Plesk Control Panel
Retrieve Plesk ‘admin’ Password on Windows
If you have forgotten access to your Plesk Control Panel and have physical or remote desktop access to your Windows server here’s how.
From the command prompt browse to you Plesk installation directory i.e. C:\Parallels\Plesk or C:\SWSoft\Plesk then issue the command:
admin\bin\plesksrvclient.exe -get
A popup should appear listing your password.