside a PHP script that is receiving the request: header('Access-Control-Allow-Origin: *'); header('Access-Control-Allow-Methods: POST'); header('Access-Control-Allow-Headers: *');

The remote resource (server) is using self-signed SSL certificate and it is referenced using IP instead of a domain name.

When I try to do the same request via Private browsing window (without extensions), there is no NS_ERROR about self-signed cert. but only CORS one. When I try browser Librewolf 137.0.2-1 (my FF version is older: 128.9.0), the request is NOT blocked, is OK..

My main aim is not to avoid blocking in my browser, but in all main browsers for everyone.

Is it so that this kind of blocking is default behavior in browsers? Is there please any way to avoid that, beside getting a domain name and CA signed SSL certificate?

I keep getting pop-ups in the right lower corner from "mozilla firefox" (not sure if they are legit). They will say: "zeus.2020 trojan detected" or "virus detected" or "system is infected", etc. All have "Mozilla Firefox" in the upper left of the pop-up, and "via rgfirewall.xyz" at the bottom. Is this truly legit, or is it just a nuisance? I've just been closing them with the x or dismiss buttons.