# Error 1251: Client does not support authentication protocol requested by server

| Error Code | SQLSTATE | Error                          | Description                                                                                            |
| ---------- | -------- | ------------------------------ | ------------------------------------------------------------------------------------------------------ |
| 1251       | 08004    | ER\_NOT\_SUPPORTED\_AUTH\_MODE | Client does not support authentication protocol requested by server; consider upgrading MariaDB client |

## Possible Causes and Solutions

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