安裝mysql8.0後使用navicat創建連接, 然後報如題所示警告.可參考如下解決方案:

https://stackoverflow.com/questions/49194719/authentication-plugin-caching-sha2-password-cannot-be-loaded

8.0改變了身份驗證插件，改成使用老版本的身份驗證插件方式就好了。

我的操作步驟:

1.修改C:\ProgramData\MySQL\MySQL Server 8.0\my.ini文件中,caching_sha2_password改為mysql_native_password

#default_authentication_plugin=caching_sha2_password
default_authentication_plugin=mysql_native_password
 

2.修改mysql密碼, 重啟mysql服務就ok了.

cd "C:\Program Files\MySQL\MySQL Server 8.0\bin"

C:\Program Files\MySQL\MySQL Server 8.0\bin> mysql -u root -p
Enter password: *********

mysql> ALTER USER ‘root‘@‘localhost‘ IDENTIFIED WITH mysql_native_password BY ‘newrootpassword‘;
Query OK, 0 rows affected (0.10 sec)

mysql> exit
 

========================================我是分割線==========================================

感謝:

1.https://www.cnblogs.com/zzqc/p/9192217.html

2.https://blog.csdn.net/zixiao217/article/details/80156362　

mysql8.0 Authentication plugin 'caching_sha2_password' cannot be loaded