Winrar:The archive is either in unknown format or damaged

Winrar打开一个文件失败，提示：The archive is either in unknown format or damaged



此外还提示说：

E:\BaiduNetdiskDownload\教程.rar: Unsupported archive format. Please update WinRAR to a newer version.
E:\BaiduNetdiskDownload\教程.rar: The archive is either in unknown format or damaged

Winrar版本太低的原因？检查了下，当前版本为4.2，很早的版本了，官网下载最新版安装，问题解决。