更改下载区节点。
安装DX9.0C。
1、选择下载地区，一般选择离自己比较近的服务器，（一般情况steam会自动选择最近的服务器，但有时候最近的服务器稳定性不好，或者在维护，就会下载不了，只能自己手动设置），如图所示；
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2、又在下面点击清除下载缓存，（官方的解释是：清除下载缓存可能能够解决下载或者启动应用时的问题），就按照官方的解释操作，如图所示。
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3、另外，下载限制设置，以默认设置为准，最好不要变动，如图所示：
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4、找到游戏文件里的DX和VC文件夹进行DX和VC文件重新安装如同。
下载DX修复工具和游戏必要组件进行重新安装。
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