How to find API authenticator that is failing

[Hectik]

I've been getting this error spamming my jellyfin logs the past couple of days and I'm trying to figure out what could be causing them.

Is there any way for me to find out what is trying to authenticate?

Code:

[color=#ffffff][2024-11-04 09:22:31.115 +00:00] [INF] [47] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:22:51.301 +00:00] [INF] [58] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:22:51.301 +00:00] [INF] [58] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:22:51.301 +00:00] [INF] [58] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:23:51.790 +00:00] [INF] [23] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:23:51.791 +00:00] [INF] [23] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:23:51.791 +00:00] [INF] [23] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:24:55.115 +00:00] [INF] [25] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:25:00.039 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:25:00.039 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:25:00.039 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:25:03.837 +00:00] [INF] [73] Emby.Server.Implementations.ScheduledTasks.TaskManager: "Webhook Item Added Notifier" Completed after 0 minute(s) and 0 seconds
[2024-11-04 09:25:55.115 +00:00] [INF] [58] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:27:43.115 +00:00] [INF] [58] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:28:43.115 +00:00] [INF] [58] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:30:00.063 +00:00] [INF] [47] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:30:00.063 +00:00] [INF] [47] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:30:00.063 +00:00] [INF] [47] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:30:31.115 +00:00] [INF] [65] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:30:55.324 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:30:55.324 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:30:55.324 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:31:31.115 +00:00] [INF] [68] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:31:55.808 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:31:55.808 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:31:55.808 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:32:56.358 +00:00] [INF] [25] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:32:56.358 +00:00] [INF] [25] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:32:56.358 +00:00] [INF] [25] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:33:55.115 +00:00] [INF] [65] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:33:56.904 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:33:56.904 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:33:56.904 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:34:55.115 +00:00] [INF] [65] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:34:57.408 +00:00] [INF] [47] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:34:57.408 +00:00] [INF] [47] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:34:57.408 +00:00] [INF] [47] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:35:00.045 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:35:00.045 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:35:00.046 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:35:57.979 +00:00] [INF] [24] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:35:57.979 +00:00] [INF] [24] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:35:57.979 +00:00] [INF] [24] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:36:43.115 +00:00] [INF] [46] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:36:58.517 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:36:58.517 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:36:58.517 +00:00] [INF] [46] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:37:43.115 +00:00] [INF] [25] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:37:59.038 +00:00] [INF] [68] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:37:59.038 +00:00] [INF] [68] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:37:59.038 +00:00] [INF] [68] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:38:59.600 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:38:59.600 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:38:59.601 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:39:31.115 +00:00] [INF] [65] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:40:00.039 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:40:00.039 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:40:00.039 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:40:00.077 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:40:00.077 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:40:00.077 +00:00] [INF] [65] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:40:31.115 +00:00] [INF] [60] Emby.Server.Implementations.Session.SessionWebSocketListener: Sending ForceKeepAlive message to 1 inactive WebSockets.
[2024-11-04 09:41:04.838 +00:00] [INF] [65] Emby.Server.Implementations.ScheduledTasks.TaskManager: "Webhook Item Added Notifier" Completed after 0 minute(s) and 0 seconds
[2024-11-04 09:42:01.047 +00:00] [INF] [24] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:42:01.047 +00:00] [INF] [24] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:42:01.048 +00:00] [INF] [24] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:43:01.568 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:43:01.568 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:43:01.568 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: AuthenticationScheme: "CustomAuthentication" was challenged.
[2024-11-04 09:44:02.062 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."
[2024-11-04 09:44:02.062 +00:00] [INF] [73] Jellyfin.Api.Auth.CustomAuthenticationHandler: "CustomAuthentication" was not authenticated. Failure message: "Invalid token."[/color][/color][color=#000000]

[TheDreadPirate]

I am not aware of a way to figure out which device is the culprit. But the cause is usually that a device's token had expired, or was manually expired/deleted, and the user hasn't logged back in. USUALLY it is some TV device, like an Android TV or Roku client.