After a user logs in to Columbus the session is kept alive as long as the browser is running with a Columbus application in any of the tabs. More precisely this is for all the pages like navigation, image analysis, import, export etc, not for the admin pages or job status page.
The session is killed if a user logs out (as long as there are no background jobs running under this session). The session is also killed 10 minutes after the user closes the browser (or the tabs) that displayed the Columbus app.
When background jobs are running the session will not be terminated, the 10 minute timeout would be applied at the point the background job finishes.
RAH
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