The generation of the Remote Assistance invitation failed
When a helpdesk operator wants to start a Remote Assistance session with a user, a request is sent to the user session behind the scenes, so a Remote Assistance invitation is generated and sent back to the operator.
In the machine where the user session is hosted, the Microsoft Remote Assistance executable is executed to generate the invitation file and send it back to the helpdesk operator.
This message indicates that an error occurred during the invocation of the executable. The “Start Remote Assistance” job will contain further details about the error.