DISM – Spring cleaning
Useful cleaning commands with dism – for now, the Windows 7 command can still be used in Windows 10 (1607)
Windows 10
dism /Online /Cleanup-Image /StartComponentCleanup /ResetBase
Windows 8.1
dism /Online /Cleanup-Image /StartComponentCleanup /ResetBase
Windows 8
dism /Online /Cleanup-Image /StartComponentCleanup
Windows 7
dism /Online /Cleanup-Image /SPSuperseded /HideSP