Can't open the mysql.plugin table. Please run mysql_upgrade to create it
问题 I have downloaded mysql ZIP from here https://dev.mysql.com/downloads/file/?id=467269 Then extracted it, renamed my-default.ini to my.ini , set basedir = D:\Apps\MySQL\mysql-5.7.17-winx64 datadir = D:\Apps\MySQL\data5717 then started mysqld --console under admin privileges. All was described here: http://dev.mysql.com/doc/refman/5.7/en/windows-install-archive.html Unfortunately it prints the following in console: [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it