Are you facing the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error while visiting a website via any browser, including Chrome, Yandex, Firefox, Internet Explorer or Edge, on your Windows 11/10 PC? In most cases, it is not your fault. The error also displays the “This site cannot provide a secure connection” and “A secure connection cannot be established” message. It usually occurs due to a server issue or an issue with an SSL certificate that is rejected by the browser because the certificate has a problem. It is also possible that your PC’s configuration for TSL / SSL is misconfigured. Here we will discuss some tips to solve this error.
Fix: ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Method 1: Check the date and antivirus
The wrong date on the Windows 11/10 PC and antivirus may also be responsible for the error. So check and set the correct date, date and zone. Also, disable the antivirus app temporarily (Make sure the site is not malicious).
Method 2: Access the website using HTTP
Try to access the website using only HTTP; you can add HTTP at the beginning of the URL. Now, if the same problem is not fixed, that means the problem is with the website. If you own that website, you should know these two things:
- You need first to check the website name/domain and alias match the actual URL of the website where the certificate is installed.
- Is your server using RC4 Cipher? If yes, then you need to fix it.
- If you are using CDN, make sure your CDN supports SSL. Nowadays, most CDNs support SSL; however, make sure you have set it up correctly. Otherwise, contact the technical support of your hosting.
Method 3: Enable SSL 3 / TLS and disable QUIC protocol
- Chrome and Yandex browser
Try Disabling the QUIC Protocol method in Chrome or Yandex Browser.
Copy the following address and paste it into the browser address bar chrome://flags#enable-quic.
You will see Experimental QUIC protocol; disable it.
Now restart your browser.
If it doesn’t help, open the Chrome or Yandex browser and, in the address bar, type chrome://flags.
Now write TLS in the search box and turn it on.
In the same search box, write SSL and enable it too.
- Edge and Internet Explorer
Enter Win + R key combination and open Internet properties using inetcpl.cpl line.
Go to the “Advanced” tab and enable “Use TLS 1.1” and “Use TLS 1.2“.
If it did not work, then go back to these options and enable SSL 3.0 more.
- Firefox
In the address bar, type about:config and press Enter.
Now in the search bar, type tls and then find security.tls.version.min.
Double click this option and set the value to 3 to get TLS 1.3 to work.
Now Click “OK” and restart your Firefox browser.
Go back to the hidden options, and then enter SSL3 in the search (You should have the values true if not, change them)
Restart your browser on your Windows 11/10 PC.
Method 4. Remove SSL State
Type the Win + R shortcut key to open the Run dialog.
Enter inetcpl.cpl to open Internet properties.
Head over to the “Content” tab and click on Clear SLL.
Now check whether the problem ERR_SSL_VERSION_OR_CIPHER_MISMATCH is solved or not.
