# Session message handler not working on 8.1.44 **URL:** \ **Category:** Ignition\ **Tags:** perspective\ **Created:** [November 15, 2024, 3:10am UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647 "2024-11-15T03:10:11Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Eugene49](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Eugene49](https://forum.inductiveautomation.com/u/Eugene49)\ **Post date:** [November 15, 2024, 3:10am UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/1 "2024-11-15T03:10:11Z")
Possible Bug? So I backup my gateway, and restore it on latest ignition 8.1.44. - Did I miss to configure any setting?? This was working on 8.1.37 Problem: Message Handler configured in View, not receiving Message send by Session **Button Action** ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/e/3eba8a76b8c41bd12280d363c6ecd9dc0aa2a1c7.png) ```python system.util.sendMessage( project = system.project.getProjectName(), messageHandler = "sessionMsgHandler", payload={}, scope="S" ) logger = system.util.getLogger("sessionBug") logger.info("sent message to sessionMsgHandler") ``` **On Session Event Message Handler:** ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/0/403efd35b798d7699affacefaa65dbe8c89981cf.png) **On View's Message Handler:** ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/0/b0ee4736db724125839b1abb3f95321439544c92.png) **Logs:** ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/1/619b4bd8731dfa7757b7857eaf2996bf08ab1177.png) ---
**Author:** ![michael.flagler](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/michael.flagler/32/26272_2.png) [@michael.flagler](https://forum.inductiveautomation.com/u/michael.flagler)\ **Post date:** [November 15, 2024, 4:33am UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/2 "2024-11-15T04:33:47Z")
Maybe I'm stating the obvious, but your view with the event handler is open when you're calling it? ---
**Author:** ![diamond](https://avatars.discourse-cdn.com/v4/letter/d/e79b87/32.png) [@diamond](https://forum.inductiveautomation.com/u/diamond)\ **Post date:** [November 15, 2024, 7:15am UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/3 "2024-11-15T07:15:21Z")
We are on 3.1.44 too and session messages are working well for us. It must be a problem with your project. ---
**Author:** ![pascal.fragnoud](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pascal.fragnoud/32/24728_2.png) [@pascal.fragnoud](https://forum.inductiveautomation.com/u/pascal.fragnoud)\ **Post date:** [November 15, 2024, 12:19pm UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/4 "2024-11-15T12:19:07Z")
Is there any error in your logs ? ---
**Author:** ![Eugene49](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Eugene49](https://forum.inductiveautomation.com/u/Eugene49)\ **Post date:** [November 15, 2024, 1:41pm UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/5 "2024-11-15T13:41:19Z")
> [@diamond](#): > > We are on 3.1.44 too and session messages are working well for us. It must be a problem with your project. Session message handler are able to received messages. It is either Session not sending `system.perspective.sendMessage` or view not listening to "Session" Scope. -- but view session scope is working, when messages are sent from view. @diamond are you doing `system.perspective.sendMessage` from your session? > [@pascal.fragnoud](#): > > Is there any error in your logs ? Nope, no error on gateway log. ---
**Author:** ![pascal.fragnoud](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pascal.fragnoud/32/24728_2.png) [@pascal.fragnoud](https://forum.inductiveautomation.com/u/pascal.fragnoud)\ **Post date:** [November 15, 2024, 1:46pm UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/6 "2024-11-15T13:46:43Z")
> [@Eugene49](#): > > @diamond are you doing `system.perspective.sendMessage` from your session? I just tried and it works just fine. As Michael asked: Are you trying this when the view is opened ? It needs to be opened for the message handler to be active. ---
**Author:** ![Eugene49](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Eugene49](https://forum.inductiveautomation.com/u/Eugene49)\ **Post date:** [November 15, 2024, 1:50pm UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/7 "2024-11-15T13:50:29Z")
Thanks for testing on your side. Yes, view is open.. The button sending message, and the message handler receiving are on the same view. I will keep on troubleshoot then.. ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 15, 2024, 2:09pm UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/8 "2024-11-15T14:09:28Z")
Session messages sent with `system.util.sendMessage()` can only be caught by message handlers defined on the session. Component message handlers can only catch messages sent with `system.perspective.sendMessage()`. ---
**Author:** ![Eugene49](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Eugene49](https://forum.inductiveautomation.com/u/Eugene49)\ **Post date:** [November 16, 2024, 12:59am UTC](https://forum.inductiveautomation.com/t/session-message-handler-not-working-on-8-1-44/98647/9 "2024-11-16T00:59:15Z")
in perspective I call `system.util.sendMessage` for session's message handler. In session message handler I call `system.perspective.sendMessage` for view's message Handler. But in my case, view's message handler does not receive the message. I don't have to time to troubleshoot, as this is urgent, so I reverted back to 8.1.37.