When you sign in or out of Hangouts on one device, you aren’t automatically signed in or out of Hangouts on other devices.
For example, if you sign in on your computer, you're not automatically signed in on your phone.
- On your computer, go to hangouts.google.com or open Hangouts in Gmail.
- Enter your Google account information.
- Click Sign in. In Gmail, on the left, click Sign in.
To use Hangouts with multiple accounts at the same time, you can:
Sign out of hangouts.google.com
When you sign out of hangouts.google.com, you sign out of other Google services, including Gmail, Inbox, and Google+.
- On your computer, go to hangouts.google.com.
- In the top right, click your profile photo.
- Click Sign out.