In the Firefox browser, the error message “secure connection failed” indicates that there is a problem with your internet connection or server. If you try to access any website or web page that requires a secure internet connection, you will almost certainly see this error message. On the internet, faults are common, and you’ve probably come across a slew of them while online.

Connections that are secure can have a failed error and it is a regular issue for Firefox or  Google Chrome users. When you type a URL address into your web browser, it sends a request to the DNS to contact the requested website. The browser attempts to create a secure connection during this time.

You won’t be able to connect to the server if you see a popup error message. This error code is most commonly seen while utilizing the SSL (secure socket layer) protocol.

If you find yourself in this situation, go through our comprehensive guide for a list of easy and efficient answers. There are a few options for resolving the Firefox secure connection failed problem, which we’ll go through in this post. One of these will fix the problem, allowing you to return to your favorite website as quickly as possible.

What Is “Secure Connection Failed And Firefox Did Not Connect”?

A connection that is secure The security certificate may be invalid, expired, or just absent, resulting in a failed error. This warning is frequently correct since the browser is attempting to alert you that the connection is insecure and that proceeding might result in major problems.

A connection that is secure Failed error is a regular issue for Firefox users, and it may also happen with Google Chrome.

In the Firefox browser, the error message “secure connection failed” indicates that there is a problem with your internet connection or server. If you try to access any website or web page that requires a secure internet connection, you will almost certainly see this error message.

When you access or view any website or webpage on your PC’s browser, you may see these types of error code notifications.

How to Fix the ERR_SPDY_PROTOCOL_ERROR in Chrome

Now let’s get down with our main event and learn about how you can fix the problems. Use the simple steps below.

Step 1: Manually enabling and disabling DNS-over-HTTPS

When you type a web address or domain name into your address bar, your browser sends a request over the Internet to look up the IP address for that website. Traditionally, this request is sent to servers over a plain text connection. This connection is not encrypted, making it easy for third parties to see what website you’re about to access.

To do this;

• Go to the Open network and sharing centre option and click on it, or go to the control panel and click on it.

• Select the properties option from the drop-down menu.

• A pop-up message will appear, and you must select the “Internet Protocol version 4” option and then click on its attributes.

• Select “use the following DNS server addresses” from the drop-down menu.

• Replace as the preferred DNS server and as the alternate DNS server.

• After you’ve changed the servers, check the box that says “Validate settings upon exit” and then click “OK” to preserve the changes.

• Once you’ve closed the existing tabs, you’re done!

These are some of the most efficient methods and tricks for permanently resolving Firefox’s secure connection issues. Incorporate these simple strategies whenever you want assistance in resolving or repairing secured connection failure error messages.

Step 2: Check your Firefox proxy Setting

This error may occur if your computer is set up to access the internet using a proxy server.

  • Select the Options tab from the Tools menu in the Firefox menu bar.
  • Now choose the Network tab from the Advanced panel.
  • In the Connection area, click the Setting button.
  • Connection Setting will appear as a popup on your screen.

Check if a Manual proxy connection is chosen in the Connection Setting box. If this option is chosen, your computer is set up to use a manual proxy server. As a result, double-check that all of the protocol fields (HTTP Proxy, SSL Proxy, FTP Proxy, SOCKS Host) are filled incorrectly. If not, make the necessary changes and click OK. We highly advise you to contact your network administrator if you have any issues throughout this procedure.

DO NOT make any modifications to the Manual proxy connection if it is not chosen. Simply exit the window and contact the network administrator.

Step 3: Check your Security Software for SSL Scanning

SSL Scanning, often known as SSL filtering, is a capability found in every security software. This feature is meant to prevent you from visiting a website with an expired SSL Certificate by mistake (this is an algorithm that is supposed to protect your data on any website it is installed on).

However, your security software may block you from visiting a website if the SSL Certificate for that website has been marked as expired or invalid by your security software.

To remedy this, go to the settings section of whatever security program you’re using and look for the SSL scanning feature. Once you’ve found it, uncheck the box that says it’s turned on.

After disabling this function in your security program, you should try re-accessing the page.


  • Question: What is secure connection failed in Firefox?

Answer: Secure Connection Failed warning pages with Error code: SSL ERROR UNSUPPORTED VERSION and a message indicating This website might not support the TLS 1.2 protocol, which is the minimal version supported by Firefox, will appear on websites that do not support TLS version 1.2 or higher.

  • Question: How do I fix Firefox?


  1. Your computer should be restarted. Occasionally, difficulties can be resolved by restarting your computer and relaunching Firefox.
  2. Clear your cache and cookies.
  3. In Safe Mode, restart Firefox.
  4. In Troubleshoot Mode, restart Firefox.
  5. Firefox should be reinstalled… Firefox should be refreshed…
  6. Make a new profile in Firefox.
  • Question: Why does it say this site can’t provide a secure connection?

Answer: A issue with the SSL certificate is indicated by the message “This site can’t offer a secure connection.” In other words, the site claims to be HTTPS-compliant, yet it either doesn’t provide or uses an incorrect certificate.

  • Question: How do I uninstall and reinstall Firefox?

Answer: Control Panel may be found in the Start Menu. Under the Programs area of the Control Panel window, click the Uninstall a software link. Select Mozilla Firefox from the list of currently installed apps. To begin the uninstall, go to the top of the list and choose Uninstall.

Closing Words

If you see the “Secure Connection Failed And Firefox Did Not Connect” message, you may be unable to access your favorite websites. Using the tactics discussed in this article, this problem can be easily solved. The problem should have been fixed using one of the methods indicated above.

If the problem persists when you visit the same page, the solution may lie in one of these ways. Although you may be unfamiliar with the technology involved, one of these solutions should work for you if you simply follow the directions.

The “Secure Connection Failed And Firefox Did Not Connect” problem message is pervasive. Depending on the reason for the error, the procedures indicated above have all successfully fixed it.