win10 mysql8.0 Navicat installation and connection problems

Pro test is effective:

ERROR 1045 (28000): Access denied for user 'ODBC'@'localhost' (using password: NO) 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using passwor: YES)
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using passwor: NO)

First C:\Program Files\MySQL\MySQL Server 8.0look in the directory to see if there is one my.ini.
If so, follow the first step below, if not.
my.iniThe file should be under the C:\ProgramData\MySQL\MySQL Server 8.0path. After copying it to the above path, follow the first step.
Remember to restart the mysql service after the update.
win+SSearch for services, find MYSQL and MYSQL80, and restart them.
https://blog.csdn.net/dream_miracle/article/details/82663652

After it can be used locally, and then use Navicat to visualize the database, there will be problems with the first connection:

Can't connect to MySQL server on 'xxx.xxx.xxx.xxx' （10061）

If this problem also occurs in the first link above, the following methods can also be used to solve it.
https://blog.csdn.net/wen_3370/article/details/72821443

Use Navicat for Mysql to connect to the server MySql.
question:

2013-Lost connection to MYSQL server at 'reading for initial communication packet',system error：0

1. Make sure the server closes the firewall firewalld.service
2. Check whether the Mysql remote login account is enabled
3. Use ss -tlnpto see if the current port is open
4. The port number can be found in the mysql directory my.cnf, mine is not 3306, so I made an oolong. and add modifications. For specific operations, see:
   https://blog.csdn.net/qq_16885135/article/details/53096451
   is great!
   https://blog.csdn.net/Homewm/article/details/81316852
   This article mentioned that when Navicat connects to the database, the username and password are 常规连接different from those SSHwhen connecting.