If it detects registry damage, it tries to fix it automatically. Windows Setup runs the Windows Registry Checker tool to verify the integrity of the existing registry before it performs an upgrade.

If the registry contains more than 500 KB of empty data blocks, Windows Registry Checker automatically optimizes it. This is equivalent to running the scanreg /fix command from a command prompt. If no backups are available, Windows Registry Checker tries to make repairs to the registry.

This is equivalent to running the scanreg /autorun command from a command prompt. If invalid registry entries are detected, Windows Registry Checker automatically restores a previous day's backup. Windows Registry Checker automatically scans the system registry for invalid entries and empty data blocks when it is started. This article describes the Windows Registry Checker tool. Files that Windows Registry Checker backs up include System.dat, User.dat, System.ini, and Win.ini. The Deep Clean option requires the professional version of the program.ĪSC works in Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. We tested v16 in Windows 11.When you start your computer successfully, the Windows Registry Checker tool (Scanreg.exe) creates a backup of system files and registry configuration information (including user account information, protocol bindings, software program settings, and user preferences) once daily. Choose Select All a couple of times to clear out all the checkboxes, and then choose Registry Clean followed by SCAN. To run the registry cleaning process, choose Manual Mode from the Care tab. All the features that are offered can be overwhelming and get in your way. One thing we don’t like is that if you’re after a particular cleaning type, like registry cleaning, you must first uncheck all the other options. Moreover, you could actually shut down or restart your PC when the cleaning is finished, so you don’t have to worry about it. Advanced SystemCare is great for the non-tech-savvy because you don’t even have to view the results to repair them. We find the registry scan to be very quick, regardless of the number of errors the program finds. Registry Clean is the utility within it that does the registry cleaning. Must uncheck all other options before scanning the registry.Īdvanced SystemCare Free is one of IObit’s many freeware programs.

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