ERR_SSL_PROTOCOL_ERROR Explained – Here’s How to Fix This

In today’s digital age, secure communication over the internet is of utmost importance. SSL (Secure Sockets Layer) is a crucial component of secure online communication, ensuring that data transmitted between a web server and a client remains encrypted and protected.

However, encountering SSL connection errors can be frustrating, and one such error is the ERR_SSL_PROTOCOL_ERROR. In this article, we will delve into the causes and solutions for this error while using simple and easy-to-understand language to cater to our viewers.


The ERR_SSL_PROTOCOL_ERROR is an error message that appears in your web browser when there is a problem with the SSL/TLS protocol during a secure connection establishment. When you encounter this error, it means that the browser couldn’t establish a secure connection with the website you’re trying to visit, preventing you from accessing it.


Outdated Browser

An outdated browser might lack support for the latest SSL/TLS protocols. Update your browser to the latest version to ensure compatibility and resolve the SSL protocol error.

Incorrect Date and Time Settings

SSL certificates have an expiration date. If your device’s date and time settings are incorrect, it may lead to an SSL protocol error. Verify and adjust the date and time settings to resolve the issue.

Antivirus or Firewall Interference

Sometimes, antivirus software or firewall settings can interfere with SSL connections, causing the ERR_SSL_PROTOCOL_ERROR. Temporarily disable your antivirus or firewall and check if the error persists. If it resolves the issue, consider adjusting the settings to allow SSL connections.

Untrusted or Expired SSL Certificate

If a website’s SSL certificate is expired or not trusted by your browser, the ERR_SSL_PROTOCOL_ERROR may occur. Exercise caution when accessing websites with untrusted certificates, as it could indicate a potential security risk.

SSL/TLS Configuration Issues

Misconfigured SSL/TLS settings on the server side can also trigger SSL protocol errors. Website administrators should ensure the proper configuration of SSL/TLS protocols, ciphers, and certificates.

Troubleshooting the ERR_SSL_PROTOCOL_ERROR

1. Clear Browser Cache and Cookies

Clearing your browser’s cache and cookies can often resolve SSL connection issues. These temporary files may conflict with SSL certificates, causing the ERR_SSL_PROTOCOL_ERROR. Clearing them can eliminate any potential conflicts.

2. Disable Extensions and Add-ons

Browser extensions and add-ons can sometimes interfere with SSL connections. Disable any recently installed or suspicious extensions and try accessing the website again.

3. Check for HTTPS URL

Ensure that you are accessing the website using the correct URL with “https://” at the beginning. This indicates a secure connection and is necessary to establish a successful SSL handshake.

4. Restart Your Device

Sometimes, a simple restart of your computer or mobile device can resolve temporary network or software glitches causing the SSL protocol error.

5. Contact the Website Administrator

If the ERR_SSL_PROTOCOL_ERROR persists for a specific website, reach out to the website administrator or support team. They can provide insights into any ongoing server-side issues or misconfigurations.


In conclusion, there you have it! Now you know how to fix the ERR_SSL_PROTOCOL_ERROR. By following the troubleshooting steps outlined in this article, you can overcome this error and regain access to secure websites.

Remember to keep your browser up to date, check your device’s date and time settings, and be cautious when encountering untrusted SSL certificates. Clearing your browser cache and disabling extensions can also help resolve the issue. If the problem persists, don’t hesitate to reach out to the website administrator for further assistance.

With these solutions in your toolkit, you can confidently navigate the online landscape and ensure secure connections while browsing the internet.

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