MySql Connector Upgrade Troubleshooting: Authentication with 4.1-Style Passwords
In trying to access a MySQL database from a C# application, you may encounter the error "Authentication with old password no longer supported, use 4.1 style password." This error arises due to a change in MySQL's password authentication mechanism.
Solution Implementation
You have attempted the recommended solution of setting the old_passwords session variable to 0 and updating the user's password. However, you encountered an "Access denied for user@host" error. This suggests that there may be an additional issue preventing the password update.
Hosting Configuration
Your hosting provider has modified the my.cnf configuration file to enable the use of 4.1-style passwords. This allows you to successfully connect using the mysql command-line tool.
Connector Issue
Despite the server-side changes, you continue to face this error when connecting with MySQL Connector 6.6.5 in your C# code. This indicates an incompatibility between the connector and the updated password authentication mechanism.
Alternative Solution
An alternative solution that has been found effective for this particular issue is:
Run the following commands:
Use the updated password when connecting from your C# code using the following connection string format:
By following these steps, you should be able to successfully connect to your database and authenticate with the 4.1-style password.
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