Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, for Windows 7, and for Windows Server 2008 R2

INTRODUCTION This article describes the System Update Readiness Tool for Windows Vista, Windo…

This article describes the System Update Readiness Tool for Windows Vista, Windows Server 2008, Windows Server 2008 R2, and Windows 7.
You may become unable to install updates from Windows Update, due to inconsistencies in file data or registry data. By installing the System Update Readiness Tool, you can resolve these inconsistencies and you will be able to install updates from Windows Update. After the System Update Readiness Tool is installed, install updates again from Windows Update.

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How to download and install the System Update Readiness Tool

There are two methods that can be used to download and install the System Update…

There are two methods that can be used to download and install the System Update Readiness Tool. If an error occurs while you run Windows Update or if you want to make sure the System Update Readiness Tool is properly installed, try Method 2.

Method 1: Use Windows Update

To download and install the System Update Readiness Tool, follow the steps below:

1. Click Start Collapse this imageExpand this image

, and click Control Panel.

If you use Windows 7, click System and Security. If you use Windows Vista, click Security.

Under Windows Update, click Check for updates.

The System Update Readiness Tool (KB947821) is offered, only when there is a problem that the tool could resolve. Click Install updates.

Method 2: Use the Microsoft Download Center

To download the System Update Readiness Tool from the Microsoft Download Center and install in the following table list:
Note To install the correct version of System Update Readiness Tool, you must know your Windows version.

• To find out which Windows version is installed to your computer, follow these steps:
  Click here to view or hide step-by-step instructions with pictures
  1. Click Start and type msinfo32 in the Start Search or Search programs and files, then press ENTER. Collapse this imageExpand this image

In the OS Nameline, locate which version of Windows is installed to your computer. In System Type line, locate the type of your computer.

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The following files are available for download from the Microsoft Download Center:

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Operating system
Download link

All supported x86-based versions of Windows Vista

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Download the update package now.

All supported x64-based versions of Windows Vista

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Download the update package now.

All supported x86-based versions of Windows Server 2008

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Download the update package now.

All supported x64-based versions of Windows Server 2008

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Download the update package now.

All supported IA-64-based versions of Windows Server 2008

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Download the update package now.

All supported x86-based versions of Windows 7

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Download the update package now.

All supported x64-based versions of Windows 7

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Download the update package now.

All supported x64-based versions of Windows Server 2008 R2

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Download the update package now.

All supported IA-64-based versions of Windows Server 2008 R2

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Download the update package now.

Note The System Update Readiness Tool scans for inconsistencies in your computer, while it is being installed. It typically takes less than 15 minutes to run the scan, however, the tool might take significantly longer on some environments. Although the progress bar may appear to stop, the scan is still running and you should not cancel the update.

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MORE INFORMATION

What does the System Update Readiness Tool do? The System Update Readiness Tool…

What does the System Update Readiness Tool do?

The System Update Readiness Tool verifies the integrity of the following resources:

• Files that are located under the following directories:
  • %SYSTEMROOT%ServicingPackages
  • %SYSTEMROOT%WinSxSManifests
• Registry data that is located under the following registry subkeys:
  • HKEY_LOCAL_MACHINEComponents
  • HKEY_LOCAL_MACHINESchema
  • HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionComponent Based Servicing

Note This list may be updated at any time.
When the System Update Readiness Tool detects incorrect manifests, files, or registry data, it might replace the incorrect data with a corrected version. Back to the top

What Windows Update installation errors can the System Update Readiness Tool potentially address?

The following table lists the Windows Update installation errors that you might be fixed by the System Update Readiness Tool. However, the tool might be unable to fix all cases in which these errors occur.

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Code
Error
Description

0x80070002
ERROR_FILE_NOT_FOUND
The system cannot find the file specified.

0x8007000D
ERROR_INVALID_DATA
The data is invalid.

0x800F081F
CBS_E_SOURCE_MISSING
The source for the package or file not found.

0x80073712
ERROR_SXS_COMPONENT_STORE_CORRUPT
The component store is in an inconsistent state.

0x800736CC
ERROR_SXS_FILE_HASH_MISMATCH
A component’s file does not match the verification information present in the component manifest.

0x800705B9
ERROR_XML_PARSE_ERROR
Unable to parse the requested XML data.

0x80070246
ERROR_ILLEGAL_CHARACTER
An invalid character was encountered.

0x8007370D
ERROR_SXS_IDENTITY_PARSE_ERROR
An identity string is malformed.

0x8007370B
ERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_NAME
The name of an attribute in an identity is not within the valid range.

0x8007370A
ERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_VALUE
The value of an attribute in an identity is not within the valid range.

0x80070057
ERROR_INVALID_PARAMETER
The parameter is incorrect.

0x800B0100
TRUST_E_NOSIGNATURE
No signature was present in the subject.

0x80092003
CRYPT_E_FILE_ERROR
An error occurred while Windows Update reads or writes to a file.

0x800B0101
CERT_E_EXPIRED
A required certificate is not within its validity period when verifying against the current system clock or the time stamp in the signed file.

0x8007371B
ERROR_SXS_TRANSACTION_CLOSURE_INCOMPLETE
One or more required members of the transaction are not present.

0x80070490
ERROR_NOT_FOUND
Windows could not search for new updates.

Logging

The System Update Readiness Tool creates a log file that captures any issues that the tool found or fixed. The log file is located at the following location:

• %SYSTEMROOT%LogsCBSCheckSUR.log
• %SYSTEMROOT%LogsCBSCheckSUR.persist.log

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p>Source: Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, for Windows 7, and for Windows Server 2008 R2