Isolating Windows from Mac
You can isolate Windows from macOS so that they no longer share folders, profiles, or applications. In this setup, connected external devices are no longer automatically accessible by Windows, Windows and Mac no longer synchronize sound volume, and you can no longer copy or move objects between Windows and macOS. Isolating Windows from macOS may provide a higher level of security by not allowing compromised items from one OS to come into contact with the other.
To isolate Windows from macOS
Do one of the following:
Click the Parallels Desktop icon in the menu bar and choose Configure.
If the Parallels Desktop menu bar is visible at the top of the screen, choose Actions > Configure.
Click Security.
Select Isolate Windows from Mac.