I have downloaded mysql ZIP from here https://dev.mysql.com/downloads/file/?id=467269
Then extracted it, renamed
basedir = D:\Apps\MySQL\mysql-5.7.17-winx64
datadir = D:\Apps\MySQL\data5717
[ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to
You probably misunderstood/skipped point 4 in your list, Initialize MySQL. It means to either copy an existing data directory there or to create a new one, see Initializing the Data Directory Manually Using mysqld .
To initialize a fresh data directory, you basically (after setting your config file) just have to run either
The latter will set an empty root password.