Firefox Community Forum

Why are you closing the baked-in cert expiration support thread two days before it happens? Wouldn't it make a whole ton more sense to leave it open during the actual problem period?

https://support.mozilla.org/en-US/questions/1468274

Firefox is giving me an error on https://stemgateway.nasa.gov but the site is perfectly accessible using MS Edge and using Firefox on another computer. I uninstalled and reinstalled Firefox, changed the proxy settings to not use a proxy, tested a VPN, and changed DNS servers. Below is a picture of the error and of the certificate which seems to be present in Firefox already.

I am getting the below message when trying to log into the EFTPS site. I have never had this issue before.

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.eftps.gov because this website requires a secure connection.

What can you do about it?

www.eftps.gov 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.

If you are on a corporate network or using antivirus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

Learn more…

At your recommendation I signed up to Ad Avoid and now FireFox tells me that I could/should not access BT.Com because of the certificate issued by Ad Avoid

I confirmed with my host provider that my website is in a secure environment, but when I access three form pages that end in "php" there is a broken padlock icon in the address bar and says that the connection is not secure.

I checked other browsers (Edge, Chrome, & Brave) and all show a secure connection. So this only happens in the Firefox browser (v141.0). I'm using Windows 10 64bit.

Has anyone else had this issue? Any suggestions on how to fix?

The form is how my clients order on my website (no financial info is entered on the form, just data), and I fear that if they are using Firefox and see it's "not secure" they will leave.

I read the The Times in the UK and have no problem viewing on my iPad and Google Pixel phone using the Firefox browser. However on my laptop using Firefox I get a screen that says Secure connection failed and recommends contacting the vendor as there is no workaround. On microsoft Edge there is no problem I like Firefox but for me this is a major limitation. Any ideas or suggestions welcome

Subject: Urgent Assistance Needed with Certificate Installation

Dear Team,

I hope this message finds you well. I am in urgent need of assistance regarding a Linux-based system where we have the Firefox browser installed. I need to establish a secure connection with one of my servers, which requires the installation of a certificate.

However, I am unable to locate the certificate export button in the certificate view or anywhere else in the browser. I have tried several methods without success.

Could you please help me with this issue as soon as possible? Your guidance would be greatly appreciated.

Thank you very much!

Best regards, Kishor

When trying to access many popular websites with Firefox on my Fedora 43 installation, I am greeted with a security warning page with the SEC_ERROR_UNKNOWN_ISSUER error. For most of these websites I can simply accept and continue, but HSTS-only sites will not permit this.

Affected websites include but are not limited to (based on exceptions in the certificates section of Firefox settings):

• github.io (many subdomains)
• purdue.edu (many subdomains)
• iu.edu
• ebay.com
• cbsnews.com
• iwm.org.uk
• home.cern
• celestrak.org

Any help in resolving this is appreciated.

I get the following message when try to get https://webmail-oxcs.register.com./:

Secure Connection Failed

An error occurred during a connection to webmail-oxcs.register.com.. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   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.

I can bring up https://webmail-oxcs.register.com./ with Edge.

Learn more…

I have been receiving several similar emails that disrupt my email use. How do I remove from my computer? Here's an example: An error occurred during a connection to 6yv5qzb7f8.boats. 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

Can’t login to EFTPS.gov using Firefox and Login.gov. I receive an SSL error message.

Verified Firefox is rejecting 100% of all websites last few days and will not accept any Trust Certificates from Windows. Please correct and configure Firefox to Trust Windows Certificate store. Also is Firefox Mozilla using Windows DNS Servers , for security purposes ? Thank you Paul

Hi is many day i try to connect to chatgpt but return me this , (see attach foto ), is possible remove a check controll of certificate , is very useless and boring

thanks

I'm getting a PR_CONNECT_RESET_ERROR on my PC when trying to web browse. Same problem with other browsers. Was working fine till a few days ago The URL box has 'Not Secure' before each URL address I try. Have looked up solutions on YT to no avail eg clearing cache etc

My Laptop has no problem with this.

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.

Hello I have reinstalled my firefox on a new reinstall of windows 10 as my older version 10 crashed and went to the wall. however I have all my tabs and fafourites up and running but when i try and download my paid version of Nord VPN firefox comes back and says its not secure and wont load the website ? this has been working for me in the past. any advise would be greatfully accepted. thank you.

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!!!

How long before Nightly download site is available again?

https://download.mozilla.org/?product=firefox-nightly-latest-ssl&os=linux64&lang=en-US returns:

Did Not Connect: Potential Security Issue

Nightly detected a potential security threat and did not continue to download.mozilla.org because this website requires a secure connection.

What can you do about it?

download.mozilla.org has a security policy called HTTP Strict Transport Security (HSTS), which means that Nightly 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.

Learn more… Websites prove their identity via certificates. Nightly does not trust this site because it uses a certificate that is not valid for download.mozilla.org. The certificate is only valid for the following names: *.bbcollab.cloud, bbcollab.cloud

Error code: SSL_ERROR_BAD_CERT_DOMAIN

I cannot get past the secure connection failed! I have cleared cookies, cache, etc. I have turned off the firewall, and restarted my computer more times that I can count....