Unable to access Plesk via https://example.com:8443: This site can’t be reached

Applicable to:

Unable to access Plesk via https://example.com:8443 with the error:

PLESK_INFO: This site can’t be reached
In Plesk > Tools & Settings > Server settings the Full hostname* is specified as example.com.
There is no A record for the domain in the global DNS system:

# dig +short example.com
#

The domain DNS misconfiguration.

Contact the domain registrar company (where the domain name that is not working was purchased from) regarding the issue.

As workaround use one of the following methods:

Access Plesk using the server IP-Address, for example http://203.0.113.2:8443.
Change the server name, so it will use one of the working domain names.