Microsoft KB Archive/938979

= An update is available that improves the performance and reliability of Windows Vista =

Article ID: 938979

Article Last Modified on 12/4/2007

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APPLIES TO


 * Windows Vista Enterprise 64-bit Edition
 * Windows Vista Home Premium 64-bit Edition
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Business
 * Windows Vista Business 64-bit Edition
 * Windows Vista Enterprise
 * Windows Vista Home Premium
 * Windows Vista Ultimate

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INTRODUCTION
This update resolves issues that may affect some Windows Vista-based computers. These issues have been reported by customers who are using the Error Reporting service or Microsoft Customer Support Services.

By applying this update, you can achieve better performance and responsiveness in various scenarios. This update also improves the reliability of Windows Vista.

This update resolves the following issues on a Windows Vista-based computer:  You experience a long delay when you try to exit the Photos screen saver. A memory leak occurs when you use the Windows Energy screen saver. If User Account Control is disabled on the computer, you cannot install a network printer successfully. This problem occurs if the network printer is hosted by a Windows XP-based or a Windows Server 2003-based computer. When you write data to an AVI file by using the AVIStreamWrite function, the file header of the AVI file is corrupted. When you copy or move a large file, the &quot;estimated time remaining&quot; takes a long time to be calculated and displayed. After you resume the computer from hibernation, it takes a long time to display the logon screen. When you synchronize an offline file to a server, the offline file is corrupted. If you edit an image file that uses the RAW image format, data loss occurs in the image file. This problem occurs if the RAW image is from any of the following digital SLR camera models: <ul> Canon EOS 1D</li> Canon EOS 1DS</li></ul>

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

932988 Files from a Canon EOD 1D or 1DS camera may be corrupted after you use Windows Photo Gallery, Windows Live Photo Gallery, or Windows Explorer to edit the file metadata in Windows Vista or in Windows XP Service Pack 2

</li> After you resume the computer from hibernation, the computer loses its default gateway address.</li> Poor memory management performance occurs.</li></ul>

<div class="summary_section">

Known issues
Some customers may have manually changed certain default settings or manually removed certain default folders and links. When the updated shell component of this update is installed, it restores the default settings, folders, and shortcuts. These items will not be reset during future shell component updates.

Default settings
The following two user configuration settings are reset to their default values:
 * Tablet PCs whose default screen orientation has been changed to Left Handed are reset to Right Handed. (For users of Arabic and Hebrew, the default screen orientation is reset to Left Handed.) To restore the setting, use the Tablet PC Settings item in Control Panel.
 * In Windows Explorer, when the Show hidden and protected OS files setting is enabled on the View tab of the Folder Options dialog box, the setting is disabled.

Default folders
If a customer has manually removed the system-created default folders from their local user profile folder, these default folders are re-created. The affected folders are the following.

Note Typically, the path of the local user profile folder is C:\Users\ \Documents.
 * Contacts
 * Desktop
 * Documents
 * Downloads
 * Favorites
 * Links
 * Music
 * Pictures
 * Saved Games
 * Searches
 * Videos

Default links
If a customer has manually deleted the default shortcuts that were created by the system, these shortcuts are re-created. There are three specific groups:
 * Shortcuts to the sample content folders: Sample Pictures, Sample Music, and Sample Videos
 * The Documents shortcut in the SendTo shortcut menu
 * Shortcuts in the Favorite Links section of Windows Explorer. These shortcuts include the following:
 * Documents
 * Pictures
 * Music
 * Recently Changed
 * Searches
 * Public

<div class="moreinformation_section">

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

Update for Windows Vista, 32-bit versions

Download the 938979 package now.

Update for Windows Vista, 64-bit versions

Download the 938979 package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites
No prerequisites are required.

Restart requirement
You have to restart the computer after you apply this update.

Update replacement information
This update does not replace any other previously released updates.

File information
The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 64-bit versions
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

939720 Error message when you start a Windows Vista-based computer: &quot;STOP: 0x00000050 PAGE_FAULT_IN_NONPAGED_AREA&quot;

936205 Files are corrupted if the computer switches to suspend mode while you synchronize offline files in Windows Vista

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Keywords: kbfix kbqfe kbpubtypekc atdownload kbexpertiseadvanced kbexpertisebeginner kbhotfixserver KB938979

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