Plesk AdminPanel ERR_CONNECTION_RESET

If your Plesk AdminPanel is refused the connection  it may be due to an unsecure/outdated certificate.

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Try to create e new self-signed certificate to get back your AdminPanel:

Rename the old certificate

# cd /usr/local/psa/admin/conf/
# mv httpsd.pem{,.old}

Create a new self signed certificate

# openssl req -new -nodes -x509 -out httpsd.pem -newkey rsa:2048 -keyout httpsd.pem -days 3650

Restart the Service

# service sw-cp-server restart

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