What is a reg file and how do I open a reg file?
A REG file updates the Windows Registry when run. Custom REG files can be created to alter different aspects of Windows. Manually updating the Windows registry is an advanced process and should only be performed if you know exactly what you are doing. Incorrect registry updates may render Windows inoperable.
Relevant reg file links:How to open reg file on Youtube
How to open reg file on Wikipedia
How to open reg file on Microsoft.com