New answers tagged google-plus-hangouts
You can hide that particular contact. In order to remove a person from your Hangouts contacts list: Open Hangouts within Gmail. Hover over the contact's name. Click the 3 dot menu. Select "Hide contact's name". For more see the Hangouts Help Hide contact.
Open the last conversation with the person in your hangouts, click the configuration (gear) icon and either archive or delete the hangout. This will also remove the person from you hangouts list. Alternatively, if the person appears in your contacts (http://google.com/contacts), find it and delete it from your contacts, will also remove from the hangouts ...
I tried logging out and logging back in. Didn't work. Then I tried clearing some things from the cache and it initially didn't work, but when I went back and added the "Cookies and other site and plug-in data" checkbox I was forced to log in again and it worked: annoying invisible hangout window re-appears. So it seems to be related to the cookies cache ...
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