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?

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 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

I have a local Rocky Linux server running a nginx web server. I am using a Macos laptop. I am trying to install a self signed ssl certificate using openssl on my web server.. The certificate I generated works with Safari but not with Firefox. I have copied the certificate to both Safari and Firefox for local use. Privacy and Security, Manage Certificates, Your Certificates. Firefox complains that that my TLS is tls 1.1, when I am using tls 1.3:

An error occured during connection to tls-v1-1.badssl.com:1011. Peer using unsupported version of security protocol.

My test on my server shows:

sudo curl -v https://caprock.home

Connected to caprock.home (192.168.2.44) port 443 (#0)

• ALPN, offering h2
• ALPN, offering http/1.1
• CAfile: /etc/pki/tls/certs/ca-bundle.crt
• TLSv1.0 (OUT), TLS header, Certificate Status (22):
• TLSv1.3 (OUT), TLS handshake, Client hello (1):
• TLSv1.2 (IN), TLS header, Certificate Status (22):
• TLSv1.3 (IN), TLS handshake, Server hello (2):
• TLSv1.2 (IN), TLS header, Finished (20):
• TLSv1.3 (IN), TLS change cipher, Change cipher spec (1):
• TLSv1.2 (IN), TLS header, Unknown (23):
• TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
• TLSv1.2 (IN), TLS header, Unknown (23):
• TLSv1.3 (IN), TLS handshake, Certificate (11):
• TLSv1.2 (IN), TLS header, Unknown (23):
• TLSv1.3 (IN), TLS handshake, CERT verify (15):
• TLSv1.2 (IN), TLS header, Unknown (23):
• TLSv1.3 (IN), TLS handshake, Finished (20):
• TLSv1.2 (OUT), TLS header, Finished (20):
• TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
• TLSv1.2 (OUT), TLS header, Unknown (23):
• TLSv1.3 (OUT), TLS handshake, Finished (20):
• SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
• ALPN, server accepted to use http/1.1
• Server certificate:
• subject: C=US; ST=Colorado; O=Caprock Development; OU=Caprock Development Home Base; CN=caprock.home; emailAddress=mike@white-home.com
• start date: Aug 12 19:26:04 2025 GMT
• expire date: Nov 13 19:26:04 2032 GMT
• common name: caprock.home (matched)
• issuer: C=US; ST=Colorado; L=Canon City; O=Caprock Development; OU=Caprock Development Home Base; CN=caprock.home; emailAddress=mike@white-home.com
• SSL certificate verify ok.
• TLSv1.2 (OUT), TLS header, Unknown (23):

> GET / HTTP/1.1 > Host: caprock.home > User-Agent: curl/7.76.1 > Accept: */* >

• TLSv1.2 (IN), TLS header, Unknown (23):
• TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
• TLSv1.2 (IN), TLS header, Unknown (23):
• TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
• old SSL session ID is stale, removing
• TLSv1.2 (IN), TLS header, Unknown (23):
• Mark bundle as not supporting multiuse

< HTTP/1.1 200 OK < Server: nginx/1.20.1 < Date: Tue, 28 Apr 2026 13:17:26 GMT < Content-Type: text/html; charset=UTF-8 < Transfer-Encoding: chunked < Connection: keep-alive < X-Powered-By: PHP/8.3.30 <

Caprock.home

• Connection #0 to host caprock.home left intact

Furthermore I can't seem to delete the certificate from Firefox and re add it?

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

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

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

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.

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

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.

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