Firefox Community Forum

Hello Mozilla Support, I am getting Error 526 when I try to open YouTube in Firefox. Other websites work normally, but YouTube does not open. I have already checked my internet connection and restarted Firefox, but the problem still exists. Please help me fix this issue.

Since I updated a week ago I keep getting a warning of a bad site on sites that I know and trust. The problem is www.ui-deref.com Any ideas how to correct this?

I periodically need to access a website with an expired or self-signed certificate. I understand the risks, but the browser won't let me. I've searched both the regular settings and about:config, but I can't find an option to restore the button to ignore the warning. How can I ignore the SEC_ERROR_BAD_SIGNATURE notification and proceed to the website I need?

As the title says, with both with https and http firefox displays this warning:

https://i.imgur.com/MQLsaCk.png

But no way to bypass it, trying to login to my ubiquiti edgerouter at http://192.168.1.1 or https://192.168.1.1

What can i do?

If I try to log into my router at 192.168.1.1 I get a message that says "Warning: Potential Security Risk Ahead". I expect that, but when I click on the Advanced button it doesn't do anything. Works fine with Chrome, so not my router or anti-virus. ???

Windows 10 Firefox 148.0

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.

Error Code: PR_CONNECT_RESET_ERROR

this is the entire error message.

It used to be possible to proceed if I clicked on "Advanced", However, I can no longer do this with the latest update of Firefox. It's this site: link text

It is very annoying to not be able to have acces to my scholarship, my accommodation, or just my whole student services in general even if they are websites from the french government. I cannot bypass the mozilla security risk warning so I'm asking for some help here. the website is https://messervices.etudiant.gouv.fr/

it would be a great update to be able to go past the warnings in the future, being unable to do so forces users to switch of browser, especially when you cannot have acces to such websites which are essential for students

brand new Dell Pro 14 Plus laptops (PB14250), Initial install of OS,(Win 11 Enterprise, v 26200 25H2). All updates from Dell and Microsoft. Laptop is domain joined, on a hardline network connection. Only other browser is Edge, and has no issues. Installed fresh install of Firefox x64 (v153.0) to machine. ALL SITES attempted return this error. Google, Amazon, even trying to get to the support.mozilla.org return this error. In lower left while trying, the messages relating to the TLS handshake being performed can be seen. Disabled Proxy, restarted and no change. Disabled enterprise root certificate, restarted and no change Uninstalled, power cycled Laptop, reinstalled, power cycled, no change Issue is not preset at all with Edge. User needs Firefox as a specific critical vendor only supports Firefox for their portal.

Secure Connection Failed

An error occurred during a connection to www.amazon.in. The OCSP response is not yet valid (contains a date in the future).

Error code: SEC_ERROR_OCSP_FUTURE_RESPONSE

   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 wish to add an exception to an address which I host locally. I've explored many options which didn't work such as: Adding HTTPS-Only Exception Disabling certain security features

In this case I accessed my Acer account and clicked on my notebook. I then got the screen shown in the image. I could access the page with Opera, Chrome, and Edge.

This is happening a lot, and is rendering Firefox unusable as my default browser.

www.sejda.com,Your Computer Clock is Wrong Your computer thinks it is Jul 11, 2026, which prevents Firefox from connecting

I'm trying to access livingshield.org? When I try to access this website, I keep receiving secured connection failed. I need to access this website to register for courses

All of a sudden almost every site I try to enter comes up with "Secure Connection Failed". This started happening on Friday, July 10th for the first time. I've read almost every article in the Firefox's community forums and tried multiple actions and nothing stops this. I don't know why this all of a sudden when it never did this before. I hope someone can tell me how to stop this from happening].

This is the message I get:

Secure Connection Failed An error occurred during a connection to www.gyroscopereview.com. SSL received a record that exceeded the maximum permissible length.

Because other users (including people who use Firefox) are able to reach this site with no problem, I hope someone can tell me what the issue might be. Thanks