Video chat, Hangouts, or Call Phones on Windows 8
The Windows 8-style UI doesn’t allow web browsers to use plugins. This means that features like, Google+ Hangouts, Call Phone in Gmail, and computer-to computer voice and video chat, that use the Hangouts plugin, won’t work in the Windows 8-Style UI.
However, you can still use Hangouts, Call Phone, and Voice and Video chat by switching from the Windows 8-style UI to Desktop mode.
- Switch to desktop mode in Chrome (Read the first section titled, “Switch between Chrome on the desktop and Chrome in Windows 8 mode”)