I have got the problem in my Google Talk: "Oops! You are not invisible because you're logged into Google Talk from another client, device, or location that doesn't support invisibility". I tried to fix the problem using site https://karthikkn.wordpress.com/2013/07/16/fixed-the-always-online-problem-with-google-chat/ but I could not manage a protocol. When I had confirmed Google talk protocol in Pidgin Add Account table then I automatically got XMPP protocol and I am not able to change it. How to solve this problem ?