client does not support authentication protocol requested by server;consider upgrading mysql client

Mysql8.0使用低版本Navicat Premium报这个错，应为加密方式不一样了，我们需要需改加密的方式

到mysql的bin文件下Shift + 鼠标右键选择==运行程序窗口== 输入命令
mysql -u root -p

mysql>ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '你的密码';
mysql>FLUSH PRIVILEGES;
mysql>quit

就可以了在连接Navicat Premium