Safari can’t establish a secure connection
Can’t establish a secure connection is an error that usually occurs when using the web browser, Safari. It may mean that the webpage is on a server that does not meet secure cryptographic standards. When the error occurs, the website you are trying to open may be using a weak encryption or Safari cannot connect to its server.
Solution 1. Use a DNS address
Safari can’t establish a secure connection may due to the obtained DNS server, or your connection is checked by a firewall. Try to configure your DNS using Google public DNS, see if it fixes the problem. If it does, you might under a firewall or you have obtained a bad DNS address.
- Go to the Apple menu and select “System Preferences.”
Select the “Network” control panel.
- In the left side, select the network interface that you are using.
- Then click “Advanced.”
- Then click “DNS” tab.
- Click + button to add a new DNS address.
- Add 220.127.116.11 and 18.104.22.168.
- When finished, click Ok.
- Then click Apply.
Solution 2. Disable third-party software
“Safari can’t establish a secure connection” may also due to third-party software, this includes antivirus. Due to antivirus Web protection protocol, it prevents you to access a specific site. Try to disable all third-party software that runs in the background, to roll-out other interference.
Running your operating system in clean boot may disable all third-party software that runs on startup.
- Restart the computer.
- If you have a login window, hold Shift key before pressing login button. Release when you’re on the Desktop.
- If you do not use login window, hold Shift when progress bar start. Release when you’re on the Desktop.
- Try surfing the inter using Safari.
Solution 3. Turn off IPv6
The IPv6 might be causing a conflict to your IPv4, which result to “Safari can’t establish a secure connection.” Try to disable IPv6, it might solve the problem. See steps below.