CheckSUR: System Update Readiness Tool to repair Windows Update

System resources, such as file data, registry data, and even in-memory data, can develop inconsistencies during the lifetime of the operating system. These inconsistencies may be caused by various hardware failures or by software issues. In some cases, these inconsistencies can affect the Windows Servicing Store, and they can cause a Windows update to fail. When the update fails, it blocks the user from installing updates and service packs.

System Update Readiness Tool

System Update Readiness Tool or CheckSUR addresses this issue. These updates contain the Check for System Update Readiness (CheckSUR) tool. The CheckSUR tool will scan for inconsistencies on your computer and fix them as it’s being installed. Please note that the scan may take up to 15 minutes or longer to run on certain computers. Even if the progress bar seems to stop, the scan continues to run, so do not cancel the process.

How to run Microsoft CheckSUR

Users of Windows 7, Windows Vista, Windows Server 2008 R2, and Windows Server 2008 may follow the download links mentioned here and download the package for your operating system and then run it.

What the tool does is that, it verifies the integrity of the files that are located in the following folders and replace the incorrect data, if found:

  1. %SYSTEMROOT%\Servicing\Packages
  2. %SYSTEMROOT%\WinSxS\Manifests

It also verifies the registry data that is located under the following registry subkeys, and resets them to default values if required:

  1. HKEY_LOCAL_MACHINE\Components
  3. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing

The following are the installation errors, CheckSUR can potentially address:

  1. 0x80070002  ERROR_FILE_NOT_FOUND
  2. 0x8007000D  ERROR_INVALID_DATA
  6. 0x80070490  ERROR_NOT_FOUND
  9. 0x800B0100  TRUST_E_NOSIGNATURE
  10. 0x800F081F  CBS_E_SOURCE_MISSING
  13. 0x800705B9  ERROR_XML_PARSE_ERROR
  15. 0x80092003  CRYPT_E_FILE_ERROR
  16. 0x800B0101  CERT_E_EXPIRED

These errors are typically listed in the %systemroot%\Logs\CBS\CBS.log file or in the CBS.persist.log file.

The System Update Readiness Tool supports Windows 7, Windows Vista, Windows Server 2008 R2, and Windows Server 2008.

Windows 10, Windows 8.1 and Windows 8 users may follow these steps to run the built-in Deployment Imaging and Servicing Management. In Windows 10/8.1/8, the Inbox Corruption Repair brings the functionality of CheckSUR into Windows. You do not require a separate download to get the tool. You may simply Run DISM Tool.

Press Win+C or swipe and choose Search. Type CMD in the search box and hit ‘Enter’. Then, right-click Command Prompt, and choose the ‘Run as administrator’ option.

System Update Readiness Tool

In the Administrator: Command Prompt window, type the following commands exactly as they appear. Press the Enter key after each command:

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

When done, type Exit and press Enter.Run Windows Update again.

These posts may also interest you:

  1. Windows Update not working or page blank
  2. Windows Update fail to install in Windows.

Post ported from WinVistaClub, updated and posted here.

Posted by on , in Category Windows with Tags
Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.