RegClean analyzes Windows Registry keys that are stored in a common location in the Windows Registry. It finds keys that contain erroneous values, and after recording those entries in an UNDO.REG file, it removes them from the Windows Registry. What RegClean Does:
RegClean analyzes Windows Registry keys that are stored in HKEY_CLASSES_ROOT in the Windows Registry. It finds keys that contain erroneous values, and after recording those entries in an Undo.reg file, it removes them from the Windows Registry.
What RegClean Does Not Do:
RegClean does not fix every known problem with the registry. It does not fix a corrupt registry; it is limited to fixing problems with normal Windows Registry entries located in HKEY_CLASSES_ROOT.
It is very possible that RegClean will not correct a problem that you have encountered. RegClean will leave any entries in the registry that it does not understand or that could possibly be correct.
Limitations:
The RegClean utility is no longer supported and has been removed from all Microsoft download sites.
Wise Registry Cleaner scans the Windows registry and finds incorrect or obsolete information in the registry. This is one of many tools included in the Wise Care 365 free suite.
RegCleaner is an easy-to-use program. With RegCleaner, you can easily get rid of those old and obsolete registry entries created by software that you destroyed ages ago.
Tweaking.com - Registry Backup is a backup tool that uses the Windows Volume Shadow Copy Service to backup your system registry. From the author of Tweaking.Com - Windows Repair.