Microsoft KB Archive/305831

= &quot;MMC Snap-In Failed to Initialize Disk Management Extension&quot; Error Message Starting Disk Management =

Article ID: 305831

Article Last Modified on 3/2/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q305831



SYMPTOMS
When you try to start the Disk Management utility under Computer Management, you may receive the following error message:

MMC Snap-In Failed to Initialize Disk Management Extension {8EAD3A12-B2C1-11D0-83AA-00A0C92C9D5D}



CAUSE
This behavior can occur if the Dmdskmgr.dll file is corrupted or becomes unregistered.



RESOLUTION
To resolve this behavior, re-register the Dmdskmgr.dll file:  Click Start, click Run, and then type cmd to start a command prompt. At the command prompt, type the following, and then press ENTER:

regsvr32 c:\winnt\system32\dmdskmgr.dll



Keywords: kbenv kberrmsg kbprb KB305831

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