MySqlException: Unable to Connect to any of specified MySQL hosts

Question

I am using default port (3306) of mySQL

and my connecting string is like

Server=184.27.45.87;Database=xxxxx;Uid=xxxxx;Pwd=yyyyy

Still I am getting error at line

con.Open()

getting exception

MySqlException: Unable to Connect to any of specified MySQL hosts

stack trace

A first chance exception of type 'System.Threading.ThreadAbortException' oc7curred in mscorlib.dll

An exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll but was not handled in user code

The thread 0x1944 has exited with code 0 (0x0).

A first chance exception of type 'MySql.Data.MySqlClient.MySqlException' occurred in MySql.Data.DLL

Answer 1

Note that you should use uid instead of User ID of the SQL query string is as follows:

server=$servername$;database=$databasename$;uid=$username$;password=$password$;

Where $servername$ is the name of the machine where your MySQL Server is running (localhost if it's on your own machine) and $databasename$ the name of your database (or catalog, as some call it), $username$ a user which is allowed to access the database you selected and $password$ the password of the user.

Example:

    //create a MySQL connection with a query string
    MySqlConnection connection = new MySqlConnection("server=localhost;database=cs;uid=root;password=abcdaaa");

    //open the connection
    connection.Open();

    //close the connection
    connection.Close();

Answer 2

I had a similar issue. My MySQL server was on a remote machine and by default it does not accept remote connections. I had to explictly add my machine's IP address to its list of accepted IPs.

Answer 3

I had the similar issue when MySqlConnector trying to connecting using IPV6. Same error. You need to update your driver.