(1 votes, average: 5.00 out of 5)
Have you encountered the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error while working on a browser? If affirmative, you must know how frustrating and troublesome it can be. Therefore, this article will explore – “How to fix the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error?
But before we dive deeper and explore different methods to resolve the issue, it would be better to know – what precisely this error is & why it occurs.
In a browser, the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error appears due to a lack of “common SSL protocol version or cipher suite support” between a web server and a user’s browser. This issue happens during the TLS handshake process. With that, the browser will automatically display this specific error message.
Apart from the mismatch between TLS versions or cipher suites, the ERR_SSL_VERSION_OR_CIPHER_MISMATC error can occur due to “n” a number of other reasons. Here are some of those:
Here are the methods that you can use to fix the issue:
Start by examining the website’s SSL certificate. An outdated or invalid certificate often leads to this error. Tools like Qualys SSL Labs can help check your site’s SSL status. This tool grades the SSL connection and detects mismatches or outdated certificates. Simply enter your site’s URL into Qualys SSL Labs for a comprehensive analysis.
Follow the straightforward steps mentioned below to accomplish the same:
Older versions might not support newer SSL protocols and lead to mismatches. These mismatches ultimately lead to the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. Therefore, regularly update your browser and the operating system that you utilize. Follow the steps mentioned below to update your browser and OS:
Steps to update your browser:
Steps to update your OS:
Cached data might contain outdated security configurations. These outdated security configurations can give rise to many SSL-related errors, along with the one in the discussion. Follow the steps mentioned below to clear the browser cache:
Incorrect settings or the software’s certificates often flag safe sites as risky. To test if it’s the cause behind getting the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error, follow the steps given below to turn off Windows antivirus software. Once done, retry reaccessing the website.
Follow the steps given below to disable Windows antivirus software:
Enabling TLS 1.3 in your browser can fix the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. TLS 1.3 is the latest TLS version, that offers – enhanced security and performance. Follow the steps mentioned below to enable it:
Misconfigurations with Cloudflare’s SSL settings can lead to the error in discussion. Check Cloudflare’s dashboard for any SSL-related settings and make necessary adjustments, if needed.
Follow the steps mentioned below to adjust Cloudflare’s SSL settings if Universal SSL is installed from Cloudflare:
The QUIC protocol, though efficient compared to – TLS, TCP, HTTP/2, etc., can sometimes cause ERR_SSL_VERSION_OR_CIPHER_MISMATCH and other SSL-related errors. So, it’s best to disable it. Follow the steps mentioned below to turn off QUIC protocol:
Tackling the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error is straightforward. Regularly update your browser and OS. Always check and clear your browser cache. Temporarily disable antivirus software if needed. Enable TLS 1.3 for enhanced security. Adjust Cloudflare’s SSL settings carefully. Lastly, consider disabling the – QUIC protocol.