ERR_SSL_VERSION_OR_CIPHER_MISMATCH: How to fix

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If you are experiencing an error ERR_SSL_VERSION_OR_CIPHER_MISMATCH when using SSL, we understand your status at this time. You may be upset, angry. And I guess whoever falls into the situation as you will also react like that. And the article will help you fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH.

Upon learning about this error, the failure to use Google and Mozilla’s RC4 encryption caused an ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. So, there are four feasible solutions to get this error out of your system.

I know you want to fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH right now and that’s why I will not waste your time. But before you get to fix, there are a few things to keep in mind. These are:

  1. If a fix does not work, try the next one.
  2. Some of these fixes are not completely secure as they allow older, less secure protocols.

Solution 1: Enable all versions of SSL/TLS

Note: This step involves allowing older protocols, which may make the web unsafe. Take risks at your own risk.

  1. Open Chrome
  2. Click on the three dots you see in the top right corner
  3. Now go to Settings and search for ‘proxy’ in the search field
  4. You will see the Open proxy settings option, click on it
  5. Go to the Advanced tab
  6. Now mark all SSL & TLS versions
  7. Press the Apply button
  8. Restart Chrome

[Note: Although we offer this solution as a viable solution, I can not stress that this is a dangerous decision. Older versions of TLS and especially SSL exist for vulnerabilities. The better way is to contact the site owner and ask them to update their SSL / TLS settings to support only modern protocol versions. You really should not connect to anything before TLS 1.2 at this point. For clarity, we do not recommend enabling outdated SSL / TLS versions on your browser. For all intentions and purposes, this proposal, as well as Solution 2, is being presented for educational purposes

Solution 2: Disable Web Protection in your Antivirus/Firewall

We can not give you step-by-step instructions for this as they will be different for each firewall/antivirus. You can find what you are looking for on the web site of the provider.

As we did in the first step, here too, you will have to enable all versions of SSL & TLS.

Solution 3: Disable QUIC Protocol

  1. Search for chrome://flags/#enable-quic in the address bar
  2. Disable the Experimental QUIC protocol
  3. Relaunch Chrome

Solution 4: Clear your SSL status

  1. Open Chrome (obviously!)
  2. Click the three dots you see in the upper right corner
  3. Now click Settings
  4. Now go to Settings and search for ‘proxy’ in the search field
  5. You will see the Open proxy settings option, click on it
  6. Go to the Content tab
  7. Click Clear SSL state
  8. Relaunch Chrome

I hope one of these four solutions helped you fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH. If this still does not help you leave a comment below so we can help you