MySQL password can not login problem

For a variety of reasons, I have been a Windows-based platform for development, and I used to reload different versions of MySQL database when I was a beginner. Therefore, after a long period of non-use, there are some conflicting issues.

Simply described below, today using the previous program to operate the database with this error:

At first I thought it was a wrong password, but soon I found Workbench was not connected. So I think it should not be a simple password error.

Subsequently, I found that I failed to run the mysql57 service, and I guess it might be that the MySQL service that was installed before the run caused the

So I tried to shut down the MySQL service (this is the name of the service I specified before installation) and started the mysql57 service again, and the problem was solved.

Then I log in to the database and finally log in successfully.

Summary: Different versions of MySQL must be uninstalled before installation, in addition, you can also let the name of the service to cover the previous service.

MySQL password can not login problem