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You are at the right place to find a solution receiving ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. You are not alone as thousands of webmasters and website visitors face that common issue daily. There are multiple variations of that error like "Error 113 (net::err_ssl_version_or_cipher_mismatch): unknown error OR "The client and server don’t support a common SSL protocol version or cipher suite
Even advanced webmasters may receive this error if they never met it before. The depreciation of the RC4 cipher is mainly the reason of the error. The Chrome browser trying to prevent visitors and users to be in a danger due to insecure RC4 cipher.
Our security experts prepared multiple working solutions solving ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. We hope you will find the one working for you.
We highly suggest starting checking your SSL/TLS certificate using the most professional SSL test tool by SSL Labs. You will receive multiple error messages if your certificate is broken or old. It is possible to hide results from the public by checking "Do not show the results on the boards". It takes around two minutes to scan your web server. Start by entering your domain name in "hostname" field and click "Submit".
The checking process starts with Certificate name mismatch as one of the most common reasons to get the problem. SSL Test would show you the possible reasons helping you to diagnose the source of error.
The old TLS version running on your web hosting server is a possible reason for getting problems. We suggest running at least TLS 1.2 or even TLS 1.3 version. Again, SSL Lab's checker would easily determinate what versions are in use on the server. Make sure to keep server up-to-date always.
Google documentation states that error ERR_SSL_VERSION_OR_CIPHER_MISMATCH would appear as Chrome removed RC4 cipher suite starting at version 48. Microsoft and Google security engineers highly suggests disabling RC4 for best security practices. With SSL test you can find out all cipher and versions are currently in use on your server.
There are things you can do if you faced ERR_SSL_VERSION_OR_CIPHER_MISMATCH while surfing the Internet. In most cases using SSL Labs will be enough to find out what is wrong with your server configuration for a quick update.
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