How to retrive plesk admin password

Apart from the password reminder available on the login screen, you can use theplesksrvclient.exe utility located in the %plesk_bin% folder to set up a new password or retrieve the old one.
You can set up a new password by running the following command:

"%plesk_bin%\plesksrvclient" -set <new_password> true

You can also retrieve the current password by running this utility with:

"%plesk_bin%\plesksrvclient" -get

To retrieve the password in the command line, you can use -nogui option:

"%plesk_bin%\plesksrvclient" -get  -nogui > plesk_password.txt

After that, you can find the retrieved Plesk password in the plesk_password.txt file.