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It looks like I was not the only one trying to avoid javascript altogether for a solution with OAuth 2.0 serverside. People could do everything but they couldn't logout: Facebook Oauth Logout Oauth Logout using facebook graph api Facebook OAuth2 Logout does not remove fb_ cookie The official documentation for OAuth 2.0 with Facebook says: You can log a user out of their Facebook session by directing them to the following URL: https://www.facebook.com/logout.php?next=YOUR_URL&access_token=ACCESS_TOKEN YOUR_URL must be a URL in your site domain, as defined in the Developer App. I wanted to do everything serverside and I found that the suggested way to link leaves the cookie so that the logout link doesn't work: https://www.facebook.com/logout.php?next=http://{{host}}&access_token={{current_user.access_token}} It does redirect but it doesn't log the user out of my website. It seemed like a Heisenbug since this was changing to me and there was not much documentation. I anyway seemed to be able to achieve the functionality with a handler that manipulates the cookie so that in effect the user is logged out: class LogoutHandler(webapp2.RequestHandler): def get(self): current_user = main.get_user_from_cookie(self.request.cookies, facebookconf.FACEBOOK_APP_ID, facebookconf.FACEBOOK_APP_SECRET) if current_user: graph =

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