You might also see a variation of the error, such as: Chrome is actually protecting you by not letting you load it. We were, of course, running the latest version of Chrome, so the issue was with their SSL certificate. In fact, we just recently encountered a user having this issue on their WordPress site who was migrating to Kinsta from another host. The ERR_SSL_VERSION_OR_CIPHER_MISMATCH error typically happens on older operating systems or browsers.īut that is not always the case. What Causes the ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error? If for some reason the browser doesn’t like what it sees, such as a misconfiguration or unsupported version, your browser might display the following error: “ERR_SSL_VERSION_OR_CIPHER_MISMATCH” which prevents you from accessing the site.Ĭheck out a few recommendations on how to fix this error. What Is the ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error? Some of these include the TLS handshake, the certificate being checked against the certificate authority, and decryption of the certificate. When you visit a website running over HTTPS a series of steps are performed between the browser and the web server to ensure the certificate and SSL/TLS connection is valid.

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