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ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chromium [SOLVED]: The main cause of this error is that your computer cannot determine a private connection with the web portal. The web portal is using an SSL certificate which is causing this error. The web portal is using an SSL certificate that processes sensitive information such as credit card information or passwords.

A secure connection cannot be determined because this site uses an unsupported protocol. Error code: ERR_SSL_VERSION_OR_CIPHER_MISMATCH


As long as you use the aforementioned web portal, your browser downloads the Secure Sockets Layer (SSL) security certificates from the web portal to determine a secure connection, but from time to time the downloaded certificate is corrupted or your computer settings do not match that of the SSL certificate. In this circumstance, you will see ERR_SSL_VERSION_OR_CIPHER_MISMATCH error and you may not be able to enter the web portal, but don't worry, we have listed some methods that will help you to fix this problem.

It is a prior requirement:

  • Check if you can enter another Https-enabled web portal because if so, then there is an obstacle with that particular web portal, not with your computer.
  • Make sure you have cleared the caches and cookies on your computer. clear-browsing-data-in-google-chrome-9267290
  • Remove unnecessary chrome extensions that could be causing this problem. delete-unnecessary-chrome-extensions-2215794
  • Proper connection to Chrome is allowed through Windows Firewall. make-sure-google-chrome-is-allowed-to-acces-internet-in-firewall-5397305
  • Make sure you have a proper internet connection.


Make sure to create a restore point in case something goes wrong.

Method 1: Disable SSL / HTTPS scanning

Sometimes your antivirus has a feature called SSL / HTTPS protection or scanning that does not allow Google Chrome to provide default security, which in turn causes the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error.



To fix the problem, try turning off your antivirus software. If the website works after disabling the software, please disable this software when using secure sites. Remember to reactivate the antivirus program when you have finished. And after that, disable HTTPS scanning.


Method 2: Enable SSLv3 or TLS 1.0

1.Open your Chrome browser and type the following URL: chrome: // flags

2.Press Enter to open the security settings and find the minimum version of SSL / TLS supported.


3.From the dropdown change it to SSLv3 and close everything.

4.Restart your computer to save the changes.

5.Now it may be possible that you will not find this setting since it is officially finished with chrome, but avoid worrying, follow the next step if you still intend to enable it.

6. In the Chrome Browser, open the proxy settings.


7.Now navigate to the advanced tab and scroll down until you find TLS 1.0.

8. Make sure to check Use TLS 1.0, Use TLS 1.1, and Use TLS 1.2. Also, uncheck Use SSL 3.0 if it is checked.


9.Click Apply then OK and restart your computer to save the changes.

You can also check it:

  • Fix connection time issue in Google Chrome
  • How to fix SSL connection error in Google Chrome
  • How to fix this site cannot be reached error in Gooogle Chrome
  • How to fix server certificate has been revoked in chrome
  • Fix ERR_TUNNEL_CONNECTION_FAILED error in Google Chrome
  • How to fix SSL certificate error in Google Chrome

Method 3: Make sure the date / time on your computer is correct

1.Click on the date and time on the task bar and then select "Date and time settings".

2.If in window 10, make "Set time automatically" to "on".


3.For others, click on "Internet Time" and check the box "Automatically sync with Internet time server".


4.Select the server "" and click update and "OK". You do not need to complete the update. Just click OK.

See if you are able to fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome, if not then proceed to the next method.

Method 4: Disable the QUIC protocol

1.Open Google Chrome and type chrome: // flags and hit enter to open settings.

2.Scroll down and find the experimental QUIC protocol.


3. Next, make sure it is set to be disabled.

4.Restart your browser and you will be able to fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome.

Method 5: Clear the SSL certificate cache

1.Press Windows key + R, then type "inetcpl.cpl" and press Enter to open Internet Properties.


2.Switch to the Content tab, then click Remove SSL Status, and then click OK.


3.Now click Apply and then OK.

4.Restart your computer to save the changes.

Method 6: Run CCleaner and Malwarebytes

1.Download and install CCleaner and Malwarebytes.

2. Launch Malwarebytes and let it scan your system for harmful files.

3.If malware is found, it will remove it automatically.

4.In the "Cleaner" section, under the Windows tab, we recommend that you check the following selections to be cleaned:


5.Once you make sure the correct points are checked, basically click Run Cleaner, and let CCleaner run its course.

6.To clean your system, select the Registry tab and make sure the following is checked:


7.Select Scan by problem and allow CCleaner to scan it, then click Fix selected problems.

8.When CCleaner asks "Do you want to back up the registry changes?" select Yes.

9.Once your backup is complete, select Fix all selected issues.

Method 7: Miscellaneous Fix

Chrome is up to date: Make sure Chrome is up to date. Click on the Chrome menu, in Help and select Regarding Google Chrome. Chrome will check for updates and click Relaunch to apply any available updates.


Restart the chrome browser: Click on the Chrome menu, then select Settings, Show advanced settings and in the "Reset settings" section, click on Reset settings.


Use the Chrome Cleanup Tool: The official Google Chrome Cleanup Tool helps to analyze and erase the software that may be causing the chrome problem, for example, crashes, unusual home pages or toolbars, unexpected ads from that you cannot undo or changes in the browsing experience.


The above fixes will definitely help you fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome, but if you are still experiencing the error then as a last resort you can reinstall your Chrome browser.

Method 8: Reinstall the Chromator

1.Press Windows Key + X and then click Control Panel.


2. Click Uninstall a program under Programs.


Search for Google Chrome, then right-click on it and select Uninstall.


4.Restart your computer to save the changes, and then open Internet Explorer or Edge.

5.Then go to this link and download the latest version of Chrome for your computer.

6.Once the download is complete, be sure to run and install the setup program.

7.Close everything once the installation is complete and restart your computer.

You can also check it:

  • Fix connection time issue in Google Chrome
  • How to fix SSL connection error in Google Chrome
  • How to fix this site cannot be reached error in Gooogle Chrome
  • How to fix server certificate has been revoked in chrome
  • Fix ERR_TUNNEL_CONNECTION_FAILED error in Google Chrome
  • How to fix SSL certificate error in Google Chrome

That's it, you have successfully fixed ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome Error, but if you still have any questions about this guide, feel free to ask them in the comment section.

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