Error Nuker scans Windows registry and shortcuts for invalid entries, and fixes detected errors. It can scan the entire registry or particular sections (shared DLLs, invalid start-up entries). The first is the simplest way to clean the registry and it is recommended for non-technical users. After the scan Error Nuker presents a detailed list of errors, broken down by type. It can fix individual errors, errors of a certain type, or all errors. You can delete a broken entry, repair it (if possible), or edit the entry manually.

Before making a change, Error Nuker automatically creates a backup file that can be used to undo the change. Error Nuker will scan Windows registry and fix help files, fonts, shared folders, shortcuts and MRU for free. It also will include details for those errors the free version will not repair. Skilled users can fix it manually or if not, purchase a registration key and have Error Nuker do the full cleaning and backup for you.