ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Chrome [SOLVED]: The main cause of this error is your PC not being able to establish a private connection with the website. The website is using an SSL certificate which is causing this error. An SSL certificate is used on the website which processes sensitive information such as Credit Card information or Passwords.

A secure connection cannot be established because this site uses an unsupported protocol.


Whenever you use the above website, your browser downloads the Secure Sockets Layer (SSL) security certificates from the website in order to establish a secure connection but sometimes the downloaded certificate is corrupted or your PC configuration is not matching that of the SSL certificate. In this case, you will see the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error and you might not be able to access the website but don’t worry we have listed a few methods which will help you fix this issue.


  • Check if you can access other Https enabled websites because if this is the case, then there is a problem with that particular website, not your PC.
  • Make sure you have clear your Browser Caches and Cookies from your PC.
  • Remove unnecessary Chrome extensions which might be causing this issue.
  • A proper connection is allowed to Chrome through Windows Firewall.
  • Make sure you have a proper internet connection.


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

Method 1: Disable SSL/HTTPS Scan

Sometimes antivirus has a feature called SSL/HTTPS protection or scanning which doesn’t let Google Chrome provide default security which in turn causes ERR_SSL_VERSION_OR_CIPHER_MISMATCH error.

Disable https scanning

bitdefender turn off ssl scan

To fix the problem, try turning off your antivirus software. If the web page works after turning off the software, turn off this software when you use secure sites. Remember to turn your antivirus program back on when you’re done. And after that disable HTTPS scanning.

Disable anitvirus program

Method 2: Enable SSLv3 or TLS 1.0

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

2. Hit Enter to open security settings and find Minimum SSL/TLS version supported.

Set SSLv3 in Minimum SSL/TLS version supported

3. From the drop-down change it to SSLv3 and close everything.

4. Reboot your PC to save changes.

5. Now it might be possible you won’t be able to find this setting as it’s officially ended by chrome but don’t worry follow the next step if you still want to enable it.

6. Press Windows Key + R then type inetcpl.cpl and hit Enter to open the Internet Properties window.

Press Windows Key + R then type inetcpl.cpl and click OK

7. Now navigate to the Advanced tab and scroll down till 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 checked.

Note: Older versions of TLS such as TLS 1.0 have known vulnerabilities, so continue at your own risk. 

check Use TLS 1.0, Use TLS 1.1 and Use TLS 1.2

9. Click Apply followed by OK and restart your PC to save changes.

Method 3: Make sure your PC Date/Time is correct

1. Press Windows Key + I to open the Settings app then click on Time & Language.

Press Windows Key + I to open Settings then click on Time & language

2. Now from the left-hand menu click on Date & time.

3. Now, try setting time and time-zone to automatic. Turn on both the toggle switches. If they are already on then turn them off once and then turn them on again.

Try setting automatic time and time zone | Fix Windows 10 Clock Time Wrong

4. See if the clock displays the correct time.

5. If it doesn’t, turn off the automatic time. Click on the Change button and set the date and time manually.

Click on Change button and set the date and time manually

6. Click on Change to save changes. If your clock still doesn’t show the right time, turn off automatic time zone. Use the drop-down menu to set it manually.

Turn off automatic time zone & set it manually to Fix Windows 10 Clock Time Wrong

7. Check if you’re able to Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Chrome. If not, move on to the following methods.

Method 4: Disable QUIC protocol

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

2. Scroll down and find Experimental QUIC protocol.

Disable Experimental QUIC protocol

3. Next, make sure it’s set to disable.

4. Restart your browser and you may be able to Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Chrome.

Method 5: Clear SSL Certificate Cache

1. Press Windows Key + R then type “inetcpl.cpl” and hit Enter to open Internet Properties.

inetcpl.cpl to open internet properties

2. Switch to the Content tab, then click on Clear SSL state and then click OK.

Clear SSL state chrome

3. Now click Apply followed by OK.

4. Reboot your PC to save changes.

Method 6: Run CCleaner and Malwarebytes

1. Download and install CCleaner.

2. Double-click on the setup.exe to start the installation.

Once download is complete, double-click on the setup.exe file

3. Click on the Install button to start the installation of CCleaner. Follow on-screen instructions to complete the installation.

Click on Install button to install CCleaner

4. Launch the application and from the left-hand side menu, select Custom.

5. Now see if you need to checkmark anything other than the default settings. Once done, click on Analyze.

Launch the application and from the left-hand side menu, select Custom

6. Once the analysis is complete, click on the “Run CCleaner” button.

Once the analysis is complete, click on the Run CCleaner button

7. Let CCleaner run its course and this will clear all cache and cookies on your system.

8. Now, to clean your system further, select the Registry tab, and ensure the following are checked.

To clean your system further, select the Registry tab, and ensure the following are checked

9. Once done, click on the “Scan for Issues” button and allow CCleaner to scan.

10. CCleaner will show the current issues with Windows Registry, simply click on the Fix selected Issues button.

click on Fix selected Issues button | Fix Unable to connect to the proxy server in Windows 10

11. When CCleaner asks “Do you want backup changes to the registry?” select Yes.

12. Once your backup has completed, select Fix All Selected Issues.

13. Reboot your PC to save changes.

If this doesn’t fix the issue then run Malwarebytes and let it scan your system for harmful files. If you have third-party Antivirus or Malware scanners, you can also use them to remove malware programs from your system. You should scan your system with anti-virus software and get rid of any unwanted malware or virus immediately.

Method 7: Miscellaneous Fix

Chrome is updated: Make sure Chrome is updated. Click the Chrome menu button, then Help and select About Google Chrome. Chrome will check for updates and click Relaunch to apply any available updates.

Now make sure Google Chrome is updated if not click on Update

Reset Chrome Browser: Click the Chrome menu, then select Settings, Show advanced settings and under the section “Reset settings,” click Reset settings.

A confirmation box will pop up. Click on Reset settings to continue.

Use Chrome Cleanup Tool: The official Google Chrome Cleanup Tool helps in scanning and removing software that may cause the problem with chrome such as crashes, unusual startup pages or toolbars, unexpected ads you can’t get rid of, or otherwise changing your browsing experience.

Google Chrome Cleanup Tool

The above fixes will definitely help you Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Chrome but if you are still experiencing the error then as a last resort you can reinstall your Chrome Browser.

Method 8: Reinstall Chrome Bowser

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

control panel

2. Click Uninstall a program under Programs.

uninstall a program

3. Find Google Chrome, then right-click on it and select Uninstall.

uninstall google chrome

4. Reboot your PC to save changes and then open Internet Explorer or Microsoft Edge.

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

6. Once the download is complete make sure to run and install the setup.

7. Close everything once the installation is finished and restart your PC.

You may also check:

That’s it you have successfully Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Chrome Error but if you still have any questions regarding this guide then feel free to ask them in the comment’s section.

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