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Webhook plugin not sending correct information or sometimes no information at all - Printable Version

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Webhook plugin not sending correct information or sometimes no information at all - Andy Brown - 2025-09-09

Hi,
I am struggling with the Webhook plugin. I get notifications for through Notifiarr using the jellyfin webhook. Notifiarr provides the webhook URL with my own API key. It's working for things like Playback Start and plugin uninstall. It half works for Session Start because it sends the username, device and client but things like Last login time and last active time always just say Never. The people at Notifiarr showed me one of the Session Start payloads they received from my jellyfin webhook and all the time related things were basically zero's. Here's an example of what they showed me https://imgur.com/a/pZW3IDD

And here is what the actual notifiarr notification is showing for Session Start: https://imgur.com/a/vQdde5k

Lastly, things like Authentication Failure and plugin install don't work at all no matter what I do.

To be clear it shouldn't be a template issue because the Notifiarr guide says to select the "Send All Properties (ignores template)" option in the jellyfin webhook settings.

I've been trying for over a day now to get this fully working with no success. I've also tried asking in the official Jellyfin Matrix network. But didn't really get much in the way of responses there.

I've also done some testing with webhook.site and for example I can see it doesn't get anything at all for things like Authentication Failure and User Created. But it does receive that messed up information for Session Start as well as correct information for Playback start.

Hoping someone can help me solve this.
Thanks.