However, in our case, the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error actually prevented us from being able to check it in Chrome DevTools. Remember though, there are wildcard certificates and other variations, but for a typical site, it should match exactly. If this doesn’t match the current site you’re on, this is a problem. Right-click anywhere on the website and click on “Inspect.” Then click on the security tab and click on “View certificate.” The issued domain will show in the certificate information. The domain name alias is for a website whose name is different, but the alias was not included in the certificate.Īnother easy way to check the current domain name issue on the certificate is to open up Chrome DevTools on the site.The site uses a content delivery network (CDN) that doesn’t support SSL.
The site no longer exists, yet the domain still points to the old IP address, where some other site is now hosted.The site does not use SSL, but shares an IP address with some other site that does.As SSL Labs states, a mismatch can be a number of things such as: As you can see from the SSL Labs test below, this is pretty quick and easy to diagnose. In this particular instance, the customer migrating to Kinsta had a certificate name mismatch which was throwing up the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error.
Check SSL certificate Check for Certificate Name Mismatch
It could take a minute or two to scan your site’s SSL/TLS configuration on your web server. You can also select the option to hide public results if you prefer. It is very reliable and we use it for all Kinsta clients when verifying certificates. Simply input your domain into the Hostname field and click on “Submit.” Check Out Our Video Guide to Fixing SSL Errors If you see this error, the first and easiest place to start is to perform an SSL check on the certificate that is installed on the site. We recommend using the free SSL check tool from Qualys SSL Labs. The client and server don’t support a common SSL protocol version or cipher suiteĬheck out reasons below on why this happens and what you can do about it.Error 113 (net::err_ssl_version_or_cipher_mismatch): unknown error.Optimize your admin tasks and budget with $275+ enterprise-level features included free in all WordPress plans.
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