Navicat error: 1045-Access denied for user [email protected](using 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 leave a comment below or send me a private message, thank you very much!???

Let me introduce myself first. The editor graduated from Shanghai Jiaotong University in 2013. I worked in a small company and went to big factories such as Huawei and OPPO. I joined Alibaba in 2018, until now.I know that most junior and intermediate java engineers want to upgrade their skills, they often need to explore their own growth or sign up to study, but for training institutions, the tuition fee is nearly 10,000 yuan, which is really stressful.Self-learning that is not systematic is very inefficient and lengthy, and it is easy to hit the ceiling and the technology stops.Therefore, I collected a "full set of learning materials for java development" for everyone. The original intention is also very simple. I hope to help friends who want to learn by themselves but don't know where to start, and at the same time reduce everyone's burden.Add the business card below to get a full set of learning materials