有些win7版的用户打开SkyBlue VPN for China时，系统会出现如下错误提示：
这是因为系统缺少 api-ms-win-crt-runtime-l1-1-0.dll 这个文件造成的。请下载以下文件，解压后安装里面的程序，然后重启计算机即可。
点击下载：Windows6.1-KB2999226-x64.msu
- One SkyBlue VPN for China account for all devices.
- SkyBlue VPN for China offers multiple plan choices: from 1-week to 1-year.
- Timely SkyBlue VPN for China customer service.
- Free time each day!
- 30-day money-back guarantee.