CelloSaaS provides a configuration level settings which will help you to either Enable/Disable concurrent logins from multiple system. 

To Enable or Disable

In App Settings, if you set the EnableUserActivityTrace as True then same user can't login form different machines.

<add key="EnableUserActivityTrace" value="false"/>


  • This is an application level setting and not Tenant level. 
  • User must properly log-off from the application other wise he can't login for next x minutes.