
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.
