Windows Update 를 실시하면 업데이트 진행이 되다가 모든 업데이트 내용을 실패했다는 메시지가 발생
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Updates are not installed successfully from Windows Update, from Microsoft Update, or by using Automatic Updates after you perform a new Windows XP installation or you repair a Windows XP installation
When you try to install updates from the Windows Update Web site, from the Microsoft Update Web site, or by using the Automatic Updates feature, you receive a message that states that the update or the updates were not installed successfully. However, the updates are not displayed in the Update History part of the Web site.
You experience this problem if the following conditions are true in the following scenarios:
Scenario 1
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You try to update a computer that is running Windows XP.
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You have repaired the Windows XP installation by using the Windows XP CD.
Scenario 2
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You try to update a computer that is running Windows XP.
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You have performed a new installation of Windows XP Service Pack 2 (SP2).
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You have visited Windows Update site directly for updates and immediately performed an update to Windows XP Service Pack 3 (SP3).
This problem occurs because of how the Windows XP repair operation replaces Windows system files. When you repair a Windows installation by using a Windows XP CD, the repair operation performs both of the following operations:
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It replaces all the Windows system files with the corresponding files from the CD.
Note This includes the Windows Update files.
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It restores the Windows registry.
The latest version of Windows Update includes a file that was not available in the release version of Windows XP. This file is named Wups2.dll. Therefore, after the repair operation is complete, the following situation exists:
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The Wups2.dll file remains on the computer.
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The registry entries that correspond to this file are missing.
Because the registry files that correspond to the Wups2.dll file are missing, update installations are unsuccessful.
Scenario 2
This problem occurs when the latest Windows Update client has been installed and then you install Windows XP SP3 before restarting the computer. This causes the new Wups2.dll file not to be enabled (registered). When Windows XP SP3 is installed, it does not detect the Wups2.dll file, and it sets the registry to point to the original Wups.dll file version that is included in Windows XP SP2 and Windows XP SP3. Because the registry files that correspond to the Wups2.dll file are missing, update installations are unsuccessful.
Method 2: Download and install the Windows Update Agent
For more information about how to download the latest version of Windows Update Agent, click the following article number to view the article in the Microsoft Knowledge Base:
949104 (http://support.microsoft.com/kb/949104/) How to obtain the latest version of the Windows Update Agent to help manage updates on a computer
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