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CheckSUR: Repairing Windows Update

April 30, 2013

Various system resource such as the registry, file data etc can become corrupt and cause problems in the Windows Servicing Store which then makes Windows Update fail. The System Update Readiness Tool or CheckSUR can fix this.

How to run CheckSUR

Windows 8:

Press Windows key + C and type cmd in the search box.

Right click Command Prompt and select Run as Administrator



In the Command Prompt that opens, run the following commands:


1. DISM.exe /Online /Cleanup-image /Scanhealth

2. DISM.exe /Online /Cleanup-image /Restorehealth



When they have finished, type Exit and press Enter and the command prompt will close.



Re-run Windows Update



Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2



Use this link and download/run the appropriate tool for you operating system



The tool verifies what is in the following directories and replaces any files that aren’t correct.



%SYSTEMROOT%\Servicing\Packages

%SYSTEMROOT%\WinSxS\Manifests



It also reads through the following registry keys and checks their health, and resets them to defaults if any have been changed


HKEY_LOCAL_MACHINE\Components

HKEY_LOCAL_MACHINE\Schema

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing



Any errors/fixes will be logged in the log file which is located %systemroot%\Logs\CBS\CBS.log



Mark

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