Timed out waiting for authentication provider to register
是github身份验证被禁用了
打开文件-->首选项-->配置文件(默认)--显示配置内容
启用之后重新登录就好(不可以的话重启vscode试试)
显示右下角图标表示激活成功
参考原文:GitHub Copilot could not connect to server. Extension activation failed: "Timed out waiting for authentication provider to register" · community · Discussion #11324 · GitHub