Introduction - If you have any usage issues, please Google them yourself
Windows operating system registry contains a lot of information about the computer running configuration, open the registry we can see that the registry is a directory tree structure according to a similar organization, in which the second-level directory contains five predefined master keys are : HKEY_CLASSES_ROOT, HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CURRENT_CONFIG.