How to Fix \'Authentication with old password no longer supported\' Error in MySQL Connector 6.6.5?

MySQL Authentication Error: "Authentication with old password no longer supported"

When attempting to connect to a MySQL database using C# and MySQL Connector 6.6.5, the error message "Authentication with old password no longer supported, use 4.1 style password" may be encountered. This error indicates that the password used is not in the newer 4.1 format.

To resolve this issue, follow the steps outlined below:

1. Ensure Your Password is in the 4.1 Format:

• Contact your hosting provider to confirm that your my.cnf file is configured to use 4.1 style passwords.
• If not, have your hosting provider make the necessary changes to the my.cnf file.

2. Reset Your MySQL Password:

• Use a database management tool like MySQL Workbench to connect to your database.

• Execute the following commands:

  • SET SESSION old_passwords=0;
  • SET PASSWORD FOR =PASSWORD('');
• Replace with your MySQL username and with your desired password.

3. Update Your C# Code:

• Use the following connection string format to connect to your MySQL database:

  • "server=;user=;database=;port=<3306>;password=;"
• Replace , , , <3306>, and with the appropriate values.

By following these steps, you should be able to successfully connect to your MySQL database using C# and MySQL Connector 6.6.5 with the newer 4.1 style password format.

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