Unable to connect to any of the specified MySQL hosts when checking connection

Question

I am trying to connect to Mysql database through vb.net However I run into the error:

Unable to connect to any of the specified MySQL hosts

Here is the code:

    Imports MySql.Data.MySqlClient
Public Class DBProject_1
    Dim MysqlConn As MySqlConnection

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    MysqlConn = New MySqlConnection
    MysqlConn.ConnectionString = "server=localhost;userid=root;password=root;database=My_Mysql_Database"
    Try
        MysqlConn.Open()
        MessageBox.Show("Connection Successful")
        MysqlConn.Close()
    Catch ex As Exception
        MessageBox.Show(ex.Message)
    Finally
        MysqlConn.Dispose()

    End Try
End Sub
End Class

I have even tried to use

MysqlConn.ConnectionString = "server=**127.0.0.1**;userid=root;password=root;database=My_Mysql_Database"

This may be the reason: When I test connection of the Mysql database in Mysql Workbench the test fails. The error is Failed to Connect to Mysql at 127.0.0.1:3306 with user root

Answer 1

Try with this ConnectionString:

 MysqlConn.ConnectionString = "Server=localhost;Database=My_Mysql_Database;Uid=root;Pwd=root;"

Answer 2

The "Can't connect to MySQL server" error usually is the result of not being able to reach the server, e.g. if it is not running or it is on a remote machine but firewalls block access. See also the video I added to the MySQL channel for how to set up connections.

Answer 3

Please check that MySql Service is running by typing "services.msc" in the "run". I hope it will help you!

Answer 4

I have the same problem. But I was a server, in a domain, and now the server is outside the domain.

I try to change the rulesin firewall of the server (where there is MySql server). So go to inbound rules, and search the 2 Mysql rules.

Open them and search th Advanced item. Then check Domain, or/and Private, or/and Public

(for me, Domain was the only cheked option, not good for me because I 'm now outside the domain).

Hope it helps ! Cheers :)