Yes, if you forget your Plesk password on your Windows server, you can use the plesksrvclient.exe utility located in "adminbin" folder of your Plesk installation directory to recover your Plesk password.
To Run the plesksrvclient.exe Program on Your Dedicated Server
1. Connect to your Windows dedicated server using Remote Desktop Connection.
2. From the Start menu, select Run.
3. In the Run dialog, type:
"C:\Program Files\Parallels\Plesk\admin\bin\plesksrvclient.exe" -get