Resolved SSL not working - Let's Encrypt

[brekelmansk]

Since yesterday we have made a switch from cPanel to Plesk Onyx.

After setting Let's Encrypt everything worked properly. Until this afternoon, the safe connection is no longer working.

When I go to my.hostname.com:8443 the SSL does not work at all and I see an error code in Chrome: ERR_SSL_PROTOCOL_ERROR. Details attached in the screenshot below.

However, when I check the certificate details, the status is "This certificate is okay".


I'm hoping someone can point me in the right direction.

 

[brekelmansk]

Problem is fixed.

Settings in Plesk.conf was:

server {
                listen 8443;
                listen 8880;
                listen 127.0.0.1:8880 default_server;
                include cont.d/*ipv6_ports.inc;

We change this in:

server {
                listen 8443 ssl;
                listen 8880;
                listen 127.0.0.1:8880 default_server;
                include cont.d/*ipv6_ports.inc;