Version 5.6.1 and its close iterations support legacy systems through Windows 10; older versions were notable for adding Windows Vista support.
| Feature | WinASO Registry Optimizer 561 | CCleaner (Free) | Wise Registry Cleaner | Built-in Windows Disk Cleanup | | :--- | :--- | :--- | :--- | :--- | | | Very High (15+ hives) | Medium (8 hives) | High (12 hives) | None | | Backup & Restore | Yes | Yes | Yes | N/A | | Registry Compaction | Yes | No | Yes | No | | System Tune-up Tools | Minimal (Startup mgr only) | Yes (Browser cleanup) | Yes (System tweaks) | No | | Price | One-time fee (older version often free) | Freemium | Freemium | Free | | Windows 11 Support | Limited (best for W7/W8/W10) | Full | Full | Full | winaso registry optimizer 561
The biggest fear when editing the registry is breaking the system. WinASO 5.6.1 automatically creates a backup before any changes are applied. If a "fix" causes an issue, you can revert to the previous state with a single click. 4. Privacy Cleaner Version 5
From an archival perspective, version 561 is famous for its and speed . Unlike newer versions that try to do everything (driver updater, junk file cleaner, privacy protector), build 561 focuses almost exclusively on the Registry. If a "fix" causes an issue, you can