"Errors Occurred While Windows Was Synchronizing Your Data" Error Message Appears When You Try to Synchronizing Offline Files (815045)


The information in this article applies to:

  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Professional MultiLanguage Version
  • Microsoft Windows 2000 Professional SP1
  • Microsoft Windows 2000 Professional SP2
  • Microsoft Windows 2000 Professional SP3
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Server MultiLanguage Version
  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Server SP2
  • Microsoft Windows 2000 Server SP3
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Professional SP1a

SYMPTOMS

After you have worked with Offline Files and have added lots of data or after you have set up a Folder Redirection (for example, a redirected My Documents folder), you may receive the following error message during the subsequent synchronization process:
Window Title: Synchronization Complete
Errors occurred while Windows was synchronizing your data.
The following error message may appear on the Results tab:
Offline Files ('\\server\share' on server):
Unable to connect to '\\server\share.'
The specified network name is no longer available.
The following text may appear on the Progress tab:
\\server\share on server Failed
The Offline File Status window displays the following message:
You are working online on 'server', but changes you made offline have not been synchronized.

CAUSE

This problem may occur if any of the following conditions are true:
  • The server is out of disk space for synchronizing offline files. By default, disk space for automatically cached files is limited to 10 percent of the system disk. If you do not configure the Default cache size policy setting, the default is used.
  • There is a timing issue that occurs when Offline Files components (Cscui.dll, Cscdll.dll) interact with the redirector (Mrxsmb.sys, Rdbss.sys).
  • Server message block (SMB) communication has stopped because of server resource problems.

RESOLUTION

Windows 2000

Service Pack Information

To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

Hotfix Information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. Windows 2000-Based Workstation To resolve this problem on a Windows 2000-based workstation, download and install the Offline Files hotfix that is described in Microsoft Knowledge Base article 328284. For additional information about this hotfix, click the following article number to view the article in the Microsoft Knowledge Base:

328284 Some Files and Folders That Are Not Configured to Be Made Available Offline Are Cached

Windows 2000-Based Server To resolve this problem on a Windows 2000-based server, download and install the MS02-070 security fix. For information about obtaining this fix, click the following article number to view the article in the Microsoft Knowledge Base:

329170 MS02-070: Flaw in SMB Signing May Permit Group Policy to Be Modified

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Windows 2000

This problem was first corrected in Microsoft Windows 2000 Service Pack 4.

MORE INFORMATION

If you have installed the hotfixes that are mentioned in the "Resolution" section yet the issue is not resolved, capture the network traffic between the failing client and the file server that holds the share for offline folders.

Network traces may show that the client stops SMB traffic ungracefully by sending a TCP FIN or a "server not responding to SMB requests in time" message.

If you suspect a server resource problem, restart the server, and then use Performance Monitor to find the root cause of the server resource problem. Typically, such resource problems are caused by kernel mode file system filter drivers that are installed by antivirus software or backup agents.

For additional information and for information about troubleshooting these issues, click the following article numbers to view the articles in the Microsoft Knowledge Base:

822219 File Server Performance Degradation That Is Caused by Filter Drivers

811246 Offline folders unexpectedly come back online after you use the Csccmd.exe command-line tool to disconnect a mapped offline folder

REFERENCES

For additional information about user data management, settings management, and IntelliMirror, visit the following Microsoft Web site:

http://www.microsoft.com/windows2000/docs/settings.doc



For additional information about synchronizing Offline Files, visit the following Microsoft Windows 2000 Resource Kit Web site:

http://www.microsoft.com/windows2000/techinfo/reskit/en-us/default.asp?url=/WINDOWS2000/techinfo/reskit/en-us/deploy/dgpr_gpo_sixb.asp

Modification Type:MajorLast Reviewed:2/8/2006
Keywords:kbprb KB815045
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