How to identify the logs if Team Viewer is Run once without installing the application

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Photon

How to identify the logs if Team Viewer is Run once without installing the application

Hello Team,

I am investigating one of the user has been downloaded the team viewer and He run the application one time and looks like he might shared some important files . where i can see the logs for it what he Did ? any help would be highly appericated 

Thanks,

John