Unable to install Plesk via Web Installer: handshake failed: ssh: unable to authenticate, attempted methods [none password], no supported methods remain

Symptoms

• Unable to install Plesk through Web Installer:

  Cannot connect to ssh host example.com: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none password], no supported methods remain

• Root/Password authentication is chosen.

Cause

Specified credentials (username/password) are not correct.

Resolution

Confirm with hosting provider/cloud vendor the correct credentials and use them at Web Installer.

Additional Information

Installation of Plesk via Plesk Web Installer fails: Could not connect to the target server. Process exited with status 1