Why Can\'t I Connect to MySQL 4.1 with Legacy Authentication?

Unable to Establish Connection to MySQL 4.1 with Legacy Authentication

When attempting to connect to a MySQL database hosted at bluesql.net, you may encounter an error indicating an inability to establish a connection using the outdated authentication mechanism employed in MySQL versions prior to 4.1. This issue stems from the implementation of newer authentication methods in subsequent MySQL releases, while older password schemes may still persist, potentially hindering compatibility with certain applications.

In your case, you are utilizing PHP 5.3 and the mySQLi extension (new mysqli(...)) to connect to the database. To address this issue without resorting to downgrading your PHP version, you should consider the following steps:

Verifying Old Password Schema Usage

Determine whether the MySQL server you are attempting to access is configured to utilize the old password schema by executing the following SQL query:

SHOW VARIABLES LIKE 'old_passwords'

If the result of the query displays "old_passwords,Off," it indicates that the server is configured to use the old password schema.

Identifying Accounts with Old Passwords

Examine the mysql.user table to identify user accounts that still employ old passwords. Execute the following query:

SELECT `User`, `Host`, Length(`Password`) FROM mysql.user

Accounts with old passwords will have a password length of "16," while accounts with new passwords will have a length of "41."

Setting New Passwords for Affected Accounts

For each account identified with an old password, set a new password using the following command:

SET PASSWORD FOR 'User'@'Host'=PASSWORD('yourpassword');
FLUSH Privileges;

Replace "User" and "Host" with the values obtained from the previous query.

Verifying Password Update

Recheck the password length for the updated account. It should now display "41," indicating that the new password schema is being utilized.

By adhering to these steps, you can successfully overcome the authentication compatibility issue and establish a connection to the MySQL database at bluesql.net.

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