Users unable to receive client event notifications

  • 24 February 2022
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Users unable to receive client event notifications


K2 blackpearl 4.7
K2 blackpearl 4.7
Microsoft Exchange
This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice. This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
This article has been archived, and/or refers to legacy products, components or features. The content in this article is offered "as is" and will no longer be updated. Archived content is provided for reference purposes only. This content does not infer that the product, component or feature is supported, or that the product, component or feature will continue to function as described herein.


All users are unable to receive client event notifications due to the following error:

"No destinations could send the message"


  • From the host server logs, the full error message logged is as follows:


"Error","MessageBus","61007","SendMessageException","MessageBusRuntime","61007 Permanent failure sending message ClientEvent Notification test: System.Exception: No destinations could send the message ClientEvent Notification test. at SourceCode.MessageBus.Server.MessageBusRuntime.SourceCode.MessageBus.IMessageDestination.Send(String title, MessageExtendedInformation extended, IEnumerable`1 attachments, MessageBodyReader[] messageBodies)"


  • Email notifications from escalation and email events are working fine.

Troubleshooting Steps

As SmartActions is enabled, K2 will use the email address that is bound to the account specified in the "self" node in the K2HostServer.exe.config file.


<system self="K2:DENALLIXK2Service" enableListeners="True" allowAmbiguity="true" />


Executing the UMUser SmartObject > Get User Details method against the account did not return an email address.


To resolve the issue, please follow the steps below:

1. Update the account's email address in Active Directory.


2. Manually expire the account's identity cache using the Force Identity Refresh Tool. 


3. Execute the UMUser SmartObject > Get User Details method to trigger a refresh.

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