有些使用win7的用户在打开Wancheng VPN for China时，会遇到以下错误提示：
造成此问题的原因是系统中缺少 api-ms-win-crt-runtime-l1-1-0.dll 文件。
请访问以下链接下载所需文件，解压缩后安装里面的程序，最后重启计算机即可。
点击下载：Windows6.1-KB2999226-x64.msu
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