A .reg file is a text-based file used to import data into the Windows Registry. Instead of navigating the complex folder structure of the Registry Editor ( regedit ) manually, a user can simply double-click a .reg file to instantly apply the changes contained within it.
When you double-click this .reg file, it modifies a specific DWORD (32-bit) value inside the Windows Registry. The target path is typically: Shadowplaycursorcapturedisable.reg
How to hide your mouse cursor in rec | NVIDIA GeForce Forums Shadowplaycursorcapturedisable.reg