My Windows computer told me "The System Administrator Has Set Policies to Prevent This Installation". What should I do?

Your Windows machine is utilizing "S Mode". "S Mode" only allows apps to be downloaded directly from the Microsoft App Store. Playground Sessions is not available on the Microsoft app store and must be downloaded directly from the Playground Sessions website. If your Windows machine is utilizing "S Mode", then you will not be able to install Playground Sessions. 

Please refer to this article from the official Microsoft support page to learn how to disable "S Mode".

Once "S Mode" is disabled, you will be able to successfully install Playground Sessions.