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How to Fix err_ssl_version_or_cipher_mismatch Error

In this article we’re going to help you fix err_ssl_version_or_cipher_mismatch Google Chrome error. It’s an SSL-related problem and, luckily, easy to fix.

These days most trustworthy websites use secure, encrypted connections. These connections rely on something called an SSL Certificate. Sometimes, when your browser doesn’t want to trust the SSL certificate it sees, it displays this error.

Why doesn’t your browser trust the certificate it finds? There are plenty of reasons, such as having an old operative system or an old browser. The website can also be blocked on your firewall or in your antivirus, forcing Google Chrome to display this error.

err_ssl_version_or_cipher_mismatch

However you should know that there are times where the error is only trying you to prevent from accessing a harmful website.

Well, how do we fix err_ssl_version_or_cipher_mismatch? There are several ways:

 

  1. Update your browser

This solution might seem too simple to work, but sometimes it does the trick. Err_ssl_version_or_cipher_mismatch can be displayed due to having an old version of Google Chrome.

Normally, Google Chrome updates on its own, but for some reason you might have automatic updates disabled or there might be a pending update waiting for you to close the browser so it can update it.

To update Google Chrome you need to:

  1. Open Google Chrome
  2. Click in the menu icon located at the top right corner
  3. Click “Update Google Chrome”. If you don’t see this button then it means you’re on the latest version
  4. Relaunch Google Chrome

 

  1. Change Your Chrome Security Settings

In order to try to access websites where the err_ssl_version_or_cipher_mismatch Chrome error is displayed, you can ask Chrome for it to accept the SSLv3 certificate version.

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To do so you need to:

  1. Open Google Chrome and type chrome://flags in the URL bar
  2. Search for Minimum SSL/TLS Version Supported
  3. Choose SSLv3
  4. Click on Relaunch Now
  5. Open the page you couldn’t access earlier
  6. On the new page that displays (one that says your connection is not private), click on the Advanced link
  7. Click on Proceed to your desired website (unsafe)

You should now be able to access the website you couldn’t before.

 

  1. Enable TLS 1.3

There can be another way to solve your problem, again by fiddling with Google Chrome’s security settings.

  1. Open Google Chrome and type chrome://flags in the URL bar
  2. Search for TLS 1.3 (if you hit CTRL + F you can search for it quicker by typing it into the search box that pops-up)
  3. If it’s disabled, choose Enable from the dropdown menu.
  4. Restart your browser and try to access the website

 

  1. Disable QUIC Protocol

Again, Chrome’s security settings might be the cause of your problems. As you can see, there are several ways to tackle the err_ssl_version_or_cipher_mismatch Chrome error. One of these ways is to disable the QUIC Protocol.

  1. Open Google Chrome and type chrome://flags in the URL bar
  2. Search for Experimental QUIC Protocol
  3. If it’s enabled, disabled it and restart your browser

 

  1. Delete Your Browser’s Cache and Cookies

Sometimes, your cache and your cookies can be causing this issue. To do so in Google Chrome you need to:

  1. Go to Google Chrome’s menu (by pressing the three dots on the top right corner) and click on Settings.
  2. Scroll down and click on Show Advanced Settings.
  3. Under the Privacy tab, click on Content Settings.
  4. Under Cookies click on All cookies and site data.
  5. Press Remove All and click Done.
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  1. Whitelist the Website You’re Trying to Access in Your Firewall and Antivirus Software

Your firewall or your antivirus might be blocking your connection to the website you’re trying to access. You may try and whitelist the connection on your firewall software and on your antivirus. It might be a long shot, but it can work.

 

  1. Clear Windows’ SSL Certificate Cache

Clearing your SSL Cache often fixes the err_ssl_version_or_cipher_mismatch error. Be advised that this only works on Windows. To do so:

  1. Go to the Control Panel
  2. Choose Internet Options
  3. Click on the Content tab
  4. Click on Clear SSL Slate and press OK

Your SSL Slate will be cleared and you will probably be able to access the website.

 

If you follow these steps you will probably be able to fix Google Chrome’s err_ssl_version_or_cipher_mismatch error. Let us know which solution worked the best for you.