The first offline file sync operation fails when you pin an entry and then work offline on a client computer that is running Windows Vista or Windows Server 2008

Consider the following scenario. You have a client computer that is running Windows Vista or Windows Server 2008. You pin an entry on this computer, and then work offline. The pinned entry on the server side is modified. After the client computer works offline, the first offline file sync operation may fail without an error message. In this scenario, the offline file is not filled, and you cannot access the file correctly.

Note The second file sync will succeed.

This problem occurs because, in Windows Vista or Windows Server 2008, the Client-Side Caching (CSC) engine syncs a file in two phases:

• The prepare sync phase
• The actual sync phase

If the information that is collected in the first phase differs from the information that is collected in the second phase, the file sync operations may fail. Therefore, if a file that is ghosted in the prepare sync phase is un-ghosted as part of the actual sync phase, the file information is changed, and the sync fails.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the �Hotfix Request� page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix on a Windows Vista-based computer, you must have Windows Vista Service Pack 1 (SP1) installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base: No prerequisites are required for Windows Server 2008-based computers.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix 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 and Windows Server 2008 file information notes

The MANIFEST (.manifest) files and the MUM (.mum) files that are installed for each environment are listed separately. The MANIFEST and MUM files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, whose attributes are not listed, are signed by using a Microsoft digital signature.

For all supported x86-based versions of Windows Vista and Windows Server 2008

For all supported x64-based versions of Windows Vista and Windows Server 2008

For all supported Itanium-Based versions of Windows Server 2008

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Additional file information for Windows Vista and Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and Windows Server 2008

Additional files for all supported x64-based versions of Windows Vista and Windows Server 2008

Additional files for all supported Itanium-Based versions of Windows Server 2008