Software⏱️ 3 min read📅 2026-06-19

How to Fix: trying to make a secure connection to a website, I get the error "ERR_SSL_VERSION_OR_CIPHER_MISMATCH"

Error occurs when trying to establish a secure connection to a website, but not in Firefox.

Quick Answer: Check the website's SSL version and cipher settings, as some websites may use outdated or incompatible versions.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🚀 How to Resolve This Issue
  3. 🎯 Final Words

The user is experiencing an error 'ERR_SSL_VERSION_OR_CIPHER_MISMATCH' when trying to make a secure connection to a website in Chrome and Microsoft Edge, but not in Firefox. This issue affects only one support guy's PC, indicating a potential configuration or software conflict.

This error can be frustrating for the user as it prevents them from accessing the desired website securely. The goal of this troubleshooting guide is to help resolve the issue and restore secure browsing capabilities.

💡 Why You Are Getting This Error

  • The primary reason for this error is an incompatibility between the browser's SSL/TLS version or cipher suite and the server's configuration. This can occur due to outdated software, misconfigured network settings, or conflicting extensions.
  • Another possible cause is a mismatch between the browser's default security settings and the website's requirements. For example, some websites may require specific cipher suites for secure connections.

🚀 How to Resolve This Issue

Updating Browser Extensions and Checking Network Settings

  1. Step 1: Step 1: Open Chrome or Microsoft Edge and navigate to the browser's extensions page. Disable any recently installed or suspicious extensions, as they might be causing the issue.
  2. Step 2: Step 2: Check the network settings for both browsers. Ensure that the 'Use secure connections (SSL)' option is enabled in the browser settings. Also, verify that the network adapter is configured correctly and not blocking the SSL/TLS handshake.
  3. Step 3: Step 3: Clear the browser's cache and cookies, as outdated or conflicting data might be contributing to the issue.

Updating Browser and Operating System

  1. Step 1: Step 1: Update the operating system and all installed software, including browsers, to the latest versions. This can help resolve any compatibility issues.
  2. Step 2: Step 2: Install a reputable SSL/TLS version manager tool or extension, which can help identify and fix incompatible cipher suites.

🎯 Final Words

To resolve the 'ERR_SSL_VERSION_OR_CIPHER_MISMATCH' error, try updating browser extensions and checking network settings. If the issue persists, update the browser and operating system to the latest versions and consider using a SSL/TLS version manager tool or extension.

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