In the installation win10 preview version 9879 when the card is in progress 18% solution

The current test Win10 installation card is at 18%. The most effective solution is to disconnect the computer network connection, which may be related to Microsoft's network authentication mechanism. Believe that "broken network Dafa" is not stranger to the old Windows Phone 7 users. Windows Phone 7 update needs to connect to the Zune player kit. When the official push does not check for updates, you can check the update package within 7 or 8 seconds.
For Win10/Win8.1 installation, there is no such trouble. When the 18% period has been completed, you can unplug the network cable or disable the network adapter to disconnect the network, and you can successfully complete the installation.