If this connection fails, Android will consider that there is no Internet connectivity.
To fix this, unset your proxy and reboot the device.
Unset your proxy before stopping the device to avoid this problem in the future.
For more information about Genymotion and proxies, refer to How to connect a virtual device to a proxy?
Quick boot problem
You are using quick boot (Genymotion Desktop - QEMU only).
This bug can occur after a quick boot.
Try launching the device with a cold boot instead.
See Genymotion Desktop online documentation.
China-specific network behavior
You are in China.
If you are in China, Wifi will probably be disabled when you start the device.
Genymotion devices try to connect to google.com at boot to verify the Internet connection.
Due to restrictions in China, this test fails and the device thinks that Internet is not connected.
Genymotion Desktop offers two approaches to solve this problem: use a VPN on the host computer and connect to a non-Chinese network, or apply the following method.
The following ADB commands override the captive portal URLs and NTP server.
Open a terminal and run the following ADB commands:
adb shell settings put global captive_portal_http_url https://www.google.cn/generate_204
adb shell settings put global captive_portal_https_url https://www.google.cn/generate_204
adb shell settings put global ntp_server 1.hk.pool.ntp.org
Reboot the device.
Wifi should then be available.
Genymotion Device Image on Alibaba in the Chinese Zone
The problem occurs if Genymotion Device Image is used on Alibaba in the Chinese Zone.
For detailed instructions, refer to the article: I am using Genymotion Device Image on Alibaba, in the Chinese zone, and Wifi/Internet is not connected.