Change your Windows account password by executing the following command:
prlctl set <Windows UUID> --userpasswd <account_name>:<new_password>
This command may look as follows:
prlctl set 6f05fe58-2ef6-4049-847a-c393f1077658 --userpasswd Appleseed:qwerty
If you see the following output, the password has been changed successfully:
authentication tokens updated successfully.