How to Fix the error ERR_SSL_PROTOCOL_ERROR on Google Chrome

The “ERR_SSL_PROTOCOL_ERROR” occurs in Google Chrome when there’s an issue with establishing a secure connection to a website. This error is often caused by problems with the website’s SSL certificate, browser settings, or local network. Here are steps to troubleshoot and resolve this issue:


1. Check the Website

  • Verify SSL certificate validity: Use an SSL checker tool to see if the website’s SSL certificate is expired or misconfigured.
  • Try another website: Open other HTTPS websites to determine if the problem is specific to one website.

2. Clear Browser Cache and Cookies

  • Go to Settings ? Privacy and Security ? Clear browsing data.
  • Select Cookies and other site data and Cached images and files, then click Clear data.

3. Check Date and Time Settings

  • Ensure your computer’s date and time are correct.
  • Incorrect system time can interfere with SSL validation.

4. Disable Browser Extensions

  • Go to Settings ? Extensions.
  • Disable extensions one by one to identify if one of them is causing the issue.
  • Focus on security-related extensions like VPNs or ad blockers.

5. Update Google Chrome

  • Go to Settings ? About Chrome.
  • Update your browser if a new version is available.

6. Reset Chrome Settings

  • Go to Settings ? Reset settings ? Restore settings to their original defaults.

7. Check Network Settings

  • Clear SSL State:
    • Open the Control Panel ? Network and Sharing Center ? Internet Options ? Content ? Clear SSL State.
  • Disable Proxy Settings:
    • Open Settings ? Network & Internet ? Proxy and disable proxy servers if enabled.

8. Disable Antivirus or Firewall Temporarily

  • Some antivirus programs or firewalls might block SSL connections. Temporarily disable them and check if the issue resolves.

9. Update or Reinstall Network Drivers

  • Outdated or corrupted network drivers can cause SSL issues. Update them through Device Manager or reinstall if needed.

10. Flush DNS and Reset Network Settings

  • Open Command Prompt as Administrator.
  • Run the following commands:
    cmd
    ipconfig /flushdns
    ipconfig /release
    ipconfig /renew
    netsh int ip reset
    netsh winsock reset

11. Use a Different Network

  • Switch to a different Wi-Fi network or use mobile data to see if the problem is related to your ISP.

12. Contact the Website Administrator

  • If the error persists on one specific website, inform the site administrator. They might need to fix their SSL certificate or server configuration.
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