it appears there might be a few reasons why there might be no internet connection for an emulator, in my case i was working from home where i have a wireless connection then came into the office and plugged in direct, however although my wireless connection was disconnected it was not disabled resulting in no emulator connection. my understanding is that when it starts up it looks for a network adapter and if there is any conflict here it might result in no internet connection. to resolve go to Start > Settings > Network Connections right click on Wireless Network Connection (if you are not using wireless) and select disable

我在Win7 64位上遇到了类似的问题。尝试禁用我的hamachi和virtualbox适配器，但没有工作。尝试以管理员身份启动avd，但没有工作。最后，我使用这个网站上的信息禁用了teredo隧道适配器，它工作了: http://www.mydigitallife.info/2007/09/09/how-to-disable-tcpipv6-teredo-tunneling-in-vista/

我没有使用代理……然而，我正在使用一个脚本…在这附近。我在公司的防火墙后面

在Android模拟器中，打开飞机模式，然后再关闭，对我来说很管用。

我解决了这个问题，我禁用了所有的网络连接，除了我正在使用的wifi连接，然后将剩余的启用连接的属性设置为静态分配的DNS地址。(没有DHCP)这是Win7 64bit

当我第一次运行模拟器时，我遇到了这个问题，我通过设置dns服务器来解决

Library/Android/sdk/platform-tools/adb shell getprop net.dns1

获取模拟器10.0.2.3的当前DNS服务器

然后设置它到我的局域网dns服务器

Library/Android/sdk/platform-tools/adb shell setprop net.dns1 192.168.1.1