Microsoft KB Archive/289650

= Event ID 4100 appears repeatedly in Event Viewer =

Article ID: 289650

Article Last Modified on 10/30/2006

-

APPLIES TO


 * Microsoft Windows 2000 Professional Edition

-



This article was previously published under Q289650



SYMPTOMS
On a Microsoft Windows 2000 Professional-based computer, the following information about event ID 4100 may appear one to two times a day in Event Viewer:

Event Type: Warning

Event Source: EventSystem

Event Category: Firing Agent

Event ID: 4100

Date:

Time:

User: N/A

Computer:

Description: The COM+ Event System failed to create an instance of the subscriber {6295DF2D-35EE-11D1-8707-00C04FD93327}. CoCreateInstanceEx returned HRESULT 8000401A.



RESOLUTION
To resolve this behavior, use the Regsvr32 tool to unregister the Mobsync.dll file from the server:  Click Start, click Programs, click Accessories, and then click Command Prompt. Type the following line, and then press ENTER:

regsvr32 &quot;%systemroot%\system32\mobsync.dll&quot; /u

 Quit Command Prompt.

After you unregister Mobsync.dll, Client Side Caching (CSC) no longer works. The behavior described in the &quot;Symptoms&quot; section of this article does not affect CSC functionality, but unregistering Mobsync.dll does.



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



MORE INFORMATION
If you upgrade a workstation that is experiencing this problem to Microsoft Windows XP, you see event ID 4356 on that workstation.

For additional information about using Regsvr32, click the following article number to view the article in the Microsoft Knowledge Base:

249873 Explanation of Regsvr32 usage and error messages

Additional query words: offline folders 4365

Keywords: kbprb KB289650

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.