What happened to the Windows 10 deleted program files? When the November update arrived, people complained that some programs like CCleaner, CPU-Z, HWMonitor, Speccy - mostly hardware utilities - were being removed. While Microsoft notifies that “All of your files are exactly where you left them”, sometimes Windows behaves strangely. If a program crashes, it contains bugs, or it conflicts with Windows service, Windows may remove it to keep your operating system stable. Redmond removes some programs due to compatibility reasons. This happens because these updates are very much different from the usual system updates - they are more like installing an entirely new version of Windows.
When you update your Windows 10 system to a new build or a new version, Microsoft deletes certain incompatible programs. Microsoft has refused to comment regarding this strange issue, but it only happens during the major updates.