<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:media="http://search.yahoo.com/mrss/"><channel><title>GitHub Copilot on もふもふのブログ</title><link>https://mome-n.com/tags/github-copilot/</link><description>Recent content in GitHub Copilot on もふもふのブログ</description><generator>Hugo -- gohugo.io</generator><language>ja</language><copyright>&amp;copy;{year} もふもふのブログ</copyright><lastBuildDate>Mon, 05 Jan 2026 23:00:00 +0900</lastBuildDate><atom:link href="https://mome-n.com/tags/github-copilot/index.xml" rel="self" type="application/rss+xml"/><item><title>VS Code Copilot Chatで「Requested model not available for session」(400) が出た時の対処法</title><link>https://mome-n.com/posts/vscode-copilot-requested-model-not-available-for-session/</link><pubDate>Mon, 05 Jan 2026 23:00:00 +0900</pubDate><atom:modified>Wed, 07 Jan 2026 23:36:43 +0900</atom:modified><guid>https://mome-n.com/posts/vscode-copilot-requested-model-not-available-for-session/</guid><description>&lt;div class="heading-container"&gt;
&lt;h2 id="まえがき"&gt;
&lt;span class="heading-text"&gt;まえがき&lt;/span&gt;
&lt;/h2&gt;
&lt;/div&gt;
&lt;p&gt;VS Code の Copilot Chat で、次のようなエラーが出て要求が失敗することがあります。&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;申し訳ございません。要求に失敗しました。もう一度お試しください。&lt;br&gt;
Copilot 要求 ID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx&lt;br&gt;
GH 要求 ID: xxxx:xxxxxx:xxxxxx:xxxxxx:xxxxxxxx&lt;br&gt;
理由: Request Failed: 400 {&amp;ldquo;error&amp;rdquo;:{&amp;ldquo;message&amp;rdquo;:&amp;ldquo;Requested model not available for session&amp;rdquo;,&amp;ldquo;code&amp;rdquo;:&amp;quot;&amp;quot;}}&lt;/p&gt;</description><dc:creator>もふもふ</dc:creator><media:content url="https://mome-n.com/images/content-eye-catch/756c186cb02bd781.png" medium="image"><media:title type="html">meta image</media:title></media:content><category>GitHub Copilot</category><category>VSCode</category></item></channel></rss>