Software⏱️ 3 min read📅 2026-06-15

How to Fix: ERR_SSL_VERSION_OR_CIPHER_MISMATCH error in Chrome

Chrome SSL version or cipher mismatch error on https sites in Windows 10.

Quick Answer: Try updating Chrome, disable extensions, or use a different browser.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. ✅ Best Solutions to Fix It
  3. 💡 Conclusion

The ERR_SSL_VERSION_OR_CIPHER_MISMATCH error in Google Chrome occurs when the browser is unable to establish a secure connection with an HTTPS site due to a mismatch between the supported SSL/TLS versions or ciphers. This issue affects users of Google Chrome version 48.0.2564.82 and onwards, on Windows 10 operating system.

This error can be frustrating as it prevents users from accessing secure websites, compromising their online security and data privacy. In this troubleshooting guide, we will walk you through the primary fix method to resolve this issue.

⚠️ Common Causes

  • The first main reason for this error is that the server hosting the HTTPS site may be using an outdated or unsupported SSL/TLS version or cipher. This can happen due to various reasons such as the server administrator's negligence, lack of knowledge about the latest security protocols, or simply not keeping up with the latest software updates.
  • Alternatively, it could also be caused by the user's browser settings or configuration issues. For instance, if the browser is set to use a specific SSL/TLS version or cipher that is not supported by the server, this can result in an ERR_SSL_VERSION_OR_CIPHER_MISMATCH error.

✅ Best Solutions to Fix It

Enabling Experimental Flags and Updating Chrome

  1. Step 1: Open Google Chrome and type 'chrome://flags/' in the address bar. Enable the 'Experimental Flags' option by toggling the switch to the right.
  2. Step 2: Search for 'ssl_version' or 'cipher_suite' in the flags list and enable the corresponding options. This will allow Chrome to use newer SSL/TLS versions and ciphers.
  3. Step 3: Restart Google Chrome after enabling these experimental flags to apply the changes.

Checking Server Configuration and Updating Software

  1. Step 1: Contact the server administrator or hosting provider to inquire about the currently used SSL/TLS version and cipher. They may be able to update it to a more modern version.
  2. Step 2: If the server is not under your control, you can try using a different browser that supports the required SSL/TLS version and cipher. This might require setting up a VPN or proxy server for Chrome.

💡 Conclusion

By following these steps, you should be able to resolve the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error in Google Chrome. Remember to always keep your browser and operating system updated with the latest security patches and software updates to minimize the risk of encountering this issue in the future.

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