UWF (Unified Write Filter) is a special file system write filter in Windows 10 that allows you to protect Windows system and user files on the local drive from any changes. When the UWF filter is enabled, any write operations to a protected disk or to the system registry are intercepted by the UWF filter driver and placed in a separate virtual space (overlay). After restarting Windows, all changes on protected drives are not saved, i.e. Windows always reverts to its original state when the UWF filter was enabled. (adsbygoogle = window.adsbygoogle || []).push();