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+---
+title: 505 HTTP Version Not Supported
+slug: Web/HTTP/Status/505
+tags:
+  - 响应状态码
+  - 服务器端错误
+translation_of: Web/HTTP/Status/505
+---
+<div>{{HTTPSidebar}}</div>
+
+<p><code><strong>505</strong></code><strong><code> HTTP Version Not Supported</code></strong> 是一种HTTP协议的服务器端错误状态代码，表示服务器不支持请求所使用的 HTTP 版本。</p>
+
+<h2 id="状态">状态</h2>
+
+<pre class="syntaxbox">505 HTTP Version Not Supported</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Title</th>
+  </tr>
+  <tr>
+   <td>{{RFC("7231", "505 HTTP Version Not Supported" , "6.6.6")}}</td>
+   <td>Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="相关内容">相关内容</h2>
+
+<ul>
+ <li>{{HTTPHeader("Upgrade")}}</li>
+</ul>