Registry Checker Tool - SCANREGW.EXE

Scanreg checks for registry errors and often runs in with an /autoscan parameter at Startup. This parameter will automatically back up the registry without displaying any prompts. For information on other useful parameters see the following link.
Command-Line Switches for the Registry Checker Tool (Q184023)

Description of the Windows Registry Checker Tool (Scanreg.exe) (Q183887)

Safe

Microsoft