Interactive Session is one of the metrics of Logon Duration monitored by Citrix Director. There have been questions regarding what constitutes this metric and why this is the lengthiest process in total logon duration. This blog is to provide insight on how the Interactive Session is calculated. More details about other Logon Duration metrics can be found here. As mentioned, Interactive Session is just one of the Logon Duration steps that contributes to the overall logon time. It is the time taken to handoff keyboard and mouse control to the user after the profile of the user is loaded for a session. Interactive session time is calculated using the following formula: Interactive Session Duration = Desktop Ready Event Timestamp (EventId 1000 on VDA) – User Profile Loaded Event Timestamp (EventId 2 on VDA) Now let’s look at each of the components of this formula. The Desktop Ready Event logged by Citrix Profile Management indicates the session is ready to be used by the user.