You could have downloaded RegDefense 4.1.5.6 from our software library for free. This software is an intellectual property of Xionix Inc. The latest version of the software is supported on PCs running Windows XP/Vista/7/8/10/11, 32-bit. RDFNSStartuper.exe, Reg32.exe, RegDefense.exe or RegistryDefense.exe are the common file names to indicate the RegDefense installer. The most popular version among the software users is 4.1. The program is included in System Utilities.
From the developer:
RegDefense is the Top Registry Cleaner used amongst experts and computer professionals. RegDefense's Patented Technology combines a powerful deep registry scan with an Easy-To-Use interface. RegDefense 2009 does not require any technical knowledge making it the right choice for every PC user. Errors and corrupt files in your Windows registry compromise the integrity of your system.
You may want to check out more software, such as Appget, Ashampoo Magical UnInstall or Innovative System Optimizer, which might be related to RegDefense.