This article was previously published under Q193646
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After you install the Internet Information Server (IIS) service and performa system restart, you receive the following error in the System Log of theEvent Viewer:
Event ID: 10005 Source: DCOM DCOM got error. An instance of the service is already running.
This is a nonfatal error warning that the IIS service is already startedbut has not registered a class factory that a Distributed Component ObjectModel (DCOM) client requires.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.