ER_NOT_SUPPORTED_AUTH_MODE

ER_NOT_SUPPORTED_AUTH_MODE is a MySQL error code that indicates the attempt to connect to a database using an unsupported authentication mode. This error occurs when the authentication mode specified in the client does not match the authentication mode defined on the server.

Causes

There are several possible causes for this error, including:

• The authentication mode specified in the client is not supported by the MySQL server.
• The MySQL server is configured to use a different authentication mode than what the client is expecting.
• The client is using an outdated version of the connector, which does not support the authentication mode used by the server.

Solutions

To resolve this error, you can try one or more of the following solutions:

1. Upgrade the MySQL connector to a more recent version that supports the authentication mode used by the server.
2. Change the authentication mode on the server to match the authentication mode used by the client.
3. Use a different authentication mode in the client that is supported by the MySQL server.
4. Check the server logs for any errors related to the authentication process.

Conclusion

ER_NOT_SUPPORTED_AUTH_MODE is an error that occurs when the client and server are using conflicting authentication modes. There are several possible causes and solutions to this error, so it's important to evaluate each situation individually to determine the best course of action. Upgrading the MySQL connector, changing the authentication mode on the server, using a different authentication mode in the client, or checking server logs for errors can all help resolve this issue.