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How to Fix Err_SSL_Protocol_Error: 10 Simple and Quick Methods

Written By: author avatar Regina Patil
author avatar Regina Patil
Hey there! I'm Regina, an SEO Content Writer at Seahawk. My role involves writing various content formats, including website content, SEO articles, and in-depth blog posts.
How to Fix Err_SSL_Protocol_Error

Encountering the ERR_SSL_PROTOCOL_ERROR can be frustrating. It indicates a problem with establishing a secure connection through SSL. However, there are many solutions that can quickly resolve this issue. In this guide, we have listed actionable methods to address the ERR_SSL_PROTOCOL_ERROR. These methods range from quick fixes to advanced troubleshooting and SSL certificate resolutions. By methodically applying these solutions, you can restore secure access to websites.

What Is ERR_SSL_PROTOCOL_ERROR?

ERR_SSL_PROTOCOL_ERROR is a common issue that arises when a web browser and a website’s server cannot establish a secure connection i.e. the missing padlock icon when you open an URL. This happens due to problems with the SSL/TLS handshake, which is essential for secure data transmission. Several factors can cause this error, including outdated software, improper configurations, or issues with the SSL certificate itself. 

Err_SSL_Protocol_Error

Users often encounter this error in popular browsers such as Google Chrome and Microsoft Edge. Resolving it typically involves updating software, checking security settings, or ensuring the SSL certificate is correctly configured. Thus allowing for the safe establishment of a secure connection between the browser and server.

Read: How to Install a Free SSL Certificate in WordPress

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Troubleshooting Steps to Fix Err_SSL_Protocol_Error

When faced with the ERR_SSL_PROTOCOL_ERROR, several troubleshooting steps can help restore a secure connection between your browser and a website’s server. These steps address both simple and complex issues, guiding you toward a quick resolution of this common error.

Quick Fixes to Resolve Err_SSL_Protocol_Error

When encountering the ERR_SSL_PROTOCOL_ERROR, swift and straightforward fixes can often resolve the issue. These quick methods address common problems at the user’s end, enabling a smoother experience without extensive troubleshooting.

  • Clear SSL State: Clearing the SSL state on your computer can resolve temporary connection issues. This is particularly useful if the SSL cache has stored outdated certificates. For example, on Windows, go to Internet Security Options, select the “Content” tab, and click “Clear SSL state.”
  • Check System Date and Time: An incorrect date and time can interfere with SSL certificates, leading to the error message. Ensure your device’s clock is accurate. For instance, on a Mac, you can adjust this under System Preferences ⟶ Date & Time.
  • Clear Browser Cache and Cookies: Over time, browsers accumulate cache and cookies that may cause connection errors. Clearing browser data and cache can resolve the problem. In Google Chrome, for example, you can do this via Settings ⟶ Privacy & Security ⟶ Clear browsing data.
  • Use a Different Network: Sometimes network-related issues cause SSL errors. Switching to a different network can help determine if the problem is network-specific. For instance, internet users using Wi-Fi, try connecting through a mobile hotspot to see if the error persists.

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Browser-Specific Solutions to Fix Err_SSL_Protocol_Error

Some solutions for the ERR_SSL_PROTOCOL_ERROR are specific to browser settings. Browser-specific adjustments can address compatibility issues and eliminate errors to provide a secure connection while improving your browsing experience.

browser-specific-solutions-for-Err_SSL_Protocol_Error
  • Disable Browser Extensions: Extensions can sometimes interfere with SSL connections, causing errors. Disabling them can help identify if an extension is the culprit. For example, in Google Chrome, go to Settings ⟶ Extensions and toggle off extensions one by one to see which might be causing the issue. You can also try to restart Chrome after disabling the extensions.
  • Update Browser: Running an outdated browser can lead to security and compatibility problems. Updating to the latest version ensures you have the newest security patches. In Mozilla Firefox, for instance, you can update through Settings ⟶ Help ⟶ About Firefox, which will prompt updates if available.
  • Disable QUIC Protocol: The QUIC protocol, enabled by default in some browsers, can cause SSL errors. Disabling it might resolve the issue. In Chrome, type chrome://flags/ in the address bar, search for “QUIC,” and set “Experimental QUIC protocol” to “Disabled.”

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Advanced Troubleshooting Tips to Fix Err_SSL_Protocol_Error

For persistent ERR_SSL_PROTOCOL_ERROR issues, advanced troubleshooting steps may be necessary. These steps involve more technical adjustments that can address deeper issues related to secure connections.

  • Check Firewall and Antivirus Settings: Firewalls and antivirus software can block SSL connections. Adjusting settings or temporarily disabling these programs can help identify if they’re causing the problem. For example, in Norton Antivirus, go to “Settings,” find “Firewall,” and modify settings that may be blocking SSL. You can also check the default Windows firewall for any issues.
  • Ensure TLS Protocols Are Enabled: SSL and TLS protocols must be enabled for secure connections. Ensure that your browser supports the necessary versions. In Internet Explorer, go to Internet Options ⟶ Advanced and verify that TLS 1.2 or later is checked.
  • Check Web Server Configuration: Improper server side setups can lead to SSL errors. Ensure server configurations are correct. For example, verify that the SSL certificate is properly installed and configured on the server. Tools like SSL Labs can help test and diagnose server configurations.
  • Verify TLS Handshake Success: The TLS handshake must be successful for a secure connection. Use network diagnostic tools to trace and identify handshake failures. For instance, OpenSSL can help test server responses and handshake integrity.
  • Check Certificate Authority Issues: Problems with the certificate authority can disrupt SSL connections. Ensure the certificate chain is complete and trusted by browsers. For example, check if intermediate certificates are correctly installed and up-to-date.

Read: How to Fix ERR_TOO_MANY_REDIRECTS Error on Your WordPress Site

Resolving SSL Certificate Issues to Fix This Error

SSL certificate problems are common causes of the ERR_SSL_PROTOCOL_ERROR. Addressing issues with the certificates themselves can eliminate the error and ensure a secure connection.

resolving-SSL-certificate-sssues-to-fix-this-error
  • Check Server for SSL Certificate Issues: SSL certificate issues on a server often lead to errors during the connection process. Make sure that the SSL certificate is valid and properly configured. For example, verify the certificate installation on your server through your hosting provider’s dashboard or using server diagnostic tools like SSL Labs.
  • Ensure Certificate Issued by a Trusted Authority: Certificates must be issued by a trusted certificate authority (CA) for browsers to accept them. Confirm that your SSL certificate is from a recognized CA. For instance, check the CA’s reputation and ensure it’s listed as trusted in most web browsers.
  • Check Certificate Chain for Issues: A complete and accurate certificate chain is crucial for SSL verification. Ensure that all necessary intermediate certificates are included and correctly installed. Use tools like OpenSSL or SSL Labs to analyze the certificate chain and identify any missing or incorrect certificates.

Learn: How to Fix CORS Error in WordPress

Preventing Future Err_SSL_Protocol_Error

To minimize occurrences of ERR_SSL_PROTOCOL_ERROR, proactive measures are essential. Implementing regular website maintenance and updates can ensure seamless and secure browsing experiences.

  • Regularly Update Web Browser and Operating System: Keeping your web browser and operating system up-to-date is crucial for security and functionality. Updates often include patches for vulnerabilities that could lead to SSL errors. For example, enable automatic updates for Google Chrome and Windows OS to ensure you have the latest security features.
  • Ensure SSL Certificate is Properly Configured and Up-to-date: Maintaining an up-to-date SSL certificate prevents many common errors. Regularly renew and verify the certificate’s validity and configuration. For instance, use reminders for certificate expiration dates and check configurations through control panel tools provided by your web host.
  • Regularly Check Web Server Configuration: Consistent checks of your web server configuration help preempt common issues leading to SSL errors. Regular website audits can identify and correct potential misconfigurations. For example, schedule periodic server diagnostic reviews using tools like SSL Labs to ensure optimal server security settings.

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Conclusion

Addressing the ERR_SSL_PROTOCOL_ERROR involves a mix of simple adjustments and technical troubleshooting. Quick fixes can resolve immediate issues. For more persistent errors, advanced troubleshooting is essential. Regular updates and configurations also play a critical role in preventing these errors in the future. 

In emergencies, seeking professional WordPress support can be invaluable. Experts can quickly diagnose and resolve SSL-related issues, ensuring minimal disruption to your website’s accessibility and security. 

They can also offer guidance on maintaining optimal SSL configurations to prevent future occurrences, thus helping you maintain your website’s integrity and trustworthiness. In addition, they can fortify your website’s defenses through robust security tools and much more.

FAQs About Err_SSL_Protocol_Error

How to disable ERR_SSL_PROTOCOL_ERROR in Google Chrome?

You can’t entirely disable the ERR_SSL_PROTOCOL_ERROR in Chrome because it serves as a security measure to protect users from untrusted connections. However, you can bypass it temporarily by clicking on “Advanced” and then “Proceed to [site]” if you trust the website. This is not recommended due to potential security risks. It is better to fix the underlying causes.

How to fix the err SSL protocol error for a secure connection?

To fix the ERR_SSL_PROTOCOL_ERROR, try these steps:

  • Verify and update the SSL certificate on the server.
  • Clear your browser’s cache and cookies.
  • Check your system’s date and time settings.
  • Ensure your browser and operating system are up to date.
  • Disable any conflicting browser extensions.
  • Check your network and firewall settings.

How do I fix SSL TLS error?

To resolve SSL/TLS errors, consider the following:

  • Check for issues with the certificate chain and ensure it’s complete.
  • Ensure TLS protocols are enabled in your browser settings.
  • Update your browser to the latest version.
  • Clear your SSL state in system settings (e.g., Internet Options on Windows).
  • Verify that your SSL certificate is correctly installed and valid.

How do I fix SSL security errors?

For fixing SSL security errors:

  • Review your server’s SSL configuration for any potential misconfigurations.
  • Verify that the SSL certificate is up-to-date and issued by a trusted authority.
  • Ensure all intermediate certificates are correctly installed on the server.
  • Update root certificates on client systems if necessary.
  • Use online tools like SSL Labs to diagnose and identify specific SSL issues.

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