I-Firefox Community Forum

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?

Hi, I try to use Firefox for my job and faced with the problem that I can't open state owned website due to sertificate signature error. I ready to take a risk but I can't find the button "Proceed.. (Risky)". This button simply not showing. In th same time in mobile version I saw this button, could take permssions myself and open the website. I tryed to add root and sub sertificates of the Goverment, tryed to add the site address to exclusions -- all these steps don't work. I can't open the site and can't find button "Proceed.. (Risky)". Moreover, in the same time, I can open this website without any questions and problems with Safari and Chrome.

I use the last Firefox version (153.0) from Firefox official website.

How can I resolve this problem in Firefox? Please help me

In the last few months, FireFox (accesed from Roamnia, on Firefox an a MacOS 26, both always updated to the latest available final version) has been showing the error: “Be careful. Something doesn’t look right. Firefox spotted a potentially serious security issue with e360.yale.edu. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails. Advanced What makes the site look dangerous? 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 it looks like the certificate expired on 14/08/2026. What can you do about it? Your device’s clock is set to 22/09/2026. If this is correct, the security issue is probably with the site itself. If it’s wrong, you can change it in your device’s system settings. View the site’s certificate Learn more about troubleshooting time-related errors Error Code: SEC_ERROR_EXPIRED_CERTIFICATE 22 Sept 2026 08:34:11 EEST“ On perfectly innocent sites. Two examples: FAIR.org does not load beyond the initial “Home” page; e360.yale.edu/ shows the warning instead of accessing the homepage. This is annying, possibly wrong and, as any false security warning, potentially dangerous. Please help.

please provide directions for fixing the navigating inside NEwsmax site

Secure Connection Failed

The connection to www.newsmax.com was interrupted while the page was loading.

   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.

Since we had service to our router and modem, I have been receiving a notice "Secure Connection Failed" whenever I click on a link. It states that something is too long. What can I do to resolve this situation as some of the links are important. I would appreciate your help. Thanks!

Hi Love Firefox and use it every day to manage clients Google Ads accounts. Updated to latest version and now I'm getting this warning when I'm trying to access ads.google.com Doesn't appear that I can add an exception, is there a work around that I can use. Look forward to hearing back. Thanks in advance

Paul

Secure Connection Failed

The connection to www.newsmax.com was interrupted while the page was loading.

   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…

How do i fix this

I went into firefox security in preferences and deleted some of my certificates and now I can't log into or get on almost all of my old websites...is there a way to restore my original settings???? Thanks

This is the message that pops up when I am in my yahoo.com email account. Does his have anything to do with Firefox? How do I get rid of it, looks suspicious.

Rich Randall

Secure Connection Failed

An error occurred during a connection to fen.peryuck.com. SSL received a record that exceeded the maximum permissible length.

I am subscribint to TheHybridLayer.com and the video requires access to player.vimeo.com. Unfortunately, the pop up message is saying that "Did Not Connect: Potential Security Issue." Please help me address the issue since I overwhelmed with this.

Current situation : I am using Macbook Air 11" 2015, MacOS Catalina, Firefox 145

Firefox detected an issue and did not continue to xjobs.brassring.com. The website is either misconfigured or your computer clock is set to the wrong time.

It’s likely the website’s certificate is expired, which prevents Firefox from connecting securely. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

I want to apply for job from disney careers

Firefox spotted a potentially serious security issue with westdell.fortiddns.com:40443. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails. Advanced I can't open a lot of sites, I can click on advanced and select to open the site at risk but will not open. I can open these site in Google Chrome or Safari no problem. i follow the article "How to disable the Enterprise Roots preference" and turned both to "False" and still not luck Thanks

When I enter a company name into search this message appears:

Secure Connection Failed

An error occurred during a connection to vanilla-search.com. SSL received a record that exceeded the maximum permissible length.

Error code: SSL_ERROR_RX_RECORD_TOO_LONG

   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…

Firefox is saying that there is a problem with my Xfinity internet & advises me not to log in. This happens only on my mac. Firefox seems to work fine on my i pad & i phone. Safari does not show this warning & they are very strict about internet issues. how do I fix this problem?