Winsxs Size Cleanup
The short answer To see the size that the WinSxS directory takes up: Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore To clean up if necessary: Dism.exe /online /Cleanup-Image /StartComponentCleanup To do a really deep cleanup (you will no longer be able to roll back any previous updates): Dism.exe /online /Cleanup-Image /StartComponentCleanup /ResetBase Background While helping someone clean up some disk space on their Windows desktop I decided it would be a good idea to collect the information about one of the more mysterious things together in one spot for easy access....