Why is Office 2016 activated sometimes automatically?

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I'm an employee and I downloaded Office 2016 from Studisoft (MS Campus EES). I did not receive any error message concerning the activation. E.g. in Word, it said, that Office already have been activated.

Although I typed these commands into the command prompt, which gave me these results:

Can you tell me please, how this is possible and if I need further steps in order to keep Office activated?