windows 系统1129 - Host 192.168.16.86 is blocked because of many connection errors; unblock with mysqladmin flush-hosts

This message indicates that the IP address 192.168.16.86 has been blocked due to too many connection errors to the MySQL server. To unblock the host, you can use the mysqladmin command to flush the hosts:

1. Open a command prompt or terminal window
2. Type the following command: mysqladmin -u root -p flush-hosts
3. Enter the MySQL root user password when prompted
4. The host should now be unblocked and able to connect to the MySQL server again.