Navicat Premium 连接MySQL数据库出现Authentication plugin 'caching_sha2_password' cannot be loaded的解决方案

1、运行cmd，目录定位到MySql的安装目录“C:Program FilesMySQLMySQL Server 8.0in”

2、运行mysql

mysql -u root -p

3、运行如下的两个命令

ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER; 
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password'; 

4、运行如下指令刷新密码，并更新密码

FLUSH PRIVILEGES; 
alter user 'root'@'localhost' identified by '新密码';

5、再次连接就可以了