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HTTPS broken after upgrade to 15.3.1 (from 15.3.0)

I have Snap and upgrade our FTP server yesterday from 15.3.0 to 15.3.1

now https is no more working.

This site can’t provide a secure connection uses an unsupported protocol.

view certificate is fine and valid.
any idea ?
Parents Reply
  • Odd, not seen certificates tied to TLS versions. I wonder if duing the upgrade it lost the private key to the certificate? Not used the Serv-U software so just guessing. When you got it re-issued did you generate a new CSR from the server and send this to the supplier?