部分win7用户在打开Songshu VPN for China时，系统可能会出现以下错误提示：
这是由于系统缺少 api-ms-win-crt-runtime-l1-1-0.dll 文件所造成的，
请下载以下文件，解压后安装其中的程序，然后重启电脑即可。
点击下载：Windows6.1-KB2999226-x64.msu
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