{"action":"created","issue":{"url":"https://api.github.com/repos/IdentityServer/IdentityServer3/issues/1083","labels_url":"https://api.github.com/repos/IdentityServer/IdentityServer3/issues/1083/labels{/name}","comments_url":"https://api.github.com/repos/IdentityServer/IdentityServer3/issues/1083/comments","events_url":"https://api.github.com/repos/IdentityServer/IdentityServer3/issues/1083/events","html_url":"https://github.com/IdentityServer/IdentityServer3/issues/1083","id":62237351,"number":1083,"title":"Check session endpoint enabled, but SessionId is missing","user":{"login":"parkinsona","id":8508456,"avatar_url":"https://avatars.githubusercontent.com/u/8508456?v=3","gravatar_id":"","url":"https://api.github.com/users/parkinsona","html_url":"https://github.com/parkinsona","followers_url":"https://api.github.com/users/parkinsona/followers","following_url":"https://api.github.com/users/parkinsona/following{/other_user}","gists_url":"https://api.github.com/users/parkinsona/gists{/gist_id}","starred_url":"https://api.github.com/users/parkinsona/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/parkinsona/subscriptions","organizations_url":"https://api.github.com/users/parkinsona/orgs","repos_url":"https://api.github.com/users/parkinsona/repos","events_url":"https://api.github.com/users/parkinsona/events{/privacy}","received_events_url":"https://api.github.com/users/parkinsona/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/IdentityServer/IdentityServer3/labels/1%20-%20Ready","name":"1 - Ready","color":"CCCCCC"},{"url":"https://api.github.com/repos/IdentityServer/IdentityServer3/labels/bug?!","name":"bug?!","color":"fc2929"},{"url":"https://api.github.com/repos/IdentityServer/IdentityServer3/labels/question","name":"question","color":"cc317c"}],"state":"closed","locked":false,"assignee":{"login":"leastprivilege","id":1454075,"avatar_url":"https://avatars.githubusercontent.com/u/1454075?v=3","gravatar_id":"","url":"https://api.github.com/users/leastprivilege","html_url":"https://github.com/leastprivilege","followers_url":"https://api.github.com/users/leastprivilege/followers","following_url":"https://api.github.com/users/leastprivilege/following{/other_user}","gists_url":"https://api.github.com/users/leastprivilege/gists{/gist_id}","starred_url":"https://api.github.com/users/leastprivilege/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/leastprivilege/subscriptions","organizations_url":"https://api.github.com/users/leastprivilege/orgs","repos_url":"https://api.github.com/users/leastprivilege/repos","events_url":"https://api.github.com/users/leastprivilege/events{/privacy}","received_events_url":"https://api.github.com/users/leastprivilege/received_events","type":"User","site_admin":false},"milestone":null,"comments":10,"created_at":"2015-03-16T23:34:03Z","updated_at":"2015-03-23T07:58:43Z","closed_at":"2015-03-18T09:42:15Z","body":"Hi,\r\n\r\nI've recently updated from 1.1.1 to 1.3.0 and have started receiving this error message:\r\n\"Check session endpoint enabled, but SessionId is missing\"\r\n\r\nI had a quick look through the source, and found its happening here:\r\n``` c#\r\n if (_options.Endpoints.EnableCheckSessionEndpoint)\r\n{\r\n  var sessionId = _sessionCookie.GetSessionId();\r\n  if (sessionId.IsPresent())\r\n  {\r\n    request.SessionId = sessionId;\r\n  }\r\n  else\r\n  {\r\n    LogError(\"Check session endpoint enabled, but SessionId is missing\", request);\r\n  }\r\n}\r\n```\r\n\r\nIf I clear all my cookies, and go to Identity Server then it never finds a session on the first authentication request, and will log this error. I don't quite understand what the check is doing, I couldn't find any info in the related issues.\r\n\r\nIt looks like I can just turn the check off, but I'm not sure what impact that will have?\r\nI'm also not sure where to change it? Is there doco for this Check Session Endpoint?"},"comment":{"url":"https://api.github.com/repos/IdentityServer/IdentityServer3/issues/comments/84871309","html_url":"https://github.com/IdentityServer/IdentityServer3/issues/1083#issuecomment-84871309","issue_url":"https://api.github.com/repos/IdentityServer/IdentityServer3/issues/1083","id":84871309,"user":{"login":"leastprivilege","id":1454075,"avatar_url":"https://avatars.githubusercontent.com/u/1454075?v=3","gravatar_id":"","url":"https://api.github.com/users/leastprivilege","html_url":"https://github.com/leastprivilege","followers_url":"https://api.github.com/users/leastprivilege/followers","following_url":"https://api.github.com/users/leastprivilege/following{/other_user}","gists_url":"https://api.github.com/users/leastprivilege/gists{/gist_id}","starred_url":"https://api.github.com/users/leastprivilege/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/leastprivilege/subscriptions","organizations_url":"https://api.github.com/users/leastprivilege/orgs","repos_url":"https://api.github.com/users/leastprivilege/repos","events_url":"https://api.github.com/users/leastprivilege/events{/privacy}","received_events_url":"https://api.github.com/users/leastprivilege/received_events","type":"User","site_admin":false},"created_at":"2015-03-23T07:58:43Z","updated_at":"2015-03-23T07:58:43Z","body":"Yes, it is not released yet. Is it urgent?"}}