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Understanding and Fixing Google Chrome's ERR_SSL_VERSION_OR_CIPHER_MISMATCH Errors

As a web developer or someone who frequently accesses websites, you may have encountered an error message in Google Chrome that states “ERR_SSL_VERSION_OR_CIPHER_MISMATCH”. This error message usually indicates that there is an issue with the website’s SSL (Secure Sockets Layer) certificate, encryption, or security protocols. In this article, we’ll dive deeper into the causes of this error and provide steps to fix it.

Understanding the Error Message

Before we dive into the solutions to fix this error, let’s first understand the possible causes.

This error message usually appears when there is an issue with the SSL certificate that the website is using. SSL certificates are used to encrypt data between the website and the user’s browser, which ensures that the data cannot be intercepted by hackers or third parties.

Another possible cause is that the website is using outdated or weak encryption protocols that are not compatible with modern web browsers. Google Chrome, like many other web browsers, frequently updates its encryption standards and if a website hasn’t kept up with those updates, it can lead to this error.

How to Fix the Error

Here are some steps you can take to fix this error:

Step 1: Check the Website URL

Make sure that you’ve typed in the correct website URL and that you’re not accessing a fake or phishing website.

Step 2: Clear Browser Cache and Cookies

Clearing your browser cache and cookies can sometimes fix this error. To do this in Google Chrome, click on the three dots in the top right corner, then click on “More Tools”, and then click on “Clear browsing data”.

Step 3: Update Chrome and Operating System

Make sure that you’re using the latest version of Google Chrome and that your operating system is also up to date. This can often resolve compatibility issues between the website and the browser.

Step 4: Disable Antivirus or Firewall Temporarily

Your antivirus or firewall might be blocking the website’s SSL certificate or encryption protocol. Try disabling it temporarily and then accessing the website again to see if it resolves the error.

Step 5: Contact Website Administrator

If none of the above steps work, it’s possible that the issue is with the website’s SSL certificate or encryption protocol. Contact the website administrator or technical support for assistance.


Google Chrome’s ERR_SSL_VERSION_OR_CIPHER_MISMATCH error can be frustrating, but luckily there are steps you can take to fix it. By understanding the possible causes and following the steps outlined above, you can ensure that you’re able to access websites securely and without errors.

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