Firefox Community Forum

I used to be able to connect with Firefox (with a warning message from you) to my local Netgear NAS, but now it just says:

Secure Connection Failed An error occurred during a connection to 192.168.1.100. Peer using unsupported version of security protocol. Error code: SSL_ERROR_UNSUPPORTED_VERSION The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the web site owners to inform them of this problem. This web site might not support the TLS 1.2 protocol, which is the minimum version supported by Firefox.

How can I still override this with Firefox. It's really important I can connect to my NAS.

With thanks,

Nick Curley

when I try to open a particular website, firefox keeps blocking it and says its an error. I cannot open this website. how do i get passed this.

Secure Connection Failed

An error occurred during a connection to www.cowdenbeathrotary.org. Peer reports it experienced an internal error.

Error code: SSL_ERROR_INTERNAL_ERROR_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…

I have been having problems getting access to sites. I keep getting 502 Bad Gateway Certificate verify failed: unable to get local issuer certificate. What can I do? For example, I have been trying to access EFTPS to schedule payments or IRS and get same message. What should I do?

I noticed Firefox sometimes gives extra warnings when using payment gateways on healthcare service websites. Is Firefox stricter with SSL certificates than other browsers? For instance, visit here visit here

and test the checkout security prompts.

Whenever I try to open Github specifically I get:

Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for github.com. The certificate is only valid for the following names: cloudflare-dns.com, *.cloudflare-dns.com, one.one.one.one

Error code: SSL_ERROR_BAD_CERT_DOMAIN

I spent time looking into this, used a new IP address and tried updating the certificate for github, however I'm not particularly skilled when it comes to this, so any assistance would be much appreciated.

https://portal.esfarayen.ac.ir/gateway/PuyaAuthenticate.php?rand=598744032

Peer’s Certificate issuer is not recognized.

HTTP Strict Transport Security: false HTTP Public Key Pinning: false

Certificate chain:

MIIDkDCCAnigAwIBAgIQR4UpxQa6hUL8TWMm/HAswjANBgkqhkiG9w0BAQsFADBH MUUwQwYDVQQDDDxUaGUgb3JpZ2luYWwgY2VydGlmaWNhdGUgcHJvdmlkZWQgYnkg dGhlIHNlcnZlciBpcyB1bnRydXN0ZWQwHhcNMjUwOTIyMDgwNjQ4WhcNMjYwOTIy MDgwNjQ3WjAcMRowGAYDVQQDDBEqLmVzZmFyYXllbi5hYy5pcjCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBAKWy1jc1UCco6zQ/wEfwas6CbYwyzm7iAeR2 YOm+xZZ2qaMy8FZaP2TFXn1JYC6X9dCmqJBUtWmOs65Q+80QK/tI4FdvYpvp/Krb b4tcunl2pCzS1GUbMPYMPDSzP48DiyhT15aBOZ5eULoeS5U/4yZnK+ewcBfeBa9I KcW+ykvdSHeI8UosVyKkVZPsO+92DbXZxyo03fW5jCdRwaQQBLWVKukxWVFulQjA ccLsqwuyqUTHmw3U4r9xFoSeNj4IYzvizJk3QRqmgfNnODXusldVXm6G8o6lpgLR 0XG584eIKao1A5/b1cBdAqVE//10ELz47In0tcosNWBW2fja70ECAwEAAaOBojCB nzALBgNVHQ8EBAMCBaAwHQYDVR0OBBYEFICNRDKWyMTx9MFDRDcnLJ5FPw7eMB8G A1UdIwQYMBaAFICNRDKWyMTx9MFDRDcnLJ5FPw7eMAwGA1UdEwEB/wQCMAAwEwYD VR0lBAwwCgYIKwYBBQUHAwEwLQYDVR0RBCYwJIIRKi5lc2ZhcmF5ZW4uYWMuaXKC D2VzZmFyYXllbi5hYy5pcjANBgkqhkiG9w0BAQsFAAOCAQEANJrMGEWE2vh2TdYb 4VPL9ctYa+cckOfOIRf3Ojg8UJdLKCiXVRVxqvak1z11OebYMqSro9E09ZTQK/gB o9seuRDqPp8VhvKFU2erFHzteHBVm8MbbCMc+qTQ4o7kWbTVrtFINTpr/L4JzRwx lSxzEKNE0MAfgxt0a+a/n9wmT49KjGHY99FoN8gHiHjf7kYGfxFdR817UYcranur XBBjNDiJ8Q8ghoo9PWOUUpmEGCl48zTbx2XHUoTZLSnvxab+/+gLwuI9/FcZJbwr fFhcrXV12foWTRurzsuAct/eUtU8esIg4BztLPnTlvq+/WFLxOoqfegmPkJLKaxO iMOvIA==

This is the 4th time I've reported this problem. Here's the warning I get every day only after I have already been loading Newsmax pages with no problems:

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…

There are no other sites in which I have this problem with FF x64 DE. In Edge, I see the newsmax pages load while the FF x64 DE https//newsmax.com xontinues to genberate the above message and fails to load the screen.

Please fix.

Thanks, WaltC

ATT is my internet service provider. I use their website as my home screen. Yesterday, I started getting an error message when I tried to go on-line. I have contacted ATT, and they have determined that the problem is with Firefox, and not their website. I can go from the ATT screen to any other website, and it works fine. This is the message that I get:

Secure Connection Failed

An error occurred during a connection to www.att.com. You are attempting to import a cert with the same issuer/serial as an existing cert, but that is not the same cert.

Error code: SEC_ERROR_REUSED_ISSUER_AND_SERIAL

   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.

got a new computer. Geek Squad added my firefox, but it now won't allow my worlplace (Lowes) for schedules and pay.

Secure Connection Failed

An error occurred during a connection to lius.myloweslife.com. Peer reports it experienced an internal error.

Error code: SSL_ERROR_INTERNAL_ERROR_ALERT

Firefox automatically updated on my old Mac (OS 10.15.7). Since then every website I try to access gives a "Security connection failed" - Amazon, Google, even Firefox support. What the heck has happened. This browser is useless now.

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

The connection to the server was reset 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.