Therefore, after you run the Disk Cleanup wizard, you may be unable to roll back to a superseded update. To let you roll back to previous updates, updates are stored in the WinSxS store even after they are superseded by later updates. The Windows Update Cleanup option is available only when the Disk Cleanup wizard detects Windows updates that you do not need on the computer. After you install this update, you can use the Windows Update Cleanup option to delete Windows updates that you no longer need. This update adds a new plugin to the Disk Cleanup wizard. This article describes an update for the Disk Cleanup wizard in Windows 7 Service Pack 1 (SP1) or in Windows Server 2008 R2 SP1. Windows 7 Service Pack 1 Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Starter Windows 7 Ultimate Windows Server 2008 R2 Service Pack 1 Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Foundation Windows Server 2008 R2 Standard More.

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