ERROR 1396 (HY000): Operation ALTER USER failed for ‘root‘@‘localhost‘

mysql连数据库的时候报错:

1251 client does not support authentication protocol requested by server;consider upgrading Mysql client

ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'localhost'

先登录mysql

mysql -u root -p

输入密码

mysql> use mysql;

mysql> select user,host from user;

1. +------------------+-----------+

2. | user | host |

3. +------------------+-----------+

4. | root | % |

5. | admin | localhost |

6. | mysql.infoschema | localhost |

7. | mysql.session | localhost |

8. | mysql.sys | localhost |

9. | zhangj | localhost |

10. +------------------+-----------+

注意我的 root，host是'%'

你可能执行的是:

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';

改成:

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123';

---

如果还是不行：

重置密码为空

先登录MySQL，重置密码为空，并刷新

1. update user set authentication_string='' where user='root';

2. flush privileges;

再用上面的方法修改密码