Navicat报错:1045 -拒绝访问用户[email protected](使用passwordYES)

Foreword:

The thing is like this, yesterday I was debugging an oython project given by my mentor. This project has no documentation, so I need to match and create the database information myself, so I connected this project to my local database., to debug. After I connected to the database, I ran the Flask project, but the database could no longer be opened, and an error was displayed:
1045-Access denied for user [email protected](using password:YES).In order to let friends who encounter the same problem avoid this pit, I will record the process of solving it.

Body:

Anyone who encounters this problem on the terminal has a high probability of forgetting the password, but when Navicat cannot open the database, there is a high probability that something went wrong, and I don't know the details, so I solved it like this:

First open the terminal as administrator, then open the database:

Then enter the command: mysql -u root -p

Type your password again.Then enter a command to change your current password:

Ps: This place must be tried!!!At first, I didn’t believe that changing the password would be enough. I felt that this problem should be solved from the root cause, but it turns out that changing the password is really effective. I can log in with Navicat after changing the password.

The command to change the password in versions before mysql8.0:
update mysql.user set authentication_string=password("new password") where user="root";

The command to change the password in versions after mysql8.0:
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'new password'

How to see what version of mysql is, you can check it from Navicat:

Of course, if the command according to the corresponding version does not work, try another command.

After entering the command, exit mysql and log in with the new password once:

If it doesn't work, you need to look at other bloggers' articles, because this error is really sudden, and the solution is also very sudden...

Summary:

When encountering this kind of problem, you can start with the simplest way to change the password. If changing the database password can't solve it, go to find a further method, at least one possibility is ruled out.If you have a better solution, please comment below or send me a private message, thank you very much!???

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