====== How to open an MSI Session ======

MSI session can be opened for any hEIDI project, see how to [[createProject|create an hEIDI Project]] for more information. 

An MSI session should be opened in order to be able to explore a MSI db content. This could be done in one or two few steps. 

  * ** Activate hEIDI Project ** (optional) : If two projects are associated to the same MSI db, only one could be active at the same time. Even the project content is only visible for active projects. 
    * To active a project right-click on the project node in ''Project'' tab and choose ''Activate Project''.  {{ :activate_project.png |}}
    * The project's content is now visible : connection information and previously saved data (contexts comparison results, ...) {{ :opened_project.png |}}

  * ** Open Session ** : 
    * Select the hEIDI project to work on and click menu ''MS Identifications > Open session...''. If the selected project was not active, hEIDI will first try to execute first step (see above).
    * A new tab, identified with project's name, is open and display the MSIdb context content.

==== Troubleshooting ====

  * If ''Activate Project'' option is not available, verify there is no other project active for the same MSI db.
  * The following error occurs if the database connection associated with the project doesn't exist any more.    
   {{ :projects_open_error.png |}}