I-Firefox Community Forum

To be honest. Firefox is starting to be a big pain to use. I'm starting to see more and more of this screen where it say's "Be careful. Something doesn't look right" Even when i go to the advance and say proceed. Nothing happens and i'm getting no where. I know many of the sites don't have anything to do with asking for credit card, Scam or even having popup's. I test the sites in other browsers and there work without any issues. But Firefox is starting to lock me out of many sites due to this. How can i make this stop. As i used Firefox for many years.

The sample that is in the screenshot is a Anime data base that i have also used for years. But today shows this. But was working fine yesteday. What is going on and how can i fix it. So i can start using the browser that i love on the sites i want to.

Be careful. Something doesn’t look right.

Firefox spotted a potentially serious security issue with www.aol.fr. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails. ??????? I used Aol since 1998 !!!!!!!!

When following a link from a news website I keep getting this message - Secure Connection Failed - The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. It loads on my iPhone and other browsers using the same link. What setting do I need to address to get this to stop?

Hello!

For few minutes it says "Performing a TLS handshake to youtube.com", then this message appears:

==

Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

==

What I did so far:

1. Deleted cache and site data for youtube.com. 2. Checked if date and time setting is set to auto and synced it just in case. 3. Tried restarting firefox in safe mode. 4. Tried turning off ocsp stapling. 5. Deleted ALL cache and site data. 6. Tried creating a new profile. 7. Set HTTPS-only mode to "don't enable" and added youtube.com to exceptions

I do use DoH. I can't not use it. YT won't work without it for sure. Provider is google: https://dns.google/dns-query

Everything works fine in Chrome (yes, I use DoH there too).

I am trying to access the FoodsCo website, a division of Kroger and I get a page saying that the "authenticity of the received data could not be verified."I cannot go the page at all (screenshot of what I get when I try to access foodsco.net). I checked the same page on Chrome and the page shows up fine and the connection is secure (the website literally has https in it. The S stands for secure). I have tried to add foodsco.net to the exempt list through Enhanced Tracking Protection, but it didn't work. This isn't some dark web site, it's connected to the biggest grocery chain the U.S. I'm very confused here. What is happening?

itu adalah contoh dari web yang saya mau buka ternyata error. Ngga hanya sekali, beberapa website pemerintah lokal yang mau saya buka terkadang memperingati bahwa websitenya tidak aman (Not Secured).

Apa karna Laptopnya bukan produk lokal? laptop saya ini dari Singapure dan pengaturan awalnya tidak bisa diganti, jadi tidak bisa dibuka website2 lokalnya? karna mendeteksi dan kebacanya IP laptop saya asing?

I am trying to connect to a web page but keep getting the following message:-

An error occurred during a connection to WWW.castlewater.co.uk. Peer's certificate has been revoked.

I CAN connect via the Edge browser?

Do I need to change a setting?

Regards

I have an website which I prior to this error message have visited many times on Firefox and had no problems. Recently though around two days ago I noticed that I couldn't get in and was met with the following message "Warning: Potential Security Risk Ahead". I can't bypass it apparently and I really need to be able to access this site as it's a University site.

I can access the site on other browsers such as Chrome and Edge but I use Firefox as my default browser and I'd like to keep it that way. I'd appreciate any help I can get.

Said link: https://canvas.gu.se/

I just installed Firefox on my PC haven't had it on this computer since reinstalling windows - I imported my bookmarks and passwords from Edge, thinking it would be a seamless transition, since I used Firefox in the past without much trouble.

Two weeks on, about 95% of every page I open gives an error similar to the one below, and I have to shift+refresh several times to get it to reload before it goes away, (some sites still don't open).

I wonder how common this issue is, and how people fixed it?

Be careful. Something doesn't look right.

Firefox spotted a potentially serious security issue with connect.mozilla.org. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails.

Go back (Recommended)

Hide advanced

Advanced What makes the site look dangerous? The site is set up to allow only secure connections, but there's a problem with the site's certificate. It's possible that a bad actor is trying to impersonate the site. Sites use certificates issued by a certificate authority to prove they're really who they say they are. Firefox doesn't trust this site because its certificate isn't valid for connect.mozilla.org. The certificate is only valid for: *. eero.com. What can you do about it? Probably nothing, since it's likely there's a problem with the site itself. Sites use certificates issued by a certificate authority to prove they're really who they say they are. But if you're on a corporate network, your support team may have more info. If you're using antivirus software, try searching for potential conflicts or known issues. View the site's certificate Learn more about secure connection failures Error Code: SSL_ERROR_BAD_CERT_DOMAIN Jun 5, 2026 10:58:34 AM GMT+10

Proceed to connect.mozilla.org (Risky)

Secure Connection Failed

An error occurred during a connection to identity.att.com. SSL_ERROR_HANDSHAKE_FAILED

Error code: SSL_ERROR_HANDSHAKE_FAILED

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Secure Connection Failed

An error occurred during a connection to ibas.finance.gov.bd. SSL peer was not expecting a handshake message it received.

Error code: SSL_ERROR_HANDSHAKE_UNEXPECTED_ALERT

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more…

Secure Connection Failed This happens only on FIREFOX. NOT any other browsers that I have. I contacted the tech group on the site that I receive this message for the last 3 or four months. They checked everything on their end...it is a browser issue!

hey so i spent weeks on surveys , nearly done , survey mart was working well day half of the day until after one survey i received a message saying 'Your connection is not private' Attackers might be trying to steal info, i earsed history and password and logged back in but site opens but cannot continue with surveys , what may be the problem? Is it your site in general and are you guys working on it or can you see to it right now as i would like to continue and know that i did not just waste days away on this, PLEASE HELP!!!

What can you do about it?

inbox.lv has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.