Vagrant The version of powershell currently installed on this host is less than the required问题解决

        Vagrant failed to initialize at a very early stage:

        The version of powershell currently installed on this host is less than the required minimum version. Please upgrade the installed version of powershell to the minimum required version and run the command again.

        Installed version: N/A
        Minimum required version: 3

1、windows 7系统安装了Vagrant，但是在cmd窗口，执行vagrant命令报错。

解决办法：

        更换成Windows 10系统，因为Vagrant不是很支持Windows 7系统。