1251- Client does not support authentication protocol requested by server;consider upgrading Mysql client。

引用中提到的错误是"1251- Client does not support authentication protocol requested by server; consider upgrading MySQL client." 这个错误通常是由于MySQL客户端不支持服务器请求的身份验证协议而导致的。根据的解释，这个错误可以通过将MySQL用户的身份验证规则更改为mysql_native_password来解决。

方法一：
1. 在Navicat Premium 12中打开连接的属性设置。
2. 找到"高级"选项卡，并在"身份验证插件"下拉菜单中选择"mysql_native_password"。
3. 保存设置并重新连接MySQL，应该可以成功登录了。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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