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How to Fix ‘Can’t Establish Secure Connection Error’ Issue in Safari Browser

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Safari is the browser that iOS and macOS users can trust while browsing online. It has some security features and built-in features that prevent the unsafe site from loading. It is a way of reminding people about potential security problems and malware. You can be careful online when Safari reminds you to verify the connection.

However, when Safari cannot verify this fact, it automatically calls the dangerous site and loads a warning message in the browser. Encryption is important here because protecting your privacy and security is crucial if you want to avoid problems like Safari errors.

ISP DNS

Click on the Apple icon and choose System Preferences. Then click on the Network icon and choose Advanced. Click on the DNS tab and delete any entry in the left pane, then click the + symbol and add 8.8.8.8 and then click the plus symbol again to add 8.8.4.4.

Weak encryption

When weak encryption is detected, Safari instantly drops the connection (it has not yet been determined which weak encryption detects first between Safari and the Mac system). But we all know that for our privacy and security, websites must be accompanied by strong encryption before a web connection can be established unconditionally. This has been especially emphasized after the efforts of OS X Yosemite (Version 10.10.4) and iOS 8.4 were boosted with additional security enhancements. So once the weak ciphers are met (or whatever the system presumes to be weak), Safari won’t be able to connect. This is how the error “Safari cannot establish a secure connection to the server” appears.

Then open the keychain. You can do it by clicking CMD + space bar; then enter “Keychain.” Or go to Utilities and access Keychain from there.

Then click on system roots for all entries. Here you will find your certificate and it will have a blue cross marked on it. Double click on it and another window will appear. You have the option of choosing a system configuration, always approve or always reject.

You will realize that the certificate was the problem from the beginning. Generally, a certificate will be blocked on the mail server and will prevent any other website from using it. (Your mail server should be the entry that begins with the prefix “smtp” and ends with a suffix “.dk”. The reason why the certificate would be blocked on the mail server is as good as it gets.

Change the certificate authentication to “System Settings”

There you go! All the pages you need will load smoothly in Safari. Problem solved.

Antivirus

If you are not up to the task of fiddling with certificates, it may be a good idea to first check the antivirus installed on your machine. Usually Avast is a notorious culprit on this front. Turn off Web Shield and see what happens. Most likely, Safari will instantly connect to previously banned sites. It will be up and running, but still, there is no explanation why Safari had worked before and suddenly stopped. Good luck with that.

IPv6

If option 2 still didn’t work for you and you don’t want to dig into the certificates and such, try isolating the device from the Wi-Fi network you’ve been using. Connect it to another Wi-Fi network and see if everything opens up smoothly. If you can connect to all websites, including previously blocked ones, turn off IPv6 on your router (if available) and through System Preferences -> Network -> Your network -> Advanced -> Disable IPv6 from here by selecting it as “Manually “

Final remarks: How to Fix ‘Can’t Establish Secure Connection Error’ Issue in Safari Browser

I hope you understand this article, How to Fix ‘Can’t Establish Secure Connection Error’ Issue in Safari Browser. If your answer is no, you can ask anything via the contact forum section related to this article. And if your answer is yes, please share this article with your friends and family to give us your support.

Dian Erwin
Dian Erwin
Dian Erwin is a writer for Bollyinside, covering topics related to computing, such as laptops, tablets, Windows, and iOS. Tony spends much too much of his free time on Twitter, reading speculative fiction novels, playing video games, and reading comic books. He also enjoys reading video game manuals.

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